Tailoring synergetic catalytic interface of VPO/Ni_(2)P to boost hydrogen evolution under alkaline conditions  

作　　者：Wenli Xu Qiqi Li Wenda Zhong Bing Sun Qiang Huang Xu Nan Yinhong Gao Yao Yang Qin Zhang Nianjun Yang Xuanke Li 

机构地区：[1]School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China [2]Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology,Hunan University,Changsha 410082,Hunan,China [3]Institute of Materials Engineering,University of Siegen,Siegen 57076,Germany

出　　处：《Journal of Energy Chemistry》2022年第2期674-680,共7页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51902232)。

摘　　要：Design of the catalyst for efficient water dissociation and hydrogen recombination is paramount in enhancement of the alkaline water electrolysis kinetics.Herein,we reported a delicate hierarchical(VO)_(2) P_(2)O_(7)-Ni_(2) P@NF(VPO-Ni_(2) P@NF)hybrid catalyst that operated efficiently in alkaline media.The VPO and Ni_(2) P respectively act as the water dissociation promoter and the hydrogen recombination center,which synergistically propel water adsorption/dissociation and H intermediates recombination.The resulting synergistic interfaces between VPO and Ni_(2) P are verified to afford the catalyst an outstanding performance for hydrogen evolution reaction in alkaline media with an overpotential of 154 mV at 10 mA cm^(-2),Tafel slope of 65 mV dec^(-1),and remarkable durability.Furthermore,the catalyst presents the potential for overall water splitting.This work may shed fresh light on the high-performance electrocatalyst design and the application of VPO on water electrolysis.

关 键 词：Alkaline water electrolysis Interface engineering (VO)_(2)P_(2)O_(7) Ni_(2)P 

分 类 号：TQ116.2[化学工程—无机化工] TQ426