高金属-高非金属社区作为高性能电催化剂,用于氧气演变反应和氧气减少反应
Chunyan Zhang1, Hang Li1, Mengfei Su1
1State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 P. R. China qylu@nju.edu.cn.
Chemical science
|November 21, 2024
概括
这项研究引入了一种用于催化的新型高金属非金属材料 (HEM-HENMC). 这种先进的材料在氧气演变和还原反应中表现出卓越的性能,为新的催化应用铺平了道路.
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:
- 高材料 (HEMs) 为先进的催化应用提供了多元素协同作用.
- 开发双重反应的多功能催化剂是一个关键的研究领域.
研究的目的:
- 提出创建一个独特的高金属-高非金属社区 (HEM-HENMC) 的新策略.
- 研究合成的HEM-HENMC的电化学活性,用于氧化演化反应 (OER) 和氧减少反应 (ORR).
主要方法:
- 使用高前体与阿米诺醇作为结合剂来引入Cr,Mn,Fe,Co,Ni,C和N.
- 同时进行化,火山化和表面氧化,以合成HEM-HENMC.
- 通过电化学测试评估了材料作为OER和ORR电催化剂的性能.
主要成果:
- 成功合成了一种独特的HEM-HENMC,含有五种金属 (Cr, Mn, Fe, Co, Ni) 和五种非金属 (C, N, O, P, S).
- 在10 mA cm−2时达到211.9 mV的低OER超电位,具有出色的稳定性 (>25 h).
- 证明了满意的ORR性能,初始电压为0.977V,半波潜力为0.841V,以及出色的稳定性 (>25小时).
结论:
- 在HEM-HENMC中的协同效应赋予了卓越的电化学活性.
- 这项工作为开发用于催化的先进高金属-非金属材料奠定了基础.
- 合成的材料显示出在氧气电催化中应用的巨大潜力.
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