和铁联合化碳化物作为一个稳定的进化电催化剂在苛刻的电解质中
Xiao Peng Fu1, Kai Zhi Sun1, Xiaoxia Li2
1Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.
Chemistry (Weinheim an der Bergstrasse, Germany)
|September 20, 2023
概括
这项研究开发了一种新型的电催化剂 (Ru-Fe/Mo2C@NC),通过水分裂有效生产. 催化剂在酸性和性条件下表现出色的耐用性和性能,与相美.
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
- 可再生能源是可再生能源的来源.
背景情况:
- 电催化水分解对于可持续的生产至关重要,但需要高效和耐用的催化剂.
- 减少气发电的能源消耗是商业可行性的关键挑战.
研究的目的:
- 开发一种用于演化反应 (HER) 的新型高性能电催化剂.
- 研究 (Ru) 和铁 (Fe) 兴奋剂对碳化物 (Mo2C) 的协同效应,由兴奋碳 (NC) 支持.
主要方法:
- 采用可控制的两步合成方法,在添加碳 (Ru-Fe/Mo2C@NC) 上制造Ru和Fe联合合的Mo2C.
- 在酸性和性电解质中评估了电化学性能,包括在各种电流密度和长期稳定性测试中的超电位.
- 催化剂在工业条件下作为阴极在离子交换膜水电解器中进行了测试.
主要成果:
- 在酸性介质中,Ru-Fe/Mo2C@NC在10,100和200 mA cm−2时表现出31,78和103 mV的低超电位,与商业Pt/C相似.
- 催化剂表现出了显著的稳定性,在酸性环境中维持了120多小时,在性环境中维持了100mA cm-2的产量.
- 证实Ru,Fe和Mo2C之间的协同效应可以增强HER活性.
结论:
- 开发的Ru-Fe/Mo2C@NC电催化剂为工业水电解剂提供了一个有前途的低成本,高性能替代品.
- 这项工作提出了一个新的策略,用于设计高效和耐用的电催化剂,用于大规模生产气.
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