Phosphating-induced charge transfer on CoO/CoP interface for alkaline H_(2)evolution  

作　　者：Qian Li Yuchao Wang Jian Zeng Qiumei Wu Qichen Wang Lian Sun Liang Xu Tong Ye Xin Zhao Lei Chen Zhiyan Chen Limiao Chen Yongpeng Lei 

机构地区：[1]State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China [2]School of Material Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China [3]Energy Materials Computing Center,Jiangxi University of Science and Technology,Nanchang 330013,China [4]Hunan Provincial Key Laboratory of Chemical Power Sources,College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China [5]School of Material and Chemical Engineering,Xi'an Technological University,Xi'an 710021,China

出　　处：《Chinese Chemical Letters》2021年第11期3355-3358,共4页中国化学快报（英文版）

基　　金：the financial support from the Hunan Provincial Science and Technology Plan Project(Nos.2017TP1001,2020JJ4710);National Natural Science Foundation of China(No.11764018);the Natural Science Foundation of Jiangxi Province(No.20202ACBL211004);Changsha Science and Technology Plan(No.kq1801079);National Natural Science Foundation of China(No.21776317).

摘　　要：Designing non-noble metal electrocatalysts toward alkaline hydrogen evolution reaction(HER)with high performance at a large current density is urgent.Herein,a CoO/CoP heterostructure catalyst(termed POZ)was designed by a phosphating strategy.The strong electron transfer on the interface of CoO/CoP was experimentally and theoretically proven.POZ showed a low overpotential of 236 mV at 400 mA/cm^(2),which was 249 mV lower than non-phosphated sample.It also exhibited a remarkable solar-to-hydrogen conversion efficiency of 10.5%.In this work,the construction of CoO/CoP interface realized by a simple phosphating strategy could provide an important reference to boost the HER performance on those materials not merely metal oxides.

关 键 词：CoO/CoP heterostructure PHOSPHATING H_(2)evolution reaction Alkaline media Solar-driven water splitting 

分 类 号：TQ116.2[化学工程—无机化工] TQ426