Interfacial electron rearrangement: Ni activated Ni(OH)_(2) for efficient hydrogen evolution

作     者：Wenda Zhong Wenlong Li Chenfan Yang Jing Wu Rong Zhao Memona Idrees Hui Xiang Qin Zhang Xuanke Li Wenda Zhong;Wenlong Li;Chenfan Yang;Jing Wu;Rong Zhao;Memona Idrees;Hui Xiang;Qin Zhang;Xuanke Li

作者机构：Hunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyCollege of Materials Science and EngineeringHunan UniversityChangsha 410082HunanChina Hubei Province Key Laboratory of Coal Conversion and New Carbon MaterialsSchool of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan 430081HubeiChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第10期

页      面：236-242,I0007页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081702[工学-化学工艺] 0808[工学-电气工程] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.U1864207 and 51902232) 

主　　题：Electron rearrangement Hydrogen evolution Ni(OH)_(2) Ni Heterojunction 

摘      要：The rational modulation of electronic structure is highly desirable to develop an efficient alkaline hydrogen evolution reaction(HER)catalyst for renewable energy *** hydroxide such as Ni(OH)_(2) has been proven useful for promoting alkaline HER,but the performance remains ***,the electronic structure of Ni(OH)_(2) is modulated by the interfacial electron rearrangement between Ni-Ni(OH)_(2) *** experiments with DFT simulations,the electrons of Ni species accumulate to the interfacial Ni-Ni(OH)_(2) sites,which modifies the d band center for promoting conversion of hydrogen intermediates and narrows the energy gap for boosting charge transfer in the HER ***,the integrated electrode exhibits an efficient HER performance to drive10 mA cm^(-2) at the overpotential of 72 mV with a low Tafel slope of 43 mV dec^(-1).Our work renders a valuable insight for understanding and rationally designing efficient catalysts in alkaline HER.