Wolff-Ragnar Kiebach

Wolff-Ragnar Kiebach

Seniorforsker

DTU ENERGI
Institut for Energikonvertering og -lagring

Danmarks Tekniske Universitet

Frederiksborgvej 399

Bygning 775, rum S17

4000 Roskilde

Hjemmeside

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2019
 

Enhancing the long-term stability of Ag based seals for solid oxide fuel/electrolysis applications by simple interconnect aluminization

Si, Xiaoqing ; Cao, Jian ; Ritucci, Ilaria ; Talic, Belma ; Feng, Jicai ; Kiebach, Wolff-Ragnar
in: International Journal of Hydrogen Energy, vol: 44, issue: 5, pages: 3063-3074

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.1016/j.ijhydene.2018.11.071

 

Enhancing the Robustness of Brittle Solid Oxide Cell Stack Components

Frandsen, H. L. ; Ritucci, I. ; Khajavi, P. ; Talic, B. ; Kiebach, R. ; Hendriksen, P. V.
in: E C S Transactions, vol: 91, issue: 1, pages: 2201-2211

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.1149/09101.2201ecst

 

Gd0.2Ce0.8O1.9/Y0.16Zr0.84O1.92 nanocomposite thin films for low temperature ionic conductivity

Perin, Giovanni ; Gadea, Christophe ; Rosa, Massimo ; Sanna, Simone ; Xu, Yu ; Kiebach, Ragnar ; Glisenti, Antonella ; Esposito, Vincenzo
in: Journal of Physics and Chemistry of Solids, vol: 132, pages: 162-171

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.1016/j.jpcs.2019.04.019

  PDF

Hydrothermal Synthesis, Characterization, and Sintering Behavior of Core-Shell Particles: A Principle Study on Lanthanum Strontium Cobaltite Coated with Nanosized Gadolinium Doped Ceria

Xu, Yu ; Zielke, Philipp ; Van Nong, Ngo ; Pirou, Stéven ; Reolon, Raquel ; Si, Xiaoqing ; Simonsen, Søren Bredmose ; Norby, Poul ; Lühmann, Henning ; Bensch, Wolfgang ; Kiebach, Ragnar
in: Ceramics, vol: 1, issue: 2, pages: 246-260

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.3390/ceramics1020020

 

Impact of cation redox chemistry on continuous hydrothermal synthesis of 2D-Ni(Co/Fe) hydroxides

Rosa, Massimo ; Marani, Debora ; Perin, Giovanni ; Simonsen, Søren Bredmose ; Zielke, Philipp ; Glisenti, Antonella ; Kiebach, Ragnar ; Lesch, Andreas ; Esposito, Vincenzo
in: Reaction Chemistry & Engineering

Type: Journal article (Peer reviewed)

Status: Accepted/In press     |    År: 2019     |    DOI: https://doi.org/10.1039/C9RE00334G

 

Improved Robustness and Low Area Specific Resistance with Novel Contact Layers for the Solid Oxide Cell Air Electrode

Talic, B. ; Ritucci, I. ; Kiebach, R. ; Hendriksen, P. V. ; Frandsen, Henrik Lund
in: E C S Transactions, vol: 91, issue: 1, pages: 2225-2232

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.1149/09101.2225ecs

 

Improving the interface adherence at sealings in solid oxide cell stacks

Ritucci, Ilaria ; Kiebach, Ragnar ; Talic, Belma ; Han, Li ; Zielke, Philippe ; Hendriksen, Peter V. ; Frandsen, Henrik L.
in: Journal of Materials Research, vol: 34, issue: 7, pages: 1167-1178

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.1557/jmr.2018.459

 

Improving the performance of oxygen transport membranes in simulated oxy-fuel power plant conditions by catalytic surface enhancement

Pirou, Stéven ; García-Fayos, Julio ; Balaguer, María ; Kiebach, Ragnar ; Serra, José M.
in: Journal of Membrane Science, vol: 580, pages: 307-315

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.1016/j.memsci.2019.03.027

  PDF

Printing of NiO-YSZ nanocomposites: from continuous synthesis to inkjet deposition

Rosa, Massimo ; Zielke, Philippe ; Kiebach, Ragnar ; Bassetto, Victor Costa ; Lesch, Andreas ; Esposito, Vincenzo
in: Journal of the European Ceramic Society, vol: 39, issue: 4, pages: 1279-1286

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2019     |    DOI: https://doi.org/10.1016/j.jeurceramsoc.2018.12.030

2018
  PDF

A Ba-free sealing glass with a high CTE and excellent interface stability optimized for SOFC/SOEC stack applications

Ritucci, Ilaria ; Agersted, Karsten ; Zielke, Philipp ; Wulff, Anders Christian ; Khajavi, Peyman ; Smeacetto, Federico ; Sabato, Antonio G. ; Kiebach, Ragnar
in: International Journal of Applied Ceramic Technology, vol: 15, issue: 4, pages: 1011-1022

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1111/ijac.12853

 

Continuous Hydrothermal Flow Synthesis of Co1–xNixFe2O4 (x = 0–0.8) Nanoparticles and Their Catalytic Properties for CO Oxidation and Oxygen Evolution Reaction

Xu, Yu ; Özcan, Fatih ; Zielke, Philipp ; Becker, Stefanie ; Heimann, Manuel ; Heese, Justus ; Chakrapani, Kalapu ; Behrens, Malte ; Bredmose Simonsen, Søren ; Norby, Poul ; Vang Hendriksen, Peter ; Kiebach, Ragnar
in: Zeitschrift fuer Anorganische und Allgemeine Chemie, vol: 644, issue: 24, pages: 1727-1733

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1002/zaac.201800307

  PDF

Continuous Hydrothermal Flow Synthesis of Gd-doped CeO2 (GDC) Nanoparticles for Inkjet Printing of SOFC Electrolytes

Xu, Yu ; Farandos, Nicholas M. ; Rosa, Massimo ; Zielke, Philipp ; Esposito, Vincenzo ; Hendriksen, Peter Vang ; Jensen, Søren Højgaard ; Li, Tao ; Kelsall, Geoffrey H. ; Kiebach, Wolff-Ragnar
in: International Journal of Applied Ceramic Technology, vol: 15, issue: 2, pages: 315-327

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1111/ijac.12845

  PDF

Continuous Hydrothermal Flow Synthesis of LaCrO3 in Supercritical Water and Its Application in Dual-Phase Oxygen Transport Membranes

Xu, Yu ; Pirou, Stéven ; Zielke, Philipp ; Simonsen, Søren Bredmose ; Norby, Poul ; Hendriksen, Peter Vang ; Kiebach, Ragnar
in: Industrial and Engineering Chemistry Research, vol: 57, issue: 6, pages: 2123-2130

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1021/acs.iecr.7b04390

 

Effect of spherical porosity on co-fired dense/porous zirconia bi-layers cambering

Teocoli, Francesca ; Marani, Debora ; Kiebach, Wolff-Ragnar ; Esposito, Vincenzo
in: Journal of the European Ceramic Society, vol: 38, issue: 1, pages: 173-179

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1016/j.jeurceramsoc.2017.08.039

  PDF

Exploring the Processing of Tubular Chromite- and Zirconia-Based Oxygen Transport Membranes

Bjørnetun Haugen, Astri ; Martinez Aguilera, Lev ; Kwok, Kawai ; Molla, Tesfaye ; Andersen, Kjeld Bøhm ; Pirou, Stéven ; Kaiser, Andreas ; Hendriksen, Peter Vang ; Kiebach, Ragnar
in: Ceramics, vol: 1, issue: 2, pages: 229-245

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.3390/ceramics1020019

 

Joining of solid oxide fuel/electrolysis cells at low temperature: A novel method to obtain high strength seals already at 300 °C

Si, Xiaoqing ; Cao, Jian ; Kiebach, Ragnar ; Xu, Yu ; Xu, Huixia ; Talic, Belma ; Feng, Jicai
in: Journal of Power Sources, vol: 400, pages: 296-304

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1016/j.jpowsour.2018.08.046

 

Performance and stability of (ZrO2)0.89(Y2O3)0.01(Sc2O3)0.10-LaCr0.85Cu0.10Ni0.05O3-δ oxygen transport membranes under conditions relevant for oxy-fuel combustion

Pirou, Stéven ; Bermudez, Jose M. ; Tak Na, Beom ; Ovtar, Simona ; Yu, Ji Haeng ; Hendriksen, Peter Vang ; Kaiser, Andreas ; Reina, Tomás Ramirez ; Millan, Marcos ; Kiebach, Ragnar
in: Journal of Membrane Science, vol: 552, pages: 115-123

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1016/j.memsci.2018.01.067

  PDF

Zirconia nano-colloids transfer from continuous hydrothermal synthesis to inkjet printing

Rosa, Massimo ; Gooden, P. N. ; Butterworth, S. ; Zielke, Philipp ; Kiebach, Wolff-Ragnar ; Xu, Yu ; Gadea, Christophe ; Esposito, Vincenzo
in: Journal of the European Ceramic Society, vol: 39, issue: 1, pages: 2-8

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2018     |    DOI: https://doi.org/10.1016/j.jeurceramsoc.2017.11.035

2017
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Advanced manufacturing of porous ceramic structures for use in energy applications (invited)

Kaiser, Andreas ; Bjørnetun Haugen, Astri ; Zhang, Wenjing (Angela) ; Ovtar, Simona ; Kiebach, Wolff-Ragnar ; Hendriksen, Peter Vang
part of: Book of abstracts - 15th Conference & Exhibition of the European Ceramic Society (ECerS2017), pages: 11, 2017
Presented at:
ECerS 2017 - 15th Conference & Exhibition of the European Ceramic Society

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    År: 2017

 

A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficient

Kiebach, Wolff-Ragnar ; Agersted, Karsten ; Zielke, Philipp ; Ritucci, Ilaria ; Brock, Mette Bybjerg ; Hendriksen, Peter Vang
in: E C S Transactions, vol: 78, issue: 1, pages: 1739-1747
Presented at:
15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV)

Type: Conference article (Peer reviewed)

Status: Published     |    År: 2017     |    DOI: https://doi.org/10.1149/07801.1739ecst

 

A Novel SOFC/SOEC Sealing Glass with a Low SiO2 Content and a High Thermal Expansion Coefficient  

Kiebach, Wolff-Ragnar ; Agersted, Karsten ; Zielke, Philipp ; Ritucci, Ilaria ; Brock, Mette Bybjerg ; Hendriksen, Peter Vang
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2017-03, pages: 1
Presented at:
15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV)

Type: Conference abstract in journal (Peer reviewed)

Status: Published     |    År: 2017

  PDF

Ceramic processing of tubular, multilayered oxygen transport membranes (Invited)

Bjørnetun Haugen, Astri ; Ovtar, Simona ; Gurauskis, J. ; Kaiser, Andreas ; Kiebach, Wolff-Ragnar ; Hendriksen, Peter Vang
Presented at:
41st International Conference and Expo on Advanced Ceramics and Composites

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    År: 2017

  PDF

Continuous Hydrothermal Flow Synthesis of Functional Oxide Nanomaterials for Energy Conversion Devices

Xu, Yu ; Zielke, Philipp ; Kiebach, Wolff-Ragnar
part of: Book of Abstracts, Sustain 2017, 2017, Technical University of Denmark
Presented at:
Sustain 2017

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    År: 2017

  PDF

Development and Performance of Zirconia Based Oxygen Transport Membranes for Carbon Capture Processes

Pirou, Stéven ; Hendriksen, Peter Vang ; Kaiser, Andreas ; Kiebach, Wolff-Ragnar
part of: Book of Abstracts, Sustain 2017, 2017, Technical University of Denmark
Presented at:
Sustain 2017

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    År: 2017

  PDF

Dual phase composites for tubular oxygen transport membranes

Martinez Aguilera, Lev ; Bjørnetun Haugen, Astri ; Kiebach, Wolff-Ragnar
part of: Book of Abstracts, Sustain 2017, 2017, Technical University of Denmark
Presented at:
Sustain 2017

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    År: 2017

  PDF

Modeling of Ni Diffusion Induced Austenite Formation in Ferritic Stainless Steel Interconnects

Chen, Ming ; Alimadadi, Hossein ; Molin, Sebastian ; Zhang, L. ; Ta, Na ; Hendriksen, Peter Vang ; Kiebach, Wolff-Ragnar ; Du, Y.
in: Journal of The Electrochemical Society, vol: 164, issue: 9, pages: F1005-F1010

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2017     |    DOI: https://doi.org/10.1149/2.1711709jes

 

On the Properties and Long-Term Stability of Infiltrated Lanthanum Cobalt Nickelates (LCN) in Solid Oxide Fuel Cell Cathodes

Kiebach, Wolff-Ragnar ; Zielke, Philipp ; Veltzé, Sune ; Ovtar, Simona ; Xu, Yu ; Simonsen, Søren Bredmose ; Kwok, Kawai ; Frandsen, Henrik Lund ; Küngas, Rainer
in: Journal of the Electrochemical Society, vol: 164, issue: 7, pages: F748-F758

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2017     |    DOI: https://doi.org/10.1149/2.0361707jes

  PDF

Stability and performance of robust dual-phase (ZrO2)0.89(Y2O3)0.01(Sc2O3)0.10-Al0.02Zn0.98O1.01 oxygen transport membranes 

Pirou, Stéven ; Bermudez, Jose M. ; Hendriksen, Peter Vang ; Kaiser, Andreas ; Reina, Tomás Ramirez ; Millan, Marcos ; Kiebach, Wolff-Ragnar
in: Journal of Membrane Science, vol: 543, pages: 18-27

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2017     |    DOI: https://doi.org/10.1016/j.memsci.2017.08.044

2016
 

An Ag based brazing system with a tunable thermal expansion for the use as sealant for solid oxide cells

Kiebach, Wolff-Ragnar ; Engelbrecht, Kurt ; Grahl-Madsen, Laila ; Sieborg, Bertil ; Chen, Ming ; Hjelm, Johan ; Norrman, Kion ; Chatzichristodoulou, Christodoulos ; Hendriksen, Peter Vang
in: Journal of Power Sources, vol: 315, pages: 339-350

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2016     |    DOI: https://doi.org/10.1016/j.jpowsour.2016.03.030

 

Electrochemical Impedance Spectroscopy on Industrially-Relevant Solid Oxide Electrolyzer Cell Stacks: A Powerful Tool for in-Situ Investigations of Degradation Mechanisms

Zielke, Philipp ; Høgh, Jens Valdemar Thorvald ; Chen, Ming ; Kiebach, Wolff-Ragnar ; Küngas, Rainer ; Blennow, Peter ; Hjelm, Johan ; Hendriksen, Peter Vang
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2016-02
Presented at:
PRiME 2016/230th ECS Meeting

Type: Conference abstract in journal (Peer reviewed)

Status: Published     |    År: 2016

 

Infiltration of SOFC Stacks: Evaluation of the Electrochemical Performance Enhancement and the Underlying Changes in the Microstructure

Kiebach, Wolff-Ragnar ; Zielke, Philipp ; Høgh, Jens Valdemar Thorvald ; Thydén, Karl Tor Sune ; Wang, H.-J. ; Barford, R. ; Hendriksen, Peter Vang
in: Fuel Cells, vol: 16, issue: 1, pages: 80-88

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2016     |    DOI: https://doi.org/10.1002/fuce.201500107

 

in-Situ Formed Ce0.8Gd0.2O1.9 Barrier Layer on Yttria Stabilized Zirconia Back-Bone for Infiltrated Oxygen Electrodes

Ovtar, Simona ; Chen, Ming ; Hauch, Anne ; Kiebach, Wolff-Ragnar
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2016-02
Presented at:
PRiME 2016/230th ECS Meeting

Type: Conference abstract in journal (Peer reviewed)

Status: Published     |    År: 2016

 

Joining of ceramic Ba0.5Sr0.5Co0.8Fe0.2O3 membranes for oxygen production to high temperature alloys

Kiebach, Wolff-Ragnar ; Engelbrecht, Kurt ; Kwok, Kawai ; Molin, Sebastian ; Søgaard, Martin ; Niehoff, Patrick ; Schulze-Küppers, Falk ; Kriegel, Ralf ; Kluge, Jens ; Hendriksen, Peter Vang
in: Journal of Membrane Science, vol: 506, pages: 11-21

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2016     |    DOI: https://doi.org/10.1016/j.memsci.2016.01.050

 

Long-Term Stability of Anode-Supported Solid Oxide Fuel Cells with a Co-Sintered Cathode Backbone and Infiltrated La0.95Co0.4Ni0.6O3 (LCN) Electro-Catalyst

Küngas, Rainer ; Veltzé, Sune ; Ovtar, Simona ; Xu, Yu ; Simonsen, Søren Bredmose ; Kwok, Kawai ; Frandsen, Henrik Lund ; Samson, Alfred Junio ; Zielke, Philipp ; Kiebach, Wolff-Ragnar
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2016-02
Presented at:
PRiME 2016/230th ECS Meeting

Type: Conference abstract in journal (Peer reviewed)

Status: Published     |    År: 2016

 

Nanocomposite YSZ-NiO Particles with Tailored Structure Synthesized in a Two-Stage Continuous Hydrothermal Flow Reactor

Zielke, Philipp ; Xu, Yu ; Kiebach, Wolff-Ragnar ; Simonsen, Søren Bredmose ; Norby, Poul ; Hendriksen, Peter Vang
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2016-02
Presented at:
PRiME 2016/230th ECS Meeting

Type: Conference abstract in journal (Peer reviewed)

Status: Published     |    År: 2016

  PDF

Oxygen permeation flux through 10Sc1YSZ-MnCo2O4 asymmetric membranes prepared by two-step sintering

Pirou, Stéven ; Gurauskis, Jonas ; Gil, Vanesa ; Søgaard, Martin ; Hendriksen, Peter Vang ; Kaiser, Andreas ; Ovtar, Simona ; Kiebach, Wolff-Ragnar
in: Fuel Processing Technology, vol: 152, pages: 192-199

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2016     |    DOI: https://doi.org/10.1016/j.fuproc.2016.06.019

 

Poly(vinylpyrrolidone) as dispersing agent for cerium-gadolinium oxide (CGO) suspensions

Marani, Debora ; Sudireddy, Bhaskar Reddy ; Nielsen, Lotte ; Ndoni, Sokol ; Kiebach, Wolff-Ragnar
in: Journal of Materials Science, vol: 51, issue: 2, pages: 1098-1106

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2016     |    DOI: https://doi.org/10.1007/s10853-015-9439-5

  PDF

Processing and characterization of multilayers for energy device fabrication (invited)

Kaiser, Andreas ; Kiebach, Wolff-Ragnar ; Gurauskis, Jonas ; Bjørnetun Haugen, Astri ; Ramousse, Severine ; Hendriksen, Peter Vang
Presented at:
91st DKG Annual Meeting (2016)

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    År: 2016

 

Research and Development on Oxygen Transport Membranes at the Technical University of Denmark from Materials to Modules

Kiebach, Wolff-Ragnar ; Pirou, Stéven ; Ovtar, Simona ; Bjørnetun Haugen, Astri ; Hendriksen, Peter Vang
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2016-02
Presented at:
PRiME 2016/230th ECS Meeting

Type: Conference abstract in journal (Peer reviewed)

Status: Published     |    År: 2016

2015
 

Colloidal stabilization of cerium-gadolinium oxide (CGO) suspensions via rheology

Marani, Debora ; Sudireddy, Bhaskar Reddy ; Bentzen, Janet Jonna ; Jørgensen, Peter Stanley ; Kiebach, Ragnar
in: Journal of the European Ceramic Society, vol: 35, pages: 2823–2832

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2015     |    DOI: https://doi.org/10.1016/j.jeurceramsoc.2015.03.043

 

Influence of hydroxyl content of binders on rheological properties of cerium-gadolinium oxide (CGO) screen printing inks

Marani, Debora ; Gadea, Christophe ; Hjelm, Johan ; Hjalmarsson, Per ; Wandel, Marie ; Kiebach, Wolff-Ragnar
in: Journal of the European Ceramic Society, vol: 35, issue: 5, pages: 1495–1504

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2015     |    DOI: https://doi.org/10.1016/j.jeurceramsoc.2014.11.025

 

Long Term Stability Investigation of Solid Oxide Electrolysis Cell with Infiltrated Porous YSZ Air Electrode Under High Current

Veltzé, Sune ; Ovtar, Simona ; Simonsen, Søren Bredmose ; Thydén, Karl Tor Sune ; Kiebach, Wolff-Ragnar ; Küngas, Rainer
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2015-03, issue: 1

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2015

  PDF

Modeling of Ni Diffusion Induced Austenite Formation in Ferritic Stainless Steel Interconnects

Chen, Ming ; Molin, Sebastian ; Zhang, L. ; Ta, Na ; Hendriksen, Peter Vang ; Kiebach, Wolff-Ragnar ; Du, Y.
in: E C S Transactions, vol: 68, issue: 1, pages: 1691-1700
Presented at:
ECS Conference on Electrochemical Energy Conversion & Storage with SOFC–XIV

Type: Conference article (Peer reviewed)

Status: Published     |    År: 2015     |    DOI: https://doi.org/10.1149/06801.1691ecst

 

Rheological properties of poly (vinylpiyrrolidone) as a function of average molecular weight and its applications

Marani, Debora ; Sudireddy, Bhaskar Reddy ; Kiebach, Ragnar ; Nielsen, Lotte ; Ndoni, Sokol
Presented at:
1st Annual World Congress of Smart Materials 2015

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    År: 2015

 

Stability of La0.6Sr0.4Co0.2Fe0.8O3/Ce0.9Gd0.1O2 cathodes during sintering and solid oxide fuel cell operation

Kiebach, Ragnar ; Zhang, Weiwei ; Zhang, Wei ; Chen, Ming ; Norrman, Kion ; Wang, Hsiang-Jen ; Bowen, Jacob R. ; Barfod, Rasmus ; Hendriksen, Peter Vang
in: Journal of Power Sources, vol: 283, pages: 151-161

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2015     |    DOI: https://doi.org/10.1016/j.jpowsour.2015.02.064

2014
  PDF

Glass Composition for the use as a Sealant

Kiebach, Wolff-Ragnar ; Hendriksen, Peter Vang
Patent no.: WO2014049117, Date: 2014-04-03

Type: Patent

Status: Published     |    År: 2014

  PDF

Influence of Mn-Co Spinel Coating on Oxidation Behavior of Ferritic SS Alloys for SOFC Interconnect Applications

Venkatachalam, Vinothini ; Molin, Sebastian ; Kiebach, Wolff-Ragnar ; Chen, Ming ; Hendriksen, Peter Vang
part of: Proceedings of the Materials Science and Technology 2014 Conference, pages: 1213-1220, 2014, ASM International
Presented at:
Materials Science and Technology 2014 Conference

Type: Article in proceedings (Peer reviewed)

Status: Published     |    År: 2014

  PDF

Rheological properties of poly(vinylpiyrrolidone) as a function of molecular weight

Marani, Debora ; Sudireddy, Bhaskar Reddy ; Kiebach, Wolff-Ragnar ; Nielsen, Lotte ; Ndoni, Sokol
in: Nordic Rheology Society Annual Transactions, vol: 22
Presented at:
23rd Nordic Rheology Conference

Type: Conference article (Peer reviewed)

Status: Published     |    År: 2014

 

Thermodynamic Evaluation of LSCF Cathode Stability and Tolerance towards Gas Impurities

Zhang, Weiwei ; Chen, Ming ; Hendriksen, Peter Vang ; Kiebach, Wolff-Ragnar
part of: Proceedings of 11th European SOFC and SOE Forum 2014, pages: 40-50, 2014, European Fuel Cell Forum
Presented at:
European fuel cell 2014 - 11th European SOFC and SOE Forum 2014

Type: Article in proceedings (Peer reviewed)

Status: Published     |    År: 2014

 

Thermo-mechanical properties of SOFC components investigated by a combined method

Teocoli, Francesca ; Esposito, Vincenzo ; Ramousse, Severine ; Kiebach, Wolff-Ragnar
Presented at:
38th International Conference and Exposition on Advanced Ceramics and Composites

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    År: 2014

2013
 

Towards robust and reliable SOEC cells and stacks: Understanding degradation phenomena occurring under high current densities

Kiebach, Wolff-Ragnar
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2013-01
Presented at:
223rd Electrochemical Society Meeting

Type: Conference abstract in journal (Peer reviewed)

Status: Published     |    År: 2013

2012
 

Determination of redox-active centers in praseodymium doped ceria by in situ-XANES spectroscopy

Kiebach, Wolff-Ragnar ; Chatzichristodoulou, Christodoulos ; Werchmeister, Rebecka Maria Larsen ; Hagen, Anke
in: Chemical Physics Letters, vol: 537, pages: 80-83

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2012     |    DOI: https://doi.org/10.1016/j.cplett.2012.04.009

 

Development of SOEC Cells and Stacks

Kiebach, Wolff-Ragnar ; Chen, Ming ; Nielsen, Jens Ulrik ; Sun, Xiufu ; Norrman, Kion ; Liu, Yi-Lin ; Høgh, Jens Valdemar Thorvald ; Hendriksen, Peter Vang
Presented at:
World Hydrogen Energy Conference 2012

Type: Sound/Visual production (digital)

Status: Published     |    År: 2012

 

Solid oxide cell stack and method for preparing same

Mikkelsen, Lars ; Hendriksen, Peter Vang ; Høgh, Jens Valdemar Thorvald ; Søgaard, Martin ; Kiebach, Wolff-Ragnar
Patent no.: WO2012062341, Date: 2012-05-18

Type: Patent

Status: Published     |    År: 2012

  PDF

Spectroelectrochemical cell for in situ studies of solid oxide fuel cells

Hagen, Anke ; Traulsen, Marie Lund ; Kiebach, Wolff-Ragnar ; Johansen, Bjørn Sejr
in: Journal of Synchrotron Radiation, vol: 19, issue: Pt 3, pages: 400-407

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2012     |    DOI: https://doi.org/10.1107/S0909049512006760

2011
 

High Temperature Electrolysis of 'Steam and CO2 in Solid Oxide Cells

Chen, Ming ; Thydén, Karl Tor Sune ; Kiebach, Wolff-Ragnar ; Høgh, Jens Valdemar Thorvald ; Ebbesen, Sune Dalgaard ; Liu, Yi-Lin ; Bowen, Jacob R. ; Hendriksen, Peter Vang
Presented at:
18th International Conference on Solid State Ionics

Type: Conference abstract for conference (Peer reviewed)

Status: Published     |    År: 2011

2010
 

Investigation of Failure Mechanisms in Ti containing Brazing Alloys used in SOFC/SOEC Environments

Kiebach, Wolff-Ragnar ; Knibbe, Ruth ; Frederiksen, Kristian Bødker ; Chen, Ming ; Mikkelsen, Lars ; Hendriksen, Peter Vang
part of: Proceedings, pages: 655-665, 2011, American Society of Mechanical Engineers
Presented at:
8th International Conference on Fuel Cell Science, Engineering, and Technology

Type: Article in proceedings (Peer reviewed)

Status: Published     |    År: 2010

 

Self Assembly of Silicon Nanoislands on Crystalline Silicon Under a Photoactive Layer

Kiebach, Wolff-Ragnar ; Aceves-Mijares, Mariano ; Yu, Zhenrui ; Monfil, Karim ; Swart, Jacobus Willibrordus ; Dias, G.O.
in: Smart Nanocomposites, vol: 1, issue: 1, pages: 31-39

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2010

 

Synthesis of Light Emitting SiOx Layers With Calculable Optical Properties – A First Step to Controlled Integration of Photoluminescente Active Compounds in Silicon Based Devices

Kiebach, Wolff-Ragnar ; Morales, Alfredo ; Monfil, Karim ; Yu, Zhenrui ; Quiroga, E. ; Aceves-Mijares, M.
in: Smart Nanocomposites, vol: 1, issue: 1, pages: 41-53

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2010

2009
 

ChemInform Abstract: (Fe(C6H14N2)2 (Sb6S10 - Using a Transition Metal Complex Acting as a Pillar for the Generation of a Three-Dimensional Thioantimonate(III) Network.

Kiebach, Wolff-Ragnar ; Warratz, Ralph ; Naether, Christian ; Bensch, Wolfgang
in: ChemInform, vol: 40, issue: 32, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2009

 

[Fe(C6H14N2)2][Sb6S10] – Using a Transition Metal Complex Acting as a Pillar for the Generation of a Three-dimensional Thioantimonate(III) Network

Kiebach, Wolff-Ragnar ; Warratz, Ralph ; Näther, Christian ; Bensch, Wolfgang
in: Zeitschrift fuer Anorganische und Allgemeine Chemie, vol: 635, issue: 6‐7, pages: 988-994

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2009     |    DOI: https://doi.org/10.1002/zaac.200801390

 

Photoluminescence from Si nanocrystals obtained by electrochemical methods embedded in a silicon oxide matrix

Cortazar, O. ; Aceves, M. ; Yu, Z. ; Kiebach, Wolff-Ragnar
part of: Proceedings, pages: 611-615, 2009, IEEE
Presented at:
6th International Conference on Electrical Engineering, Computing Science and Automatic Control

Type: Article in proceedings (Peer reviewed)

Status: Published     |    År: 2009

 

The Deposition and Control of self Assembled Silicon nano Islands on Crystalline Silicon

Kiebach, Wolff-Ragnar ; Yu, Zhenrui ; Aceves-Mijares, Mariano ; Bian, Dongcai ; Du, Jinhui
part of: Frontiers in Electronics, pages: 143-152, 2009, World Scientific

Type: Book chapter (Peer reviewed)

Status: Published     |    År: 2009     |    DOI: https://doi.org/10.1142/9789814273022_0013

2008
 

Characterization of Silicon Rich Oxides with Tunable Optical Band Gap on Sapphire Substrates by Photoluminescence, UV/Vis and Raman Spectroscopy

Kiebach, Wolff-Ragnar ; Alberto Luna-Lopez, Jose ; Dias, Guilherme Osvaldo ; Aceves-Mijares, Mariano ; Swart, Jacobus Willibrordus
in: JOURNAL OF THE MEXICAN CHEMICAL SOCIETY, vol: 52, issue: 3, pages: 212-218

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2008

 

Controlling the Size and Density of Silicon Nanostructures by Incorporation of Nitrogen

Kiebach, Wolff-Ragnar ; Yu, Zhenrui ; Aceves-Mijares, Mariano ; Du, Jinhui ; Bian, Dongcai ; Lopez-Estopier, Rosa ; Carrillo-Lopez, Jesus ; Juarez-Diaz, Gabriel ; Martinez Juarez, Javier
in: CHEMICAL VAPOR DEPOSITION, vol: 14, issue: 11-12, pages: 353-357

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2008     |    DOI: https://doi.org/10.1002/cvde.200806711

 

Hydrothermal Formation of W/Mo-Oxides: A Multidisciplinary Study of Growth and Shape

Kiebach, Wolff-Ragnar ; Pienack, Nicole ; Bensch, Wolfgang ; Grunwaldt, Jan-Dierk ; Michailovski, Alexej ; Baiker, Alfons ; Fox, Thomas ; Zhou, Ying ; Patzke, Greta R.
in: Chem. Mater., vol: 20, pages: 3022-3033

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2008     |    DOI: https://doi.org/10.1021/cm7028036 CCC: $40.75

 

Room temperature current oscillations in naturally grown silicon nanocrystallites embedded in oxide films

Yu, Z. ; Aceves-Mijares, M. ; Monfil, K. ; Kiebach, Wolff-Ragnar ; López-Estopier, R. ; Carrillo, J.
in: Journal of Applied Physics, vol: 103, issue: 6, pages: 063706

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2008     |    DOI: https://doi.org/10.1063/1.2875397

 

Room temperature quantum tunneling and Coulomb blockade in silicon-rich oxide

Yu, Zhenrui ; Aceves, Mariano ; Wang, Fuzhong ; Carrillo, Jesus ; Kiebach, Wolff-Ragnar ; Monfil, Karim
in: Physica E: Low-dimensional Systems and Nanostructures, vol: 41, issue: 2, pages: 264-268

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2008     |    DOI: https://doi.org/10.1016/j.physe.2008.07.022

 

The deposition and control of self assembled silicon nano islands on crystalline silicon

Kiebach, Wolff-Ragnar ; Yu, Zhenrui ; Aceves-Mijares, Mariano ; Bian, Dongcai ; Du, Jinhui
in: International Journal of High Speed Electronics and Systems, vol: 18, issue: 4, pages: 901-910

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2008     |    DOI: https://doi.org/10.1142/S0129156408005862

 

Tuning the Magnetic Properties of LixCrTi0.25Se2 (0.03≤x≤0.7) by Directed Deintercalation of Lithium

Behrens, Malte ; Wontcheu, Joseph ; Kiebach, Wolff-Ragnar ; Bensch, Wolfgang
in: Chemistry - A European journal, vol: 14, issue: 16, pages: 5021-5029

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2008     |    DOI: https://doi.org/10.1002/chem.200701471

2007
 

Morphological and kinetic studies on hexagonal tungstates

Michailovski, Alexej ; Kiebach, Wolff-Ragnar ; Bensch, Wolfgang ; Grunwaldt, Jan-Dierk ; Baiker, Alfons ; Komarneni, Sridhar ; Patzke, Greta R.
in: Chemistry of Materials, vol: 19, issue: 2, pages: 185-197

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2007     |    DOI: https://doi.org/10.1021/cm061020o

 

Morphological and Kinetic Studies on Hexagonal Tungstates.

Michailovski, Alexej ; Kiebach, Wolff-Ragnar ; Bensch, Wolfgang ; Grunwaldt, Jan-Dierk ; Baiker, Alfons ; Komarneni, Sridhar ; Patzke, Greta R
in: ChemInform, vol: 38, issue: 16, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2007

 

Spectroscopical analysis of luminescent silicon rich oxide films

Morales, A. ; Dominguez, C. ; Barreto, J. ; Riera, M ; Aceves, M. ; Luna, J. A. ; Yu, Z. ; Kiebach, Wolff-Ragnar
in: Revista Mexicana de Fisica, vol: 53, issue: 7, pages: 279

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2007

 

Syntheses and X-Ray Diffraction, Photochemical, and Optical Characterization of Cu2SixSn1-xS3 (0.4

Lafond, A ; Cody, J A ; Souilah, M ; Guillot-Deudon, C ; Kiebach, Wolff-Ragnar ; Bensch, W
in: ChemInform, vol: 38, issue: 21, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2007

 

Syntheses and X-ray diffraction, photochemical, and optical characterization of Cu2SixSn1-xS3 (0.4 <or = x <or = 0.6) for photovoltaic applications.

Lafond, A ; Cody, J A ; Souilah, M ; Guillot-Deudon, C ; Kiebach, Wolff-Ragnar ; Bensch, W
in: Inorganic chemistry., vol: 46, issue: 4, pages: 1502-1506

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2007

 

[VIV15SbIII6O42]6−: An antimony analogue of the molecular magnet [V15As6O42(H2O)]6−

Kiebach, Wolff-Ragnar ; Näther, Christian ; Kögerler, Paul ; Bensch, Wolfgang
in: Dalton Transactions, issue: 30, pages: 3221-3223

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2007     |    DOI: https://doi.org/10.1039/b708744f

2006
 

A study of the reactivity of elemental Cr/Se/Te thin multilayers using X-ray reflectometry, in situ X-ray diffraction and X-ray absorption spectroscopy

Behrens, Malte ; Tomforde, Jan ; May, Enno ; Kiebach, Wolff-Ragnar ; Bensch, Wolfgang ; Häußler, Dietrich ; Jäger, Wolfgang
in: Journal of Solid State Chemistry, vol: 179, issue: 11, pages: 3330-3337

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006     |    DOI: https://doi.org/10.1016/j.jssc.2006.06.024

 

[C3H10NO]2[Sb4S7]: Solvothermal syntheses, crystal structures and properties of the first thioantimonates containing aminoalcohols as structure directors

Kiebach, Wolff-Ragnar ; Griebe, Andreas ; Näther, Christian ; Bensch, Wolfgang
in: Solid State Sciences, vol: 8, issue: 5, pages: 541-547

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006     |    DOI: https://doi.org/10.1016/j.solidstatesciences.2005.12.008

 

(C3H10NO 2(Sb4S7 : Solvothermal Syntheses, Crystal Structures and Properties of the First Thioantimonates Containing Aminoalcohols as Structure Directors.

Kiebach, Wolff-Ragnar ; Griebe, Andreas ; Naether, Christian ; Bensch, Wolfgang
in: ChemInform, vol: 37, issue: 27, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006

 

[C6H17N3]4[Sb4V16O42]⋅2H2O and [NH4]4[Sb8V14O42]⋅2H2O— the first isolated Sb derivates of the [V18O42] family

Kiebach, Wolff-Ragnar ; Näther, Christian ; Bensch, Wolfgang
in: Solid State Sciences, vol: 8, issue: 8, pages: 964-970

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006     |    DOI: https://doi.org/10.1016/j.solidstatesciences.2006.02.046

 

(C6H17N3 4 (Sb4V16O42 x2H2O and (NH4 4 (Sb8V14O42 x2H2O - The First Isolated Sb Derivates of the (V18O42 Family.

Kiebach, Wolff-Ragnar ; Naether, Christian ; Bensch, Wolfgang
in: ChemInform, vol: 37, issue: 43, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006

 

[C6H21N4][Sb9S14O]: Solvothermal synthesis, crystal structure and characterization of the first non-centrosymmetric open Sb–S–O framework containing the new [SbS2O] building unit

Kiebach, Wolff-Ragnar ; Näther, Christian ; Peter Sebastian, C. ; Mosel, Bernd D. ; Pöttgen, Rainer ; Bensch, Wolfgang
in: Journal of Solid State Chemistry, vol: 179, issue: 10, pages: 3082-3086

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006     |    DOI: https://doi.org/10.1016/j.jssc.2006.05.041

 

(C6H21N4 (Sb9S14O : Solvothermal Synthesis, Crystal Structure and Characterization of the First Non-Centrosymmetric Open Sb-S-O Framework Containing the New (SbS2O Building Unit.

Kiebach, Wolff-Ragnar ; Naether, Christian ; Sebastian, C Peter ; Mosel, Bernd D ; Poettgen, Rainer ; Bensch, Wolfgang
in: ChemInform, vol: 37, issue: 51, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006

 

Combined in situ EDXRD/EXAFS investigation of the crystal growth of [Co(C6H18N4)][Sb2S4] under solvothermal conditions: Two different reaction pathways leading to the same product

Kiebach, Wolff-Ragnar ; Pienack, Nicole ; Ordolff, Marie-Eve ; Studt, Felix ; Bensch, Wolfgang
in: Chemistry of Materials, vol: 18, issue: 5, pages: 1196-1205

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006     |    DOI: https://doi.org/10.1021/cm051788t

 

Combined in situ EDXRD/EXAFS Investigation of the Crystal Growth of (Co(C6H18N4) (Sb2S4 under Solvothermal Conditions: Two Different Reaction Pathways Leading to the Same Product.

Kiebach, Wolff-Ragnar ; Pienack, Nicole ; Ordolff, Marie-Eve ; Studt, Felix ; Bensch, Wolfgang
in: ChemInform, vol: 37, issue: 21, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006

 

Synthesis of Thin Cr3Se4 Films from Modulated Elemental Reactants via Two Amorphous Intermediates: A Detailed Examination of the Reaction Mechanism

Behrens, M ; Kiebach, Wolff-Ragnar ; Bensch, W ; Haussler, D ; Jager, W
in: Inorganic Chemistry, vol: 45, issue: 6, pages: 2704

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006     |    DOI: https://doi.org/10.1021/ic0515204

 

The Reaction Mechanism of a Complex Intercalation System: In Situ X-ray Diffraction Studies of the Chemical and Electrochemical Lithium Intercalation in Cr4TiSe8

Behrens, Malte ; Kiebach, Wolff-Ragnar ; Ophey, Jannes ; Riemenschneider, Oliver ; Bensch, Wolfgang
in: Chemistry - A European journal, vol: 12, issue: 24, pages: 6348-6355

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006     |    DOI: https://doi.org/10.1002/chem.200501463

 

The Structure Directing Effect of Organic Cations onto the Crystal Structures of Layered Thioantimonates(III): Solvothermal Synthesis and Crystal Structures of Five New Compounds Containing the 2(infinity)(Sb8S13 2- Anion.

Puls, Angela ; Naether, Christian ; Kiebach, Wolff-Ragnar ; Bensch, Wolfgang
in: ChemInform, vol: 37, issue: 49, pages: i

Type: Journal article (Peer reviewed)

Status: Published     |    År: 2006