期刊论文

Bi, Lei

英文

中国科学：材料科学(英文版)

2095-8226

2022

65

3

675-682

10.1007/s40843-021-1821-4

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51972183, 51972128]; Startup Funding for Talents at the University of South China

本校为第一且通讯机构

Sr-doped LaMnO3 (LSM) which is the first-generation cathode for solid oxide fuel cells (SOFCs) has been tailored with Zn ions, aiming to achieve improved protonation ability for proton-conducting SOFCs (H-SOFCs). The new Sr and Zn co-doped LaMnO3 (LSMZ) can be successfully synthesized. The first-principle studies indicate that the LSMZ improves the protonation of LSM and decreases the barriers for oxygen vacancy formation, leading to high performance of the LSMZ cathode-based cells. The proposed LSMZ cell shows the highest fuel cell performance among ever reported LSM-based H-SOFCs. In additio...

Sr掺杂的LaMnO3(LSM)是固体氧化物燃料电池(SOFC)的第一代阴极.为了提高其质子化能力从而应用于质子导体SOFC(H-SOFC),本研究成功合成了Zn和Sr共掺杂的LaMnO3材料(LSMZ),即通过Zn离子调节LSM的性能.第一性原理研究表明,LSMZ提高了材料的质子化能力,而且降低了材料中氧空位的形成能,使LSMZ在电池应用中展现出较高的性能,是文献报道同类阴极在H-SOFC中的最大值.此外,良好的燃料电池性能并没有影响材料的稳定性.原位CO2腐蚀测试和第一性原理计算表明LSMZ材料对于CO2具有高稳定性,使LSMZ电池在工作状态下具有较好的长期稳定性.Zn掺杂策略将传统LSM阴极的高稳定性与高性能相结合,将LSM阴极带回到中温...