在-有机框架纳米阵列中设计内部和外部低协调原子,以促进电化学氧进化反应反应
Shan Wang1, Chong Lin1, Xuetong Zhang1
1Jiangxi Province Key Laboratory of Functional Organic Polymers, School of Chemistry and Materials Science, East China University of Technology, Nanchang, Jiangxi 330013, P. R. China.
Inorganic chemistry
|June 6, 2024
概括
这项研究设计了具有增强低协调原子 (LCAs) 的-有机框架,用于高级氧演化反应 (OER) 催化. 新的纳米结构设计显著提高了电催化活性.
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
- 纳米技术 纳米技术
背景情况:
- 单金属-有机框架 (Ni-NDC) 呈现单原子Ni位点,但缺乏可访问的低协调原子 (LCAs) 以实现最佳氧化演化反应 (OER).
- 暴露或创建内部LCA对于提高Ni-NDC材料的电催化性能至关重要.
研究的目的:
- 设计具有丰富的内部和外部低协调原子 (LCA) 的-有机框架.
- 通过结合LCA暴露策略来协同增强氧进化反应 (OER) 活动.
主要方法:
- 使用氧化纳米阵列作为牺牲模板制备超厚的Ni-NDC纳米阵列 (NA).
- 部分替换双协调的2,6-纳二碳酸 (NDC) 用单协调的2-纳酸 (NA).
- 超薄纳米针阵列 (LCAs-Ni-NDC NAs) 的工程,以最大限度地利用内部和外部LCA.
主要成果:
- 与传统的Ni-NDCNA相比,开发的LCA-Ni-NDCNA具有更高的内部和外部LCA密度.
- 工程纳米结构展示了优越的氧气演化反应 (OER) 性能.
结论:
- 结合策略,在Ni-NDC材料中创建内部和外部LCA,是促进开放式资源活动的有效方法.
- 在LCAs-Ni-NDCNAs代表一个有前途的先进的电催化剂,以高效的氧气进化.
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