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高效率的CO2电解通过NI基SOEC的接口工程复合电解质实现

Rustam Yuldashev^1,2, Hyunchul Jung¹, Ji Hoon Park^1,2

¹CO2 & Energy Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34113, South Korea.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|December 8, 2025

概括

一种新型的复合材料中间层可以防止二氧化碳电解的固体氧化物电解细胞 (SOEC) 中的电解脱层. 这提高了结构稳定性,并实现了高性能和耐用性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
化学工程是化学工程的重要组成部分.

背景情况:

伊特里亚稳定 (YSZ) 和Gd合的 (GDC) 电解质之间的界面不稳定性在高温操作过程中导致固体氧化物电解细胞 (SOEC) 的分层.
这种热变形差异严重降低了SOEC的性能和耐用性,阻碍了CO2电解的商业化.

研究的目的:

通过设计一种新的复合材料中间层来解决SOEC的接口不稳定性问题.
提高SOEC的结构稳定性,性能和耐用性,以实现高效的二氧化碳电解.

主要方法:

复合材料中间层的制造,使用简单的浸涂工艺,用YSZ和GDC粉末的混合物.
将复合材料中间层集成到基于Ni的燃料电极支持的SOEC中.
对界面稳定性,电化学性能和在高温下长期耐用性的评估.

主要成果:

复合材料中间层有效地减轻了热变形差异,确保了优良的结构稳定性,在高温烧结后没有分层.
带有复合材料中间层的电池表现出显著降低的界面电阻,并在800°C时达到2.14 A cm-2的高电流密度.
SOEC表现出很好的长期稳定性,在恶劣条件下连续运行80小时后,它保持了91%的初始性能.

结论:

工程复合材料中间层提供了一个强大的解决方案,以电解质界面不稳定性在SOECs.
这种接口工程策略使得用于二氧化碳电解应用的高性能和耐用SOEC的开发成为可能.

关键词:

电解二氧化碳的电解.YSZ-GDC复合层是一个复合层.消除分层,抑制分层的发生.入涂层是一种入涂层.固体氧化物电解质细胞

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