非贵金属高度合金基催化电极用于长寿命气电池
Shuang Liu1, Ying Wang2, Taoli Jiang1
1Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.
ACS nano
|January 26, 2024
概括
铜泡上的新型非贵金属催化剂有效地驱动电池的进化/氧化反应. 这种低成本的催化剂为大规模储能提供了特殊的稳定性和高能量密度.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 有效的双功能催化剂用于演变/氧化反应 (HER/HOR),对于使用气电池的大规模储能至关重要.
- 与基替代品相比,人们寻求非贵金属催化剂来降低成本.
研究的目的:
- 为- (Ni-H2) 电池开发一种具有成本效益,稳定和高效的双功能催化剂.
- 研究一种在铜泡 (NNM-HEA@CF) 上生长的非贵金属高合金的催化性能和适用性,用于Ni-H2电池.
主要方法:
- 一个自支持的NNM-HEA@CF电极的制造.
- 为 HER/HOR 性能进行催化剂的电化学测试.
- 使用开发的电极组装和测试Ni-H2电池.
- 实验和理论计算以了解催化机制.
主要成果:
- 由于优化了电子结构,NNM-HEA@CF催化剂表现出了出色的HER/HOR活动.
- 组装的Ni-H2电池表现出稳定的循环 (>1800小时) 没有容量衰减在15 mAh cm-2.
- 一个缩放的Ni-H2电池实现了高能量密度 (~109.3Wh kg-1) 和显著降低成本 (~$107.8 kWh-1).
结论:
- 该NNM-HEA@CF催化剂为Ni-H2电池的贵金属催化剂提供了一个可行的,低成本的替代方案.
- 这种方法使得高性能,耐用和经济的能储能解决方案成为可能.
- 该研究为开发用于电网规模能源应用的先进非贵金属催化剂提供了一条途径.
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