Three-dimensional structured of V-doped CoP in situ grown on MXene as highly efficient bifunctional electrocatalyst for water splitting  

作　　者：Hong Wang Huimin Jiang Yongqi Niu Nasir A.Siddiqui Aslam Khan Lu Pan Jianjian Lin 

机构地区：[1]College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [3]Department of Pharmacognosy,College of Pharmacy,King Saud University,Riyadh 11451,Saudi Arabia [4]King Abdullah Institute for Nanotechnology,King Saud University,Riyadh 11451,Saudi Arabia

出　　处：《Nano Research》2025年第3期123-131,共9页纳米研究(英文版)

基　　金：Shandong Province Key Research and Development Plan(Major Scientific and Technological Innovation Project)(No.2023CXGC010303);Postdoctoral Fellowship Program(Grade C)of China Postdoctoral Science Foundation(Nos.GZC20231195 and GZC20240772);Qingdao Postdoctoral Funding Project(No.QDBSH20240102087);Qingdao Natural Science Foundation project(Nos.24-4-4-zrjj-19-jch and 24-4-4-zrjj-82-jch);Innovation and Entrepreneurship Training Program for College Students(No.S202410426042);Authors from the KSU thank the Researchers Supporting Project(No.RSPD2025R981),King Saud University,Riyadh,Saudi Arabia for the support.

摘　　要：A challenging but very important task is the development of efficient and cost effective non-noble metal based bifunctional electrocatalysts with excellent kinetics for overall water splitting.Improving the catalyst’s electronic structure,optimizing intermediate adsorption,and enhancing charge transfer kinetics are crucial for enhancing reaction efficiency.In this study,we prepared three-dimensional structured V-doped CoP grown in situ on MXene by one-step hydrothermal and controlled phosphorylation(defined as V-CoP/MXene@NF).The V doping not only optimises the electronic conductivity,but also creates a strong synergistic effect between the MXene and V-CoP components,enriching the active sites of the catalysts.The V-CoP/MXene@NF electrocatalyst can achieve a current density of 10 mA·cm^(−2)in 1.0 M KOH solution,with overpotentials of 78 and 223 mV for the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER),respectively.For overall water splitting,we used the catalyst as an anode and cathode assembly in an electrolytic cell,which could drive a current density of 10 mA·cm^(−2)with an overpotential of only 1.56 V and excellent durability.This work provides new ideas for designing novel MXene-based non-noble metal bifunctional electrocatalysts.

关 键 词：MXene in situ growth bifunctional electrocatalysis overall water splitting 

分 类 号：O64[理学—物理化学]