在波动的电源供应下,NiFe基氧化演化电催化剂在AEM水电解仪中的耐用性
Zhihang Wan1, Dongxue Rui1, Lanlan Wu1
1Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
Journal of colloid and interface science
|February 28, 2025
概括
基于NiFe的硫化物催化剂在动离子交换膜水电解器中在功率波动下表现出优越的耐用性. 它们的稳定性与电压波动间隔有关,因粒子崩和气体保留而降解.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
背景情况:
- 基于铁 (NiFe) 的材料是离子交换膜水电解剂 (AEMWE) 中氧化演化反应 (OER) 的关键阳极电催化剂.
- 在波动的电源下了解催化剂性能和降解对于实际的AEMWE应用至关重要.
研究的目的:
- 在恒定和波动电压条件下调查AEMWE中NiFe基催化剂的OER性能和降解机制.
- 为了确定最耐用的基于NiFe的催化剂,并阐明其降解途径.
主要方法:
- 在AEMWE中,在恒定和波动电压下对NiFe基催化剂 (NixFe1−xS,NixFe1−xP,NiFe LDH) 的电化学测试.
- 加速耐久性测试,以评估催化剂的稳定性和降解.
- 对降解机制的分析,包括不可逆转和可逆转的损失.
主要成果:
- 与NixFe1−xP和NiFe LDH相比,NixFe1−xS在恒定和波动电压下表现出优越的耐用性.
- 催化剂的稳定性与电压波动的间隔正相关.
- 归因于粒子崩,溶解和聚合的不可逆性降解;由于气体保留阻碍电解质接触而导致的可逆性降解.
结论:
- 对于AEMWE来说,NixFe1−xS是一个有前途的阳极电催化剂,特别是在动态运行条件下.
- 了解降解机制,包括气体管理和颗粒稳定性,对于改善催化剂寿命至关重要.
- 休息时间可以减轻可逆性性能损失,突出提高耐用性的运营策略.
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