在双金属化物中Ni和Co之间的协同催化效应促进了进化反应的反应
Xiaohan Wang1,2,3, Han Tian1, Libo Zhu1,3
1Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
Nanomaterials (Basel, Switzerland)
|May 24, 2024
概括
一种新的双金属NiCoP-2/NF催化剂在性介质中显示出演化反应 (HER) 的优异性能. 这种催化剂为可再生能源转化和生产提供了稳定高效的途径.
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:
- 电化学演化反应 (HER) 对于零碳能源转化至关重要.
- 金属化物是有前途的HER催化剂,但在性环境中受到H*吸附和溶解的弱影响.
- 开发强大高效的HER催化剂对于实际应用至关重要.
研究的目的:
- 在性条件下开发一种高度活性和稳定的双金属催化剂,用于演化反应 (HER).
- 研究金属化物中和的协同作用,以提高HER的性能.
- 评估催化剂的稳定性及其在性电解器中用于生产的应用.
主要方法:
- 在泡 (NF) 上构建双金属NiCoP-2化物催化剂.
- 电化学表征,包括在各种电流密度下进行超电位测量.
- 保护性无形氧化层的长期稳定性测试和分析.
- 使用开发的催化剂制造和测试性电解剂.
主要成果:
- NiCoP-2/NF催化剂在500和1000 mA cm-2时分别实现了150 mV和169 mV的低超电位.
- 催化剂在100小时内表现出稳定的运行,没有显著的活动衰变.
- 观察到Ni (增强内在活性) 和Co (增加电化学活性区域) 之间的协同效应.
- 使用NiCoP-2/NF作为阴极和阳极催化剂的电解剂显示电耗低.
结论:
- 双金属NiCoP-2/NF催化剂在性介质中提供卓越的HER性能和稳定性.
- 催化剂的设计克服了传统金属化物的局限性,为高效的气生产铺平了道路.
- 这种发展有助于推进可再生能源转换和零碳社会.
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