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Iron-based electrode materials for solid oxide fuel cells and electrolysers

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Ni_2021_EES_Iron_based_electrodes_AAM.pdf (4.037Mb)
Date
01/12/2021
Author
Ni, Chengsheng
Zhou, Jun
Zhang, Ziye
Li, Shuangbin
Ni, Jiupai
Wu, Kai
Irvine, John T. S.
Funder
EPSRC
EPSRC
Grant ID
EP/R023522/1
EP/P024807/1
Keywords
QD Chemistry
AC
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Abstract
A critical new research direction in solid oxide cells (SOCs) is related to balancing power-grid load or integrating heat-electricity-gas interconnection simply by switching operations between the fuel-cell and electrolyser mode. The rational design of robust and high-performance materials for SOCs is urgent for high conversion/energy efficiencies. Iron is highly abundant and offers suitable and flexible redox chemistry for the two operation modes. Iron-based oxide materials are widely investigated for SOCs because of their low cost and, more importantly, the appropriate valence stability of the Fe–O bond for excellent redox activity across a wide range of electrode functions. This review describes the progress in iron-based materials for SOCs, especially the recent applications in electrode materials or catalysts. The stable structure of the ferrite oxides provides an important platform for improved performance via the substitution of Fe in the fuel electrodes of an SOC with H2/H2O or carbonaceous fuel/feedstock. Furthermore, we discuss nano-sized Fe0 metal or alloys on an oxide electrode via infiltration and in situ exsolution aiming to fabricate highly active electrocatalysts. The advances of ferrite oxide-based oxygen electrodes are also discussed in terms of thermal expansion, stability and electrocatalysis before the developments of symmetrical and reversible SOCs based on ferrite oxides are classified and summarized. Therefore, the challenges and future prospects are discussed.
Citation
Ni , C , Zhou , J , Zhang , Z , Li , S , Ni , J , Wu , K & Irvine , J T S 2021 , ' Iron-based electrode materials for solid oxide fuel cells and electrolysers ' , Energy & Environmental Science , vol. 14 , no. 12 , pp. 6287-6319 . https://doi.org/10.1039/d1ee01420j
Publication
Energy & Environmental Science
Status
Peer reviewed
DOI
https://doi.org/10.1039/d1ee01420j
ISSN
1754-5692
Type
Journal item
Rights
Copyright © 2021 The Author(s). This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1039/D1EE01420J
Description
We would like to acknowledge the support from the National Natural Science Foundation of China (NSFC, 51702264, 41371275, 51877173, 51737011), the Fundamental Research Funds for the Central Universities (XDJK2020B066; SWURC2020002) and EPSRC (EP/R023522/1, EP/P024807/1). We also thank the funding from Chongqing Committee of S&T (grant No. cstc2021ycjhbgzxm0162). C. N. also acknowledges the support from Bayu Scholar for Young Teachers.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/26339

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