Offsetting the thermal expansion mismatch:a new way to high-performance solid oxide fuel cell cathodes

• 作者: Lin Zhuang
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: HIGHLIGHTS
• 页码范围: 877-878
• 页数: 2页
• 语种: 英文

摘要

On the cutting-edge of developing high-performance solid oxide fuel cells (SOFC),high activity and durability cath-odes are required [1,2].However,the thermo-mechanical mismatch between SOFC cathode and electrolyte is the most hindering disadvantage of traditional highly active cathode materials (cobalt-containing perovskites) which usually yield higher thermal-expansion coefficient (TEC) than electrolytes [3].Such inherently different thermal expansion behavior will lead to internal high stress at the interface between electrolytes and cathodes,and therefore cause de-lamination,which is the main mode of SOFC failures.