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Updated: Jan 15, 2026

Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems

Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems

Published on: May 26, 2019

热膨胀匹配作为在SOFC中开发高性能Mn-based Mullite阴极的关键标准.

Yuanchen Duan¹, Huan Li¹, Shiqing Li²

¹College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300350, China.

Advanced materials (Deerfield Beach, Fla.)

|October 7, 2025

概括

为固体氧化物燃料电池 (SOFCs) 开发了一种新的SmMn2O5 (SMO) 阴极材料. 这种材料,当与GDC复合时,显示出出色的热膨胀匹配和高电化学性能,确保结构稳定性.

关键词:

在SOFC电极中,电极是SOFC电极.在 TEC 匹配中,可以找到 TEC 匹配.密度函数理论 (DFT) 是一种密度函数理论.它们是多种多样性的.

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Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems

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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
固氧化物燃料电池固氧化物燃料电池

背景情况:

热膨胀不匹配是固体氧化物燃料电池 (SOFC) 阴极设计中的一个关键问题,导致分层和裂纹.
开发具有结构完整性和高催化活性的正极材料对于SOFC的性能和寿命至关重要.

研究的目的:

设计和开发一种新的基于Mn的多类型阴极材料,SmMn2O5 (SMO),用于SOFCs.
研究基于SMO的复合电极与GDC的结构性质关系,以改善热膨胀匹配和电化学性能.
通过优先考虑热膨胀系数 (TEC) 匹配,为SOFC阴极开发提供一个新的战略.

主要方法:

SmMn2O5 (SMO) 和SMO-GDC复合电极的制造.
测量热膨胀系数 (TEC) 和电化学性能.
在现场进行X射线衍射 (XRD),拉曼光谱和密度函数理论 (DFT) 分析以了解结构-属性关系.

主要成果:

SMO的TEC值很低 (8.12 × 10^-6 K^-1),这归因于异性质晶格膨胀和声子散射.
SMO-GDC组合显示出与YSZ的优异TEC匹配,只有2.36%的偏差.
复合阴极实现功率密度为580.9 mW cm^-2,极化电阻为0.193 Ω cm^2,并保持了300小时的稳定性.

结论:

开发的SMO-GDC复合阴极为SOFC应用提供了卓越的结构稳定性和高电化学活性.
优先考虑TEC匹配作为主要设计原则,对于开发先进的SOFC阴极材料是有效的.
这项工作为下一代SOFCs的材料选择策略提供了宝贵的见解.