Preparation of Nanoporous Ni and NiO and Their Electrocatalytic Activities for Oxygen Evolution Reaction
Ren Xiangrong; Zhou Qi1
2020-01-10
Source PublicationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN0251-0790
Volume41Issue:1Pages:162-174
AbstractNanoporous Ni was prepared by a combined method of rapid quenching and dealloying, and then the prepared samples were heat-treated to synthesize the nanoporous NiO. The phase, morphology, microstructure and pore-size distribution of nanoporous Ni and NiO were analyzed by X-ray diffraction ( XRD) , scanning electron microscopy (SEM) , transmission electron microscopy (TEM ) and N-2 adsorption-desorption analysis , respectively. Their electrochemical performance was investigated by cyclic voltammetry , electrochemical stea-dy-state polarization and electrochemical impendence spectroscopy (EIS). The results show that the nanoporous Ni obtained from Ni-30 Al-70 has multi-stage nanoporous structure, when the current density is 10 mA/cm(2), the oxygen evolution overpotential is only 224 mV, the exchange current density is 0. 63297 mA/cm(2), and the apparent activation free energy is 40. 297 kJ/mol; after 1000 cycles of voltammetry , the overpotential decreases by 5 mV( j= 10 mA/cm(2)) , showing fine catalysis stability and durability.
KeywordRapid quenching Dealloying Nanoporous Ni Electrocatalytic activity Oxygen evolution reaction
DOI10.7503/cjcu20190340
Indexed BySCI
Language中文
Funding ProjectNational Natural Science Foundation of China[51661018]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000525759100021
PublisherHIGHER EDUCATION PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64292
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, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
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Ren Xiangrong,Zhou Qi. Preparation of Nanoporous Ni and NiO and Their Electrocatalytic Activities for Oxygen Evolution Reaction[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2020,41(1):162-174.
APA Ren Xiangrong,&Zhou Qi.(2020).Preparation of Nanoporous Ni and NiO and Their Electrocatalytic Activities for Oxygen Evolution Reaction.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,41(1),162-174.
MLA Ren Xiangrong,et al."Preparation of Nanoporous Ni and NiO and Their Electrocatalytic Activities for Oxygen Evolution Reaction".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 41.1(2020):162-174.
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