Highly Efficient A- and B-Site-Doped Ruddlesden-Popper Perovskite Oxide Nd2-x Sr x Ni0.9Cu0.1O4+δ as a Cathode for PCFCs

被引：9

作者：

Wang, Wan-Ting ^{[1
]}

Wu, Yuan-Ting ^{[1
]}

Lin, Xing-Liang ^{[2
]}

Babar, Zaheer Ud Din ^{[2
]}

Li, Cheng-Xin ^{[2
]}

Liu, Chang-Qing ^{[2
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Shaanxi Key Lab Green Preparat & Functionalizat, Shaanxi Key Lab Green Preparat & Functionalizat In, Xian 710021, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China

来源：

ACS APPLIED ENERGY MATERIALS | 2024年 / 7卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Nd2-x Sr x Ni0.9Cu0.1O4+delta; Ruddlesden-Popper; oxygen reduction reaction; proton conductor; PCFC; STRUCTURAL PHASE-DIAGRAM; TRANSPORT-PROPERTIES; HIGH-PERFORMANCE; ELECTROCHEMICAL PERFORMANCE; FUEL-CELLS; OXYGEN; ND; PR; DELTA; LN=LA;

D O I：

10.1021/acsaem.3c02923

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

At medium and low operating temperatures, the slow reaction kinetics of the cathode is a significant limiting factor hindering proton ceramic fuel cell (PCFC) development. This work reports a Nd2-xSrxNi0.9Cu0.1O4+delta (x = 0, 0.2, 0.4, 0.6, 0.8, 1) Ruddlesden-Popper cathode through a combination strategy of A-site Sr2+ and B-site Cu2+ codoping. Appropriate Sr2+ doping has achieved the synergistic optimization of conductivity and electrocatalytic activity by modulating the amount of surface oxygen defects and the valence state of B-site Ni2+. Nd1.4Sr0.6Ni0.9Cu0.1O4+delta (NSNC6) exhibits a remarkably improved conductivity (exceeding 100 S cm(-1) from 450 to 750 degrees C) and an enhanced electrocatalytic activity. The PCFC with the NSNC6-BZCNY triple-conducting cathode exhibits sufficient long-term stability and a maximum power density of 445 mW cm(-2) at 650 degrees C, which is approximately 50% higher than that of the PCFC with the NSNC6 cathode, highlighting its potential as a cathode material for PCFCs.

引用

页码：2197 / 2209

页数：13

共 66 条

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