TY - JOUR
T1 - In Situ Exsolved CoFeRu Alloy Decorated Perovskite as An Anode Catalyst Layer for High-Performance Direct-Ammonia Protonic Ceramic Fuel Cells
AU - Liang, Mingzhuang
AU - Song, Yufei
AU - Xiong, Baocheng
AU - Liu, Dongliang
AU - Xue, Daxiang
AU - Shen, Longyun
AU - Shi, Kanghua
AU - Song, Yixiao
AU - Li, Jingwei
AU - Niu, Qiang
AU - Xu, Meigui
AU - Ciucci, Francesco
AU - Zhou, Wei
AU - Shao, Zongping
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024/11/26
Y1 - 2024/11/26
N2 - Direct-ammonia proton ceramic fuel cell (DA-PCFC) is a promising clean energy technology because ammonia (NH3) is easier to store, transport, and handle than hydrogen. However, NH3 decomposition efficiency is unsatisfactory, and the anti-sintering resistance of conventional Ni-based ceramic anodes has limited the large-scale application of DA-PCFC technology. Herein, Pr0.6Sr0.4(Co0.2Fe0.8)0.85Ru0.15O3-δ (PSCFR15), a novel anode catalyst layer (ACL) material is developed. PSCFR15 is treated under a reducing atmosphere to form a composite with CoFeRu alloy nanoparticles. Density functional theory simulations reveal that Ru modification in the CoFe alloy promotes nitrogen desorption during ammonia decomposition reaction, thereby boosting ammonia decomposition efficiency. As a result, DA-PCFC with PSCFR15 ACL can achieve superior peak power density compared to bare DA-PCFC operated with H2 and NH3 fuels. Furthermore, the ACL also reduces the direct contact between the Ni-based ceramic anode and the NH3 fuel, then suppressing Ni sintering, and enhancing the durability of the DA-PCFC.
AB - Direct-ammonia proton ceramic fuel cell (DA-PCFC) is a promising clean energy technology because ammonia (NH3) is easier to store, transport, and handle than hydrogen. However, NH3 decomposition efficiency is unsatisfactory, and the anti-sintering resistance of conventional Ni-based ceramic anodes has limited the large-scale application of DA-PCFC technology. Herein, Pr0.6Sr0.4(Co0.2Fe0.8)0.85Ru0.15O3-δ (PSCFR15), a novel anode catalyst layer (ACL) material is developed. PSCFR15 is treated under a reducing atmosphere to form a composite with CoFeRu alloy nanoparticles. Density functional theory simulations reveal that Ru modification in the CoFe alloy promotes nitrogen desorption during ammonia decomposition reaction, thereby boosting ammonia decomposition efficiency. As a result, DA-PCFC with PSCFR15 ACL can achieve superior peak power density compared to bare DA-PCFC operated with H2 and NH3 fuels. Furthermore, the ACL also reduces the direct contact between the Ni-based ceramic anode and the NH3 fuel, then suppressing Ni sintering, and enhancing the durability of the DA-PCFC.
KW - Direct-ammonia proton ceramic fuel cell
KW - alloy catalysts
KW - ammonia decomposition
KW - anode catalyst layer
KW - perovskite
UR - http://www.scopus.com/inward/record.url?scp=85198630684&partnerID=8YFLogxK
U2 - 10.1002/adfm.202408756
DO - 10.1002/adfm.202408756
M3 - 文章
AN - SCOPUS:85198630684
SN - 1616-301X
VL - 34
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 48
M1 - 2408756
ER -
