改进了基于Ni的纳米多孔催化剂的进化性能,并与Mo和B一起添加
Chongxing Pang1, Wence Xu1, Yanqin Liang2
1School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China.
Journal of colloid and interface science
|November 23, 2023
概括
这项研究引入了一种新的纳米孔-- (NiMoB) 催化剂,用于高效和稳定的演化反应 (HER). 这种非贵金属催化剂对电化学生产有很大的前景.
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:
- 开发高效,稳定的无贵金属电催化剂对于推进电化学生产至关重要.
- 演化反应 (HER) 是产生清洁燃料的关键过程.
研究的目的:
- 报告一种新型的纳米的Ni基催化剂与Mo和B联合添加 (NiMoB) 进行高效的HER.
- 研究NiMoB在性电解质中的催化性能和稳定性.
- 通过使用DFT计算,阐明 HER活动增强背后的机制.
主要方法:
- 通过脱合成纳米孔的NiMoB催化剂的合成.
- HER性能的电化学表征,包括超电位测量.
- 评估性介质中的催化稳定性.
- 密度函数理论 (DFT) 计算用于研究电子结构和中间吸附.
主要成果:
- 纳米孔的NiMoB催化剂在10 mA cm-2.2时达到31 mV的低超电位.
- 在性电解质中观察到异常的催化稳定性.
- DFT的计算证实了电子结构的协同优化和HER中间体被Mo和B调节的吸附.
结论:
- NiMoB是一种高效,稳定的无贵金属电催化剂.
- 和B的共同添加通过优化Ni活性位点来增强HER动力学.
- 这项工作为开发用于能能量转换的非贵金属Ni基催化剂提供了新的策略.
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