- Title
- Composite cathode based on doped vanadate enhanced with loaded metal nanoparticles for steam electrolysis
- Creator
- Li, Yuanxin; Wu, Guojian; Ruan, Cong; Zhou, Qi; Wang, Yan; Doherty, Winston; Xie, Kui; Wu, Yucheng
- Date
- 2014
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/162741
- Identifier
- vital:12723
- Identifier
-
https://doi.org/10.1016/j.jpowsour.2013.12.046
- Identifier
- ISBN:0378-7753
- Abstract
- The use of composite electrodes based on La0.7Sr 0.3VO3 (LSV) for steam electrolysis has uncovered the tremendous potential and capacity inherent in this material. Unfortunately, this material has a major setback of inefficient electrolysis triggered by limited electrocatalytic activity. In this work, an infiltration method is employed to load catalytic-active metal nanoparticles onto the composite electrodes in order to achieve an activity-enhanced electrode performance. The electrical properties of LSV are methodically explored and correlated to electrode performance. At 800 C in either pure H2 or low hydrogen partial pressure (pH2) of 5%H2/N2, the polarization resistance of symmetrical cells with Ni-loaded LSV (LSV-Ni) cathode is largely enhanced, in contrast to bare LSV cathode. Similar improvement is also achieved for the Fe-loaded LSV (LSV-Fe) cathode in a wide range of hydrogen partial pressures of 5%-100%. The Faraday efficiencies of LSV-Ni and LSV-Fe composite cathodes were remarkably improved for electrolysis in either 3%H 2O/4.7H2/Ar or 3%H2O/Ar at 800 C. © 2013 Elsevier B.V. All rights reserved.
- Publisher
- Elservier B.V.
- Relation
- Journal of Power Sources Vol. 253, no. (2014), p. 349-359
- Rights
- Copyright © 2013 Elsevier B.V. All rights reserved.
- Rights
- This metadata is freely available under a CCO license
- Subject
- 03 Chemical Sciences; 09 Engineering; Metal nanoparticles; Solid oxide electrolyser; Steam electrolysis; Vanadate
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