Fabrication of nanoporous Ni and NiO via a dealloying strategy for water oxidation catalysis

doi:10.1016/j.jechem.2020.03.020

	Fabrication of nanoporous Ni and NiO via a dealloying strategy for water oxidation catalysis
	Ren, Xiangrong 1,2,3; Zhai, Yiyue 1; Zhou, Qi 2,3; Yan, Junqing 1; Liu, Shengzhong 1
	2020-11
发表期刊	Journal of Energy Chemistry
ISSN	20954956
卷号	50 页码:125-134
摘要	Nickel oxides and (oxy)hydroxides are promising replacements for noble-metal-based catalysts owing to their high activity and good long-term stability for the oxygen evolution reaction (OER). Herein, we developed nanoporous Ni by a method of combined rapid solidification and chemical dealloying. Subsequently, nanoporous NiO was obtained via heating treatment, the macropore and skeleton sizes of the NiO originated from Ni10Al90 alloy are 100–300 nm and 80–200 nm, respectively. Benefiting from the multi-stage nanoporous structure and high specific surface area, the nanoporous NiO demonstrates an outstanding OER, reaching 20 mA cm−2 at an overpotential of 356 mV in 1 M KOH. The corresponding Tafel slope and apparent activation energy are measured to be 76.73 mV dec−1 and 29.0 kJ mol−1, respectively. Moreover, kinetic analysis indicates that the NiO catalyst shows pseudocapacitive characteristics, and the improved current is attributed to the high-rate pseudocapacitive behavior that efficiently maintains increased nickel redox cycling to accelerate the reaction rates. After 1000 cycles of voltammetry, the overpotential of the NiO decreases by 22 mV (j = 10 mA cm−2), exhibiting excellent stability and durability. © 2020
关键词	Activation energy Aluminum alloys Binary alloys Catalysts Dealloying Potassium hydroxide Precious metals Rapid solidification Reaction rates Apparent activation energy Chemical dealloying High specific surface area Long term stability Metal-based catalysts Nanoporous structures Oxygen evolution reaction (oer) Pseudocapacitive behavior
DOI	10.1016/j.jechem.2020.03.020
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
WOS类目	Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000569401000001
出版者	Elsevier B.V., Netherlands
EI入藏号	20201508391382
EI主题词	Nickel oxide
EI分类号	541.2 Aluminum Alloys ; 547.1 Precious Metals ; 802.2 Chemical Reactions ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds
来源库	WOS
引用统计	被引频次：28[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/151018
专题	兰州理工大学
通讯作者	Zhou, Qi; Yan, Junqing; Liu, Shengzhong
作者单位	1.Shaanxi Normal Univ, Shaanxi Engn Lab Adv Energy Technol, Key Lab Appl Surface & Colloid Chem, Sch Mat Sci & Engn,Minist Educ, Xian 710119, Shaanxi, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 3.Lanzhou Univ Technol, Mat Sci & Engn Coll, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
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; 兰州理工大学
推荐引用方式 GB/T 7714	Ren, Xiangrong,Zhai, Yiyue,Zhou, Qi,et al. Fabrication of nanoporous Ni and NiO via a dealloying strategy for water oxidation catalysis[J]. Journal of Energy Chemistry,2020,50:125-134.
APA	Ren, Xiangrong,Zhai, Yiyue,Zhou, Qi,Yan, Junqing,&Liu, Shengzhong.(2020).Fabrication of nanoporous Ni and NiO via a dealloying strategy for water oxidation catalysis.Journal of Energy Chemistry,50,125-134.
MLA	Ren, Xiangrong,et al."Fabrication of nanoporous Ni and NiO via a dealloying strategy for water oxidation catalysis".Journal of Energy Chemistry 50(2020):125-134.