A new cathode for solid oxide fuel cells capable of in situ electrochemical regeneration
Article
Article Title | A new cathode for solid oxide fuel cells capable of in situ electrochemical regeneration |
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Article Category | Article |
Authors | Zhou, Wei (Author), Shao, Zongping (Author), Liang, Fengli (Author), Chen, Zhi-Gang (Author), Zhu, Zhonghua (Author), Jin, Wanqin (Author) and Xu, Nanping (Author) |
Journal Title | Journal of Materials Chemistry |
Journal Citation | 21 (39), pp. 15343-15351 |
Number of Pages | 9 |
Year | 2011 |
Publisher | The Royal Society of Chemistry |
Place of Publication | United Kingdom |
ISSN | 0959-9428 |
1364-5501 | |
Digital Object Identifier (DOI) | https://doi.org/10.1039/c1jm12660a |
Web Address (URL) | http://pubs.rsc.org/en/Content/ArticleLanding/2011/JM/c1jm12660a#!divAbstract |
Abstract | As highly efficient energy conversion devices with the capability for power/heat co-generation and fuel flexibility, solid-oxide fuel cells (SOFCs) have received considerable attention recently as a keystone of the future energy economy. Nowadays, lack of a proper cathode with high performance at intermediate temperature (IT) has become the main obstacle in realizing this fascinating technology. Here we present (La0.8Sr0.2) 0.95Ag0.05MnO3-δ as a novel CO 2 tolerant cathode of IT-SOFCs, which shows silver intercalation/de-intercalation capability. Under cathodic polarization, silver can be extracted from perovskite lattice to form a 5-15 nm silver modified A-site cation deficient (La0.8Sr0.2) 0.95MnO3-δ electrode with superior electrocatalytic activity and improved stability. Any performance degradation due to silver sintering can be easily in situ restored by re-intercalating silver into the perovskite lattice under anodic polarization. Through electrochemically adjusting the oxidation state and location of silver, we introduce a way for the development of high-performance silver-modified cathode for IT-SOFCs, which may contribute significantly to a sustainable future. |
Keywords | a-site cations; co-generation; electrocatalytic activity; electrochemical regeneration; energy conversion devices; energy economy; fuel flexibility; in-situ; intermediate temperatures; IT-SOFCs; oxidation state; performance degradation; perovskite lattice; inorganic compounds; chemical products generally; electrochemistry; physical chemistry; electric components; fuel cells; electric batteries; precious metals; powder metallurgy operations; energy conversion; fuel combustion and flame research |
ANZSRC Field of Research 2020 | 340604. Electrochemistry |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing Tech University, China |
Nanjing University of Technology, China | |
University of Queensland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4192/a-new-cathode-for-solid-oxide-fuel-cells-capable-of-in-situ-electrochemical-regeneration
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