Facilitated water dissociation by coupling bimetallic phosphide with manganese oxide to enhance alkaline hydrogen evolution  

作　　者：Xiaolan Tang Na Yang Zixiao Li Xun He Qiuying Dai Hefeng Wang Yongchao Yao Yujie Yuan Hong Tang Dongdong Zheng Shengjun Sun Asmaa Farouk Mohamed S.Hamdy Xiaobin Niu Tingshuai Li Xuping Sun Bo Tang 

机构地区：[1]School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 611731,China [2]College of Chemistry,Chemical Engineering and Materials Science,Shandong Normal University,Jinan 250014,China [3]Center for High Altitude Medicine,West China Hospital,Sichuan University,Chengdu 610041,China [4]Department of Chemistry,College of Science,King Khalid University,P.O.Box 9004,61413 Abha,Saudi Arabia [5]Laoshan Laboratory,Qingdao 266237,China

出　　处：《Nano Research》2025年第2期184-192,共9页纳米研究(英文版)

基　　金：The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding support through large group research project under grant(No.RGP2/119/45).

摘　　要：Fabricating catalysts with efficient water dissociation and robust stability is key to advancing the industrialization of the alkaline hydrogen evolution reaction(HER).Establishing an effective phosphide/oxide interface is a feasible way to improve the HER performance of the catalyst in an alkaline medium,but it remains challenging.Here,we adopt that manganese oxide nanoparticles decorated on nickel-cobalt phosphide nanowire array on nickel foam(MnO_(x)@NiCoP/NF)via a surface modification strategy that shifts the d-band center downward,promoting the water dissociation and hydrogen intermediate binding.Moreover,MnO_(x) makes the surface of NiCoP rougher,facilitating bubble release and improving the array stability.Consequently,MnO_(x)@NiCoP/NF achieves industrial current densities of 500 and 1000 mA·cm^(-2) with overpotentials of 171 and 193 mV,respectively,while maintaining stable operation for over 600 h at 1000 mA·cm^(-2) in 1 M KOH.Additionally,an anion exchange membrane electrolyzer with the catalyst was fabricated and shows potential for practical applications.

关 键 词：manganese oxide bimetallic phosphides HETEROJUNCTION hydrogen evolution reaction water electrolysis 

分 类 号：O64[理学—物理化学]