塔菲尔方程
过电位
催化作用
析氧
超分子化学
分解水
氧气
化学
吸附
材料科学
纳米技术
光化学
化学工程
结晶学
电化学
物理化学
电极
晶体结构
有机化学
光催化
工程类
作者
Shuai Cao,Wenzhuo Wu,Chaozhong Liu,Leqian Song,Qun Xu,Huacheng Zhang,Yanli Zhao
出处
期刊:Energy & environmental materials
日期:2024-01-22
摘要
The development of active water oxidation catalysts for water splitting has stimulated considerable interest. Herein, the design and building of single atom Co sites using a supramolecular tailoring strategy are reported, that is, the introduction of pillar[4]arene[1]quinone (P4A1Q) permits mononuclear Co species stereoelectronically assembled on MoS 2 matrix to construct an atomically dispersed MoS 2 @Co catalyst with modulated local electronic structure, definite chemical environment and enhanced oxygen evolution reaction performance. Theoretical calculations indicate that immsobilized single‐Co sites exhibit an optimized adsorption capability of oxygen‐containing intermediates, endowing the catalyst an excellent electrocatalytic oxygen evolution reaction activity, with a low overpotential of 370 mV at 10 mA cm −2 and a small Tafel slope of 90 mV dec −1 . The extendable potential of this strategy to other electrocatalysts such as MoS 2 @Ni and MoS 2 @Zn, and other applications such as the hydrogen evolution reaction was also demonstrated. This study affords new insights into the rational design of single metal atom systems with enhanced electrocatalytic performance.
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