Preparation of heterogeneous NiCo2S4/Ru composite electrode materials and their electrocatalytic properties for hydrogen evolution

doi:10.1039/d2nj01576e

	Preparation of heterogeneous NiCo2S4/Ru composite electrode materials and their electrocatalytic properties for hydrogen evolution
	Li, XinBao 1; Fu, Han 1; Zhou, Qi 1,2
	2022-06-06
发表期刊	NEW JOURNAL OF CHEMISTRY
ISSN	1144-0546
卷号	46 期号:22 页码:10920-10926
摘要	In order to increase the effective electrochemically active area of electrocatalyst materials and improve their electrocatalytic hydrogen evolution performance, nano-porous Ni-Co alloys were prepared by rapid solidification and dealloying methods. After that, bimetallic sulfides (NiCo2S4) were formed in situ by vapor deposition, then Ru and RuS2 which have excellent intrinsic catalytic activity were adhered to the NiCo2S4 surface by a solvothermal method. Meanwhile, the Ru content was regulated to prepare the NiCo2S4/Ru electrode which was used to figure out the best component and structure for hydrogen evolution. Research shows that when the Ru content reaches 60% (wt/%), the Ru element formed a three-dimensional network flake structure and covered the NiCo2S4 surface. The active area for the reaction (C-dl = 27.6 mF cm(-2)) and electron transfer ability (R-ct = 0.487 omega cm(-2)) were increased because of the formation of the heterostructure and surface modification. At a current density of 50 mA cm(-2), the NiCo2S4/Ru (60%) composite electrode possessed fast HER kinetics with a hydrogen evolution overpotential of 70 mV and a Tafel slope of 76 mV dec(-1), whose electrocatalytic properties are much better than those of NiCo2S4/RuS2 with the same Ru content. The NiCo2S4/Ru (60%) catalyst exhibited superior stability with a small increase in overpotential of just 10 mV after chronopotentiometry tests for 12 h at 10 mA cm(-2).
关键词	Binary alloysCatalyst activityCobalt alloysDealloyingElectrocatalysisElectrocatalystsElectrodesHydrogenNickel alloysRapid solidification Active areaComposites electrodesElectrocatalyticElectrocatalytic propertiesElectrode materialHydrogen-evolutionNano-porousOverpotentialPerformanceRu composites
DOI	10.1039/d2nj01576e
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000798862200001
出版者	ROYAL SOC CHEMISTRY
EI入藏号	20222612286524
EI主题词	Sulfur compounds
EI分类号	539.1 Metals Corrosion548.2 Nickel Alloys549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals801.4.1 Electrochemistry802.2 Chemical Reactions803 Chemical Agents and Basic Industrial Chemicals804 Chemical Products Generally
来源库	WOS
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158649
专题	兰州理工大学
通讯作者	Zhou, Qi
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, 287 Langongping Rd, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, 287 Langongping Rd, Lanzhou 730050, Peoples R China
第一作者单位	材料科学与工程学院
通讯作者单位	材料科学与工程学院; 省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Li, XinBao,Fu, Han,Zhou, Qi. Preparation of heterogeneous NiCo2S4/Ru composite electrode materials and their electrocatalytic properties for hydrogen evolution[J]. NEW JOURNAL OF CHEMISTRY,2022,46(22):10920-10926.
APA	Li, XinBao,Fu, Han,&Zhou, Qi.(2022).Preparation of heterogeneous NiCo2S4/Ru composite electrode materials and their electrocatalytic properties for hydrogen evolution.NEW JOURNAL OF CHEMISTRY,46(22),10920-10926.
MLA	Li, XinBao,et al."Preparation of heterogeneous NiCo2S4/Ru composite electrode materials and their electrocatalytic properties for hydrogen evolution".NEW JOURNAL OF CHEMISTRY 46.22(2022):10920-10926.