选择性现场相分离 实现高效和稳定的质子陶燃料电池阴极性能
Desheng Feng1, Vanessa K Peterson2, Tianjiu Zhu1
1School of Chemical Engineering, The University of Queensland, Brisbane, 4072, Australia.
Small (Weinheim an der Bergstrasse, Germany)
|June 9, 2025
概括
开发用于质子陶燃料电池 (PCFC) 的新阴极材料至关重要. 这项研究通过控制离子分离,设计了一种PCFC阴极,通过控制离子分离,提高了CO2耐受性和性能.
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
- 能源转换 能源转换
背景情况:
- 质子陶燃料电池 (PCFC) 需要有效的氧降解反应 (ORR) 的活跃和耐用的阴极材料.
- 具有混合导电性的矿氧化物是有希望的,但由于性土元素,在CO2环境中降解.
研究的目的:
- 开发一种新的方法来提高PCFC阴极性能和二氧化碳阻力.
- 通过在位相分离,单独设计阴极表面和散体特性.
主要方法:
- 在模型 BaCo0.4Fe0.4Zr0.1Y0.1O3-δ 阴极中同时纳入 Li+ 和 K+.
- 向控制阴离子大小不匹配,以诱导选择性 in situ 阶段分离.
- 评估重组的正极的性能和在600°C的二氧化碳耐受性.
主要成果:
- +分离到表面,提供CO2阻力,而K+留在散体中,增强质子传输.
- 在现场重组的阴极显示PCFC输出功率增加了30%.
- 在600°C的CO2存在下,CO2耐受性提高了五倍.
结论:
- 在现场选择性相隔离是设计先进PCFC阴极材料的有效策略.
- 设计的阴极为克服二氧化碳降解问题提供了一条途径,提高了PCFC的耐用性和效率.
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