塔菲尔方程
过电位
材料科学
卤素
解吸
无机化学
吸附
磷化氢
离解(化学)
磷化物
钌
电解质
物理化学
化学工程
电化学
化学
催化作用
有机化学
金属
电极
工程类
冶金
烷基
作者
Zexing Wu,Qichang Li,Guangrui Xu,Wei Jin,Weiping Xiao,Zhenjiang Li,Tianyi Ma,Shouhua Feng,Lei Wang
标识
DOI:10.1002/adma.202311018
摘要
Abstract Anionic modification engineering is a crucial approach to develop highly efficient electrocatalysts for hydrogen evolution reaction. Herein, halogen elements (X = Cl, Br, and I)‐modified Ru‐based nanosheets (X‐Ru/RuP 2 ) are designed by rapid and eco‐friendly microwave‐phosphide plasma approach within 60 s. Experimental and density functional theory calculations verify that the introduced halogen element, especially Br, can optimize the surface intermediates adsorption. Specially, the designed Br‐Ru/RuP 2 favors the water dissociation and following hydrogen adsorption/desorption process. Then, the as‐synthesized Br‐Ru/RuP 2 exhibits low overpotential of 34 mV to reach 10 mA cm −2 coupled with small Tafel slope of 27 mV dec −1 in alkaline electrolyte with excellent long‐term stability. Moreover, the electrocatalytic performances in acid and neutral media are also boosted via Br element modification. This work paves a novel way to regulate the electronic structure of Ru‐based compounds, and then can boost the electrocatalytic kinetics.
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