对于高效的酸辅助水分和-酸电池,化的异原子诱导加速动力学是非常有效的
Hao-Yu Wang1, Lei Wang1, Jin-Tao Ren1
1School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin, 300350, People's Republic of China.
Nano-micro letters
|June 19, 2023
概括
超薄P/Fe配合合的NiSe2纳米片可以促进水辅助的水电解,以有效生产气. 这种双功能电催化剂加速了演化反应 (HER) 和氧化反应 (HzOR) 动力学.
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:
- 素辅助水电解为高效气生产提供了一个有前途的途径.
- 开发双功能电催化剂对于同时增强演变反应 (HER) 和氧化反应 (HzOR) 动力学至关重要.
研究的目的:
- 开发和研究Ni泡上的超薄P/Fe联合合的NiSe2纳米片作为双功能电催化剂.
- 阐明反应机制和P兴奋剂在优化HzOR动力学中的作用.
主要方法:
- 易于用于催化剂合成的电解和热处理.
- 电化学测量 (例如电流密度,电位) 用于性能评估.
- 描述技术和密度函数理论 (DFT) 计算以了解机制.
主要成果:
- P/Fe-NiSe2催化剂表现出极好的电催化活性.
- 在HER -168 mV和HzOR -200 mV的低超电位下,达到100 mA cm-2的高电流密度.
- 证实了一种2"+2"反应机制,包括HER和HzOR的两步过程.
结论:
- P/Fe-NiSe2催化剂在水辅助水电解方面表现出卓越的性能.
- 催化剂显示出在能源转换和-酸电池中的实际应用潜力.
- 兴奋剂显著提高HzOR动力学,有助于整体效率.
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