纳米结构化作为进化反应的电催化剂
Eric J Popczun1, James R McKone, Carlos G Read
1Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.
Journal of the American Chemical Society
|June 15, 2013
概括
化 (Ni2P) 纳米粒子在酸性溶液中表现出极好的活性和稳定性,用于演化反应 (HER). 这些非贵金属催化剂为通过电解高效生产气提供了一个有希望的替代方案.
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:
- 质子交换膜 (PEM) 电解需要高效的电催化剂来进行进化反应 (HER).
- 非贵金属催化剂被寻求作为 HER 贵金属的经济有效替代品.
- 化 (Ni2P) 具有 HER 催化理论潜力.
研究的目的:
- 调查酸 (Ni2P) 纳米颗粒的电催化活性和稳定性,用于HER.
- 评估Ni2P作为一种非贵金属催化剂,用于在酸性介质中生产.
主要方法:
- Ni2P纳米粒子的合成和表征.
- 在酸性溶液中对Ni2P纳米粒子进行HER的电化学测试.
- 评估催化活性和稳定性.
主要成果:
- 合成了空洞和分层的Ni2P纳米粒子,暴露了活性Ni2P的表面.
- Ni2P纳米粒子表现出高的HER活性,与非贵金属基准可比.
- 获得了H2 (g) 生产的定量法拉第克产量.
- 在水性酸性介质中表现出极好的稳定性.
结论:
- 在酸性介质中,Ni2P纳米粒子是HER的高度活性和稳定的电催化剂.
- 暴露的Ni2P(001) 表面对催化性能有很大的贡献.
- 在PEM电解中,Ni2P提供了一个可行的非贵金属替代品,用于在PEM电解中高效的进化.
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