文献类型：期刊文献

英文题名：La-doped ruddlesden-popper structured PNO oxides as oxygen electrode for solid oxide fuel cells

作者：Li, Yingyun[1];Li, Ruizhu[2,3];Gao, Na[2];Li, Tao[1];Wang, Jian-Qiang[2,3];Xiao, Guoping[2,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Engn Res Ctr Large Scale Reactor Engn & Technol, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China;[3]Univ Chinese Acad Sci, Beijing 100049, Peoples R China

年份：2026

卷号：329

外文期刊名：MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

收录：;EI(收录号：20261520490114);WOS:【SCI-EXPANDED(收录号:WOS:001745559500001)】；

基金：This work was financially supported by Strategic Priority Research Program of the Chinese Academy of Sciences [XDA 0400000] , the National Key Research and Development Program of China [2024YFF0506300] , National Natural Science Foundation of China [U24A20542, 52302331] , Fundamental Research Program of Industrial Foundation [SINAP-CYJJ-202502] .

语种：英文

外文关键词：Solid oxide fuel cells; Ruddlesden-popper oxide; Oxygen electrodes; Pr1.9La0.1NiO4+delta; La doping

摘要：Sluggish catalytic activity and long-term stability of oxygen electrode materials are the main challenges in the commercialization of solid oxide fuel cells (SOFCs). Herein, a Ruddlesden-Popper-structured Pr2-xLaxNiO4+delta (PLxN) by A-site lanthanum doping are investigated to enhance catalytic activity and stability of oxygen electrodes. Interestingly, the PL0.1N electrode exhibits low polarization resistance of 0.090 Omega cm2 at 800 degrees C, with 18.18% reduction compared to PNO. Furthermore, the Pr1.9La0.1NiO4+delta in anode-supported single cells exhibit peak power density of 1.468 W cm-2 at 800 degrees C and good operational stability over 100 h. Thereinto, La-doping induces lattice expansion and charge redistribution, which enriches surface active sites and accelerates oxygen reduction reaction kinetics. Overall, trace La-doping serving as an A-site defect engineering provides an efficient design strategy for high performance SOFC cathodes.