无机材料学报2024，Vol.39Issue(4)：374-382,中插3-中插6,13.DOI:10.15541/jim20230432
镍铁氢氧化物-磷化钴复合电极电催化分解水研究
Electrocatalytic Water Splitting over Nickel Iron Hydroxide-cobalt Phosphide Composite Electrode
摘要
Abstract
NiFeOH/CoP/NF composite electrode was fabricated by constructing a metal hydroxide layer on the surface of cobalt phosphide via hydrothermal,phosphating,and electrodeposition methods.The electrolytic water splitting to hydrogen performance by as-prepared electrode was investigated in 1.0 mol/L KOH medium.NiFeOH/CoP/NF composite electrode exhibited excellent water electrolysis performance,and the required overpotentials for HER and OER at 100 mA/cm2 current density were 141 and 372 mV,respectively.When NiFeOH/CoP/NF electrode served as both cathode and anode for water splitting,only 1.61 V voltage was required to reach current density of 10 mA/cm2.Because NiFeOH protection layer enhanced the electrocatalytic activity and stability of CoP for water splitting,NiFeOH/CoP/NF composite electrode exhibited high stability during the galvanostatic electrolysis in the HER and OER,and its activity could maintain 60000 s without significant performance degradation.The photovoltaic-electrolytic water cell constructed with two NiFeOH/CoP/NF electrodes and GaAs solar cell showed 18.0%efficiency of solar to hydrogen under 100 mW/cm2 simulated solar irradiation and worked stably for 200 h.关键词
磷化钴/金属氢氧化物保护层/电催化水分解/稳定性Key words
cobalt phosphide/metal hydroxide protection layer/electrocatalytic water splitting/stability分类
化学化工引用本文复制引用
杨博,吕功煊,马建泰..镍铁氢氧化物-磷化钴复合电极电催化分解水研究[J].无机材料学报,2024,39(4):374-382,中插3-中插6,13.基金项目
国家重点研发计划(2022YFB3803600) （2022YFB3803600）
国家自然科学基金(22272189,22102200)National Key R&D Program of China(2022YFB3803600) （22272189,22102200）
National Natural Science Foundation of China(22272189,22102200) （22272189,22102200）
