单原子催化剂:开启了一个革命性的异构电催化时代
1Electric Mobility and Tribology Research Group, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
单原子催化剂 (SAC) 由于其独特的原子结构,在能量转化中提供了更高的性能. 本综述探讨了过渡金属SACs的微环境工程策略,以改善电催化反应.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
背景情况:
- 不同质的催化对于全球能源转化至关重要,消耗了全球25%的能源.
- 单原子催化剂 (SAC) 是一个显著的进步,提供原子分散,定制的电子结构和精确的几何配置,以实现卓越的性能.
- 碳矩阵支持的单个原子允许通过调节它们的协调环境来调整可调节的催化行为.
研究的目的:
- 批判性地检查基于过渡金属的SAC的最新趋势,以提高电催化性能.
- 专注于关键的电化学过程,包括进化反应 (HER),氧进化反应 (OER),氧减少反应 (ORR),CO2减少反应 (CO2RR) 和减少反应 (NRR).
- 为了突出挑战,提出设计原则,并讨论电催化中稳定和有效的SAC的未来方向.
主要方法:
- 对SACs微环境工程策略的最新文献的审查.
- 分析诸如多异构原子兴奋剂,在不同的协调中引入异构原子,轴联体协调和双金属位点构造等策略.
- 专注于各种电催化反应的过渡金属SAC中的结构-活性关系.
主要成果:
- 由于其独特的原子特性,SAC在与能源相关的应用中表现出色.
- 微环境工程策略,包括异原子兴奋剂和协调控制,对于调整催化行为至关重要.
- 在理解和优化HER,OER,ORR,CO2RR和NRR的SAC方面取得了重大进展.
结论:
- 确定单个原子的精确电子和几何结构以及它们的结构-活动关系仍然是一个关键的挑战.
- 对微环境工程的持续研究对于开发稳定和高效的SAC至关重要.
- 未来的方向包括建立电催化中先进SAC的一般设计原则.
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