Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 46, Issue 55, Pages 28258-28269Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.06.049
Keywords
SOFC/SOEC; LSCF; Calcium cobaltite; Microstructure; Electrochemical properties; Gerischer
Categories
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) [001]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq/Brazil) [200439/2019-7, 482473/2010-0, 446126/2014-4, 308548/2014-0, 307236/2018-8, 431428/2018-2, 309430/2019-4]
- FEDER, Centro Portugal Regional Operational Programme (Centro2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund (ERDF) [PTDC/CTM-CTM/2156/2020, POCI-010145-FEDER-032241, UID/EMS/00481/2019-FCT, CENTRO-010145-FEDER-022083]
- FCT/MCTES
Ask authors/readers for more resources
The composite electrode of misfit calcium cobaltite [Ca2CoO3-delta](0.62)[CoO2] (C349) and Ce0.8Pr0.2O2-delta (CPO) shows high levels of electrochemical performance comparable to the standard La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF), providing insight into critical optimization factors for similar SOC electrodes with low ionic transport.
Calcium cobaltites have emerged as an attractive alternative to be used in Solid Oxide Cells (SOCs), due to their excellent thermal compatibility with standard electrolytes that may privilege these compounds among state-of-the-art SOC electrodes. Nonetheless, their electrochemical performances have been strongly limited by poor oxygen ion transport. Hence, we report a new composite electrode containing the misfit calcium cobaltite [Ca2CoO3-delta](0.62)[CoO2] (C349) phase combined with Ce0.8Pr0.2O2-delta (CPO). A comparative study is presented between this composite and the standard La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF), in terms of their microstructures, number of depositions, and resultant electrochemical properties. Such tailoring permits the best C349/CPO composite electrode to attain high levels of electrochemical performance that rival with the standard LSCF material. This successful result is highly relevant, as it can provide insight into the most critical optimisation factors for similar SOC electrodes that intrinsically suffer from similarly low levels of ionic transport. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available