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高性能可逆质子陶电池空气电极的工程协同氧 - 质子性能

Na Yu¹, Xi Chen¹, Tong Liu^1,2

¹Department of Building and Real Estate The Hong Kong Polytechnic University Hung Hom, Kowloon, Hong Kong P. R. China.

|October 8, 2025

概括

在可逆质子陶电池 (RePCC) 中平衡质子和氧气运输是可持续能源的关键. 用Nb合的Sr3Fe2O7-δ电极实现了这种平衡,提高了RePCC的性能和稳定性.

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
可再生能源可再生能源是可再生能源.

背景情况:

可逆质子陶电池 (RePCC) 对于整合可再生能源至关重要.
RePCC的性能严重依赖于空气电极运输质子,氧气和电子的能力.
在空气电极中存在一个基本的权衡,其中氧气交换需要空位,但水化消耗它们.

研究的目的:

研究材料设计对RePCC空气电极中氧气和质子运输的影响.
为了证明平衡氧气和质子运输特性对于高性能RePCCs的重要性.
探索Nb在Sr3Fe2O7-δ中的兴奋剂作为优化空气电极功能的策略.

主要方法:

使用 (Nb) 添加的Sr3Fe2O7-δ (SF) 矿系统.
研究了Nb兴奋剂对氧空位度和水分水平的影响.
分析了得到的Sr3Fe1.9Nb0.1O7-δ (SFNb0.1) 电极的传输特性和晶体结构稳定性.

主要成果:

过度水分在未使用过的SF中限制了氧离子运输和电催化活性.
在SFNb0.1中Nb注维持了氧空位度,同时抑制了过度水合.
SFNb0.1电极显示出平衡的质子和氧气运输,增强的活性和改善的结构稳定性.

结论:

平衡的氧-质子传输是高性能RePCC空气电极的关键设计原则.
在Sr3Fe2O7-δ中进行Nb注,通过管理水化和氧气空缺,有效地优化空气电极性能.
这项研究为开发更高效,更稳定的RePCC用于可持续能源应用提供了一条途径.

关键词:

拉德尔斯登波普尔的佩罗夫斯基特.空气电极是空气电极.平衡的氧 - 质子特性.可逆的质子陶细胞.三重导体的三重导体是什么

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