Theoretical and experimental design of Pt-Co（OH）2 electrocatalyst for efficient HER performance in alkaline solution

作     者：Haijun Wu Xiaoqing Zuo Shanpeng Wang Jun-Wen Yin Yan-Ning Zhang Jialin Chen 

作者机构：School of Materials Science and EngineeringKunming University of Science and Technology State Key Laboratory of New Technologies for Comprehensive Utilization of Rare and Precious Metals Beijing Computational Science Research Center Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2019年第29卷第3期

页      面：356-361页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the Science Challenge Project (TZ2018004) the National Natural Science Foundation of China (grant no. 51861130360, 51572016 and U1530401) Newton Advanced Fellowships under the grant No. NAF\R1\180242 

主　　题：OH Theoretical and experimental design of Pt-Co HER electrocatalyst for efficient HER performance in alkaline solution 

摘      要：Design efficient electrocatalysts become significant for the hydrogen evolution reaction （HER） in alkaline ***,the HER performance on Pt-Co（OH）2 has been investigated by using DFT *** with pure Pt,the Pt-Co（OH）2 shows excellent hydrogen binding energy （-0.29 eV） and hydrogen adsorption free energy （0.02 eV）.More strikingly,the water dissociation process on Pt-Co（OH）2 is an exothermic reaction while that of Pt is an endothermic reaction,demonstrating that the Pt-Co（OH）2is an excellent catalyst for HER in alkaline *** the two-step electrodepositions was used to fabricate Pt-Co（OH）2 on the carbon paper （CP）.The Pt-Co（OH）2/CP shows the lowest overpotential of only 37.6 mV at a current density of 10 mA cm-2in 0.1M KOH,the smallest Tafel slope of58 mV dec-1and the good stability for 20000s without obvious degradation.