电催化剂
双功能
兴奋剂
电解
电解质
分解水
材料科学
电子结构
电解水
纳米技术
化学
无机化学
催化作用
光电子学
电化学
计算化学
物理化学
电极
光催化
生物化学
作者
Ling Jiang,Mingzheng Gu,Hao Wang,Xiaomin Huang,Gaoyun An,Ping Sun,Xudong Liu,Xiaojun Zhang
出处
期刊:Chemsuschem
[Wiley]
日期:2023-07-26
卷期号:16 (18)
被引量:4
标识
DOI:10.1002/cssc.202300592
摘要
Precisely regulating the electronic construction of the reactive center is an essential method to improve the electrocatalysis, but achieving efficient multifunctional characteristics remains a challenge. Herein, CoS sample dual-doped by Cu and F atoms, as bifunctional electrocatalyst, is designed and synthesized for water electrolysis. According to the experimental results, Cu atom doping can perform primary electronic adjustment and obtain bifunctional properties, and then the electronic structure is adjusted for the second time to achieve an optimal state by introducing F atom. Meanwhile, this dual-doping strategy will result in lattice distortion and expose more active sites. As expected, dual-doped Cu-F-CoS show the brilliant electrocatalytic activity, revealing ultralow overpotentials (59 mV for HER, 213 mV for OER) at 10 mA cm-2 in alkaline electrolyte. Besides, it also exhibits distinguished water electrolysis activity with cell voltage as low as 1.52 V at 10 mA cm-2 . Our work can provide an atomic-level perception for adjusting the electronic construction of reactive sites by means of dual-doping engineering and put forward a contributing path for the electrocatalysts with multifunctional designing.
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