无机材料学报2023，Vol.38Issue(6)：693-700,8.DOI:10.15541/jim20220551
中温固体氧化物燃料电池的高熵双钙钛矿阴极材料:兼容性与活性研究
Enhanced Compatibility and Activity of High-entropy Double Perovskite Cathode Material for IT-SOFC
摘要
Abstract
Intermediate-temperature solid oxide fuel cell(IT-SOFC)is promising for carbon neutrality,but its cathode is limited by the contradiction between thermal compatibility and catalytic activity.Herein,we propose a high-entropy double perovskite cathode material,GdBa(Fe0.2Mn0.2Co0.2Ni0.2Cu0.2)2O5+δ(HE-GBO)with improved compatibility and activity,in view of the high-entropy strategy by multi-elemental coupling,which possesses double perovskite structure and excellent chemical compatibility with state-of-the-art Gd0.1Ce0.9O2-δ(GDC).The polarization resistance(Rp)of the symmetrical cells with HE-GBO cathode is 1.68 ?·cm2 at 800℃,and the corresponding Rp of HE-GBO-GDC(mass ratio 7:3)composite cathode can be greatly reduced(0.23 ?·cm2 at 800℃)by introducing GDC.Dendritic microchannels anode-supported single cells with HE-GBO and HE-GBO-GDC cathodes realize maximum power densities of 972.12 and 1057.06 mW/cm2 at 800℃,respectively,indicating that cell performance can be enhanced by high-entropy cathodes.The results demonstrate that high-entropy double perovskite cathode material HE-GBO has a high potantial to solve the conflict problem of thermal compatibility and catalytic activity in IT-SOFCs.关键词
高熵阴极/固体氧化物燃料电池/热相容性/树枝状微通道Key words
high-entropy cathode/solid oxide fuel cells/thermal compatibility/dendritic microchannels分类
化学化工引用本文复制引用
郭天民,董江波,陈正鹏,饶睦敏,李明飞,李田,凌意瀚..中温固体氧化物燃料电池的高熵双钙钛矿阴极材料:兼容性与活性研究[J].无机材料学报,2023,38(6):693-700,8.基金项目
National Key R&D Program of China(2021YFB4001502) （2021YFB4001502）
National Natural Science Foundation of China(52272257,52104229) （52272257,52104229）
