NiCoP/NiOOH nanoflowers loaded on ultrahigh porosity Co foam for hydrogen evolution reaction under large current density

作     者：Yuantao Pei Liang Huang Lei Han Haijun Zhang Longhao Dong Quanli Jia Shaowei Zhang Yuantao Pei;Liang Huang;Lei Han;Haijun Zhang;Longhao Dong;Quanli Jia;Shaowei Zhang

作者机构：The State Key Laboratory of Refractories and MetallurgyWuhan University of Science and TechnologyWuhan430081China Henan Key Laboratory of High Temperature Functional CeramicsZhengzhou UniversityZhengzhou450052China College of EngineeringMathematics and Physical SciencesUniversity of ExeterExeterEX44QFUnited Kingdom 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2022年第7卷第3期

页      面：467-476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] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(No 51702241,51672194,and 51872210) Program for Innovative Teams of Outstanding Young and Middle-aged Researchers in the Higher Education Institutions of Hubei Province(No.T201602) Key Program of Natural Science Foundation of Hubei Province,China(No.2017CFA004) the Special Project of Central Government for Local Science and Technology Development of Hubei Province(No.2019ZYYD076) 

主　　题：porosity loaded attributed 

摘      要：Developing user-friendly electrodes for efficiently producing hydrogen from water to substitute non-renewable fossil fuels is one of the challenges in the hydrogen energy *** the first time,we have prepared self-supporting ultrahigh porosity cobalt foam loaded with NiCoP/NiOOH nanoflowers(NiCoP/CF)via freeze-drying and *** as-prepared hierarchical NiCoP/CF electrodes showed superior catalytic activity for hydrogen evolution reaction(HER)in alkaline *** one resulted from phosphorization at 350℃(NiCoP/CF-350)only required overpotential of-47,and-126 mV to deliver geometrical current density of-10 mA cm^(-2) and-100 mA cm^(-2),respectively,demonstrating improved catalytic activity than the electrodes prepared using a commercial nickel foam as a ***,it could retain its superior stability at a current density higher than-500 mA cm^(-2) for 16 *** an outstanding performance can be attributed to the ultrahigh porosity of Co foam support,optimal adsorption energies of HER intermediates(H^(*)),facile water dissociation on the NiCoP/NiOOH heterointerfaces,and the assistance of NiOOH facilitating the electrons transfer from the Co foam inside to the NiCoP *** work would provide a new strategy for future design of advanced HER electrocatalysts.