氧还原反应
催化作用
对偶(语法数字)
氧还原
还原(数学)
氧气
电子结构
双重角色
化学
材料科学
化学工程
光化学
纳米技术
组合化学
计算化学
物理化学
电化学
有机化学
电极
工程类
艺术
几何学
文学类
数学
作者
Wei-Shen Song,Mei Wang,Xiao Zhan,Yanjie Wang,Dongxu Cao,Xianmeng Song,Zi‐Ang Nan,Li Zhang,Feng Ru Fan
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2023-01-01
卷期号:14 (12): 3277-3285
被引量:3
摘要
Atomically dispersed catalysts, with a high atomic dispersion of active sites, are efficient electrocatalysts. However, their unique catalytic sites make it challenging to improve their catalytic activity further. In this study, an atomically dispersed Fe-Pt dual-site catalyst (FePtNC) has been designed as a high-activity catalyst by modulating the electronic structure between adjacent metal sites. The FePtNC catalyst showed significantly better catalytic activity than the corresponding single-atom catalysts and metal-alloy nanocatalysts, with a half-wave potential of 0.90 V for the oxygen reduction reaction. Moreover, metal-air battery systems fabricated with the FePtNC catalyst showed peak power density values of 90.33 mW cm-2 (Al-air) and 191.83 mW cm-2 (Zn-air). By combining experiments and theoretical simulations, we demonstrate that the enhanced catalytic activity of the FePtNC catalyst can be attributed to the electronic modulation effect between adjacent metal sites. Thus, this study presents an efficient strategy for the rational design and optimization of atomically dispersed catalysts.
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