Preparation of Nanoporous Ni and NiO and Their Electrocatalytic Activities for Oxygen Evolution Reaction

doi:10.7503/cjcu20190340

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	Preparation of Nanoporous Ni and NiO and Their Electrocatalytic Activities for Oxygen Evolution Reaction
	Ren Xiangrong ; Zhou Qi1
	2020-01-10
发表期刊	CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN	0251-0790
卷号	41 期号:1 页码:162-174
摘要	Nanoporous 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.
关键词	Rapid quenching Dealloying Nanoporous Ni Electrocatalytic activity Oxygen evolution reaction
DOI	10.7503/cjcu20190340
收录类别	SCI
语种	中文
资助项目	National Natural Science Foundation of China[51661018]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000525759100021
出版者	HIGHER EDUCATION PRESS
引用统计	被引频次：3[WOS] [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/64292
专题	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
通讯作者	Zhou Qi
作者单位	1.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
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	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.