Preparation of Ni-Co/RuO2 Composite Electrode and Electrocatalytic Activity for Hydrogen Evolution
Zhou Qi1,2; Duan De-Dong2; Feng Ji-Wei2
2020-12
Source PublicationCHINESE JOURNAL OF INORGANIC CHEMISTRY
ISSN1001-4861
Volume35Issue:12Pages:2301-2310
Abstract

Nanoporous Ni, Co and Ni-Co alloys were prepared by rapid solidification combined with de -alloying. The surface of Ni-Co alloy was modified by RuO2. The phase analysis and morphology of porous materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS),scanning electron microscope (SEM) and transmission electron microscope (TEM). The electrocatalytic hydrogen evolution performance of the porous electrode was tested by linear sweep voltammetry, multi -potential step, alternating current impedance and potentiostatic electrolysis. The results show that the Ni-Co/RuP2 composite electrode material has a hydrogen evolution overpotential of 180 mV at a current density of 50 mA .cm(-2). The hydrogen evolution process was controlled by the Volmer-Heyrovsky step, and the exchange current density was 4.42 mA . cm(-2). Compared with nanoporous Ni, nanoporous Co and nanoporous Ni-Co alloy, Ni-Co/RuO2 composite electrode had the lowest apparent activation energy during hydrogen evolution. After 10 h constant current electrolysis, the potential only increased by 20 mV, showing excellent hydrogen evolution stability.

Keywordde -alloying Ni-Co/RuO2 composite electrode electrocatalytic hydrogen evolution
DOI10.11862/CJIC.2019.258
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Inorganic & Nuclear
WOS IDWOS:000506945100014
PublisherCHINESE CHEMICAL SOC
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/56498
Collection外国语学院
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
Corresponding AuthorZhou Qi
Affiliation1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
2.Lanzhou Univ Technol, Coll Mat Sci & Engn, Lanzhou 730050, Peoples R China
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials;  Coll Mat Sci & Engn
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials;  Coll Mat Sci & Engn
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
GB/T 7714
Zhou Qi,Duan De-Dong,Feng Ji-Wei. Preparation of Ni-Co/RuO2 Composite Electrode and Electrocatalytic Activity for Hydrogen Evolution[J]. CHINESE JOURNAL OF INORGANIC CHEMISTRY,2020,35(12):2301-2310.
APA Zhou Qi,Duan De-Dong,&Feng Ji-Wei.(2020).Preparation of Ni-Co/RuO2 Composite Electrode and Electrocatalytic Activity for Hydrogen Evolution.CHINESE JOURNAL OF INORGANIC CHEMISTRY,35(12),2301-2310.
MLA Zhou Qi,et al."Preparation of Ni-Co/RuO2 Composite Electrode and Electrocatalytic Activity for Hydrogen Evolution".CHINESE JOURNAL OF INORGANIC CHEMISTRY 35.12(2020):2301-2310.
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