仙人掌状的NC/CoxP自支撑电极用于盐水电解实现高效稳定析氢
Cactus-like NC/CoxP electrode enables efficient and stable hydrogen evolution for saline water splitting
摘要
Abstract
Designing efficient and robust catalysts for hydrogen evolution reaction(HER)is imperative for saline water electro-lysis technology.A catalyst composed of CoxP nanowires array with N-doped carbon nanosheets(NC)was fabricated on Ni foam(NF)by an in-situ growth strategy.The material is designated as NC/CoxP@NF.In the preparation process,Co(OH)2 nanowires were transformed into a metal organic framework of cobalt(ZIF-67)on NF by the dissolution-coordination of endogenous Co2+and 2-methylimidazole.The resulting cactus-like microstructure gives NC/CoxP@NF abundant exposed active sites and ion transport channels,which improve the HER catalytic reaction kinetics.Furthermore,the interconnected alternating nanowires and free-stand-ing nanosheets in NC/CoxP@NF improve its structural stability,and the formation of surface polyanions(phosphate)and a NC nanosheet protective layer improve the anti-corrosive properties of catalysts.Thus,the NC/CoxP@NF has an excellent performance,requiring overpotentials of 107 and 133 mV for HER to achieve 10 mA cm-2 in 1.0 mol L-1 KOH and 1.0 mol L-1 KOH+0.5 mol L-1 NaCl,respectively.This in-situ transformation strategy is a new way of constructing highly-efficient HER catalysts for saline water electrolysis.关键词
析氢反应/纳米结构/过渡金属磷化物/耐氯腐蚀/盐水分解Key words
Hydrogen evolution reaction/Nanoarchitecture/Transition metal phosphide/Chlorine-corrosion resistance/Saline wa-ter splitting分类
能源科技引用本文复制引用
陈续,赵金玉,张文盛,王晓敏..仙人掌状的NC/CoxP自支撑电极用于盐水电解实现高效稳定析氢[J].新型炭材料（中英文）,2024,39(1):152-163,12.基金项目
The authors appreciate the support from Nation-al Natural Science Foundation of China(52072256),Key R & D program of Shanxi Province(202102030201006,202202070301016),Central guide local science and technology development funding program(YDZJSX2021B005),Shanxi Province Sci-ence and Technology Program Unveiled Bidding Pro-gram(20201101016),Science and Technology Innov-ation base Construction Project of Shanxi Province(YDZJSX2022B003),Natural Science Foundation of Shanxi Province(20210302124308),Shanxi Province Teaching Reform Project(2021YJJG046). 国家自然科学基金(52072256) （52072256）
山西省重点研发计划(202102030201006,202202070301016) （202102030201006,202202070301016）
中央引导地方科技发展资金项目(YDZJSX2021B005) （YDZJSX2021B005）
山西省科技计划揭榜招标项目(20201101016) （20201101016）
山西省科技创新基地建设项目(YDZJSX2022B003) （YDZJSX2022B003）
山西省自然科学基金项目(20210302124308) （20210302124308）
山西省教学改革项目(2021YJJG046). （2021YJJG046）
