在广泛的pH范围内,N,P,S联合注的空心碳支持的CuFe双金属电催化剂用于氧气减少
Xiaogeng Feng1, Xiaotong Jing1, Yanou Qi1
1College of Chemistry, Liaoning University, Shenyang, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|January 27, 2026
概括
一种新型的铜铁催化剂 (CuFe/NPS-C) 在所有pH水平上显示出高氧减氧反应 (ORR) 的活性. 这种多功能电催化剂增强了空气电池,显示出更好的性能和耐用性.
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
- 催化剂是一种催化剂.
背景情况:
- 开发用于氧降解反应 (ORR) 的电催化剂,在广泛的pH范围内具有高活性,对于能量转换和储存设备至关重要.
- 现有的催化剂在中性或酸性条件下经常面临性能限制,这阻碍了它们的广泛应用.
研究的目的:
- 设计和合成一种新的,高度活跃的ORR电催化剂,在所有pH条件下有效运行.
- 研究双金属组合和异质原子兴奋剂对ORR动力学和催化剂稳定性的协同效应.
- 评估空气电池 (ZAB) 中开发的催化剂的性能.
主要方法:
- 利用Kirkendall效应合成N,P,S联合合的空心碳支持CuFe双金属催化剂 (CuFe/NPS-C).
- 进行了电化学测试,以评估ORR活性,动力学和各种pH介质中的性能.
- 组装中性和性空气电池 (ZAB),以评估催化剂的实际应用和耐用性.
主要成果:
- 在所有pH值中,CuFe/NPS-C催化剂表现出优越的ORR活性,在中性条件下,半波电位 (E1/2) 为0.790V,性能优于商业Pt/C.
- 组装的ZAB显示了高开放电路电压 (1.40V中性,1.50V性) 和峰值功率密度 (38.9mW cm-2中性,125.9mW cm-2性).
- 基于CuFe/NPS-C的ZAB实现了120小时的出色的充放电耐用性.
结论:
- 在CuFe双金属和N,P,S异构原子兴奋剂之间的协同作用,结合空洞多孔结构,显著提高ORR性能.
- 铁/NPS-C是多功能应用的有希望的电催化剂,特别是在高效和耐用的空气电池中,在广泛的pH范围内运行.
- 这项工作为设计用于电化学能源技术的先进联合化双金属催化剂提供了宝贵的见解.
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