Defect Engineering and Carbon Supporting to Achieve Ni‑Doped CoP_(3) with High Catalytic Activities for Overall Water Splitting  

作　　者：Daowei Zha Ruoxing Wang Shijun Tian Zhong‑Jie Jiang Zejun Xu Chu Qin Xiaoning Tian Zhongqing Jiang 

机构地区：[1]Department of Physics,Zhejiang Sci-Tech University,Hangzhou 310018,People’s Republic of China [2]Department of Materials and Chemical Engineering,Ningbo University of Technology,Ningbo 315211,People’s Republic of China [3]Guangzhou Key Laboratory for Surface Chemistry of Energy Materials,Guangdong Engineering and Technology Research Center for Surface Chemistry of Energy Materials,College of Environment and Energy,South China University of Technology,Guangzhou 510006,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第11期569-584,共16页纳微快报（英文版）

基　　金：supports from the Zhejiang Provincial Natural Science Foundation(No.LR22E070001);the National Natural Science Foundation of China(Nos.12275239 and 11975205);the Guangdong Basic and Applied Basic Research Foundation(No.2020B1515120048);the Fundamental Research Funds of Zhejiang Sci-Tech University(No.23062096-Y).

摘　　要：This work reports the use of defect engineering and carbon supporting to achieve metal-doped phosphides with high activities and stabilities for the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)in alkaline media.Specifically,the nitrogen-doped carbon nanofiber-supported Ni-doped CoP_(3) with rich P defects(Pv·)on the carbon cloth(p-NiCoP/NCFs@CC)is synthesized through a plasma-assisted phosphorization method.The p-NiCoP/NCFs@CC is an efficient and stable catalyst for the HER and the OER.It only needs overpotentials of 107 and 306 mV to drive 100 mA cm^(-2) for the HER and the OER,respectively.Its catalytic activities are higher than those of other catalysts reported recently.The high activities of the p-NiCoP/NCFs@CC mainly arise from its peculiar structural features.The density functional theory calculation indicates that the Pv·richness,the Ni doping,and the carbon supporting can optimize the adsorption of the H atoms at the catalyst surface and promote the strong electronic couplings between the carbon nanofiber-supported p-NiCoP with the surface oxide layer formed during the OER process.This gives the p-NiCoP/NCFs@CC with the high activities for the HER and the OER.When used in alkaline water electrolyzers,the p-NiCoP/NCFs@CC shows the superior activity and excellent stability for overall water splitting.

关 键 词：PLASMA ELECTROCATALYSIS Hydrogen evolution reaction Oxygen evolution reaction Water splitting 

分 类 号：TQ116.2[化学工程—无机化工] O643.36[理学—物理化学]