Nickel/Nickel Oxide-Nitrogen Self-Doped Carbon Nanosheets for Electrocatalytic Oxygen and Hydrogen Evolution Reactions

doi:10.1021/acsanm.2c00222

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	Nickel/Nickel Oxide-Nitrogen Self-Doped Carbon Nanosheets for Electrocatalytic Oxygen and Hydrogen Evolution Reactions
	Liu, Yixin 2; Mou, Guizhen 2; Wang, Yuqing 2; He, Fangzhen 2; Dong, Na 3; Lin, Yasu 1; Zhong, Ming 1; Su, Bitao 2
刊名	ACS Applied Nano Materials
	2022-02-25
卷号	5 期号:2 页码:2953-2961
关键词	Calcination Carbon Electrocatalysts Electrolysis Energy conversion Hydrogen Nickel oxide Nitrogen Oxygen Potassium hydroxide Transition metals Carbon nanosheets Corn stalk Doped carbons Hydrogen evolution reactions Nickel-nickel oxide Nickel/nickel oxide-nitrogen self-doped carbon Porous nanosheet Self-doped Waste corn stalk Water splitting
DOI	10.1021/acsanm.2c00222
英文摘要	The search for bifunctional electrocatalysts with low cost and high efficiency to drive the development of water splitting is essential for sustainable energy conversion. In this work, a simple two-step biomass-Assisted impregnation-calcination strategy was adopted to prepare a series of porous nickel/nickel oxide-nitrogen self-doped carbon (Ni/NiO-NC) nanosheet composites using waste corn stalks (CSs) as a multifunctional template, reductant, and carbon and nitrogen sources. The contents of carbon, nickel, and nickel oxide components can be adjusted by varying the calcination temperature and CS amount. When they are applied as electrocatalysts in the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), the optimal Ni/NiO-NC nanosheet obtained at 300 °C and 1.00 g of CS displays the best OER and HER activities in 1.0 M KOH media with low overpotentials of 293 and 179 mV at 10 mV cm-2, small Tafel slopes of 141 and 111 mV dec-1, respectively, and good stability. Furthermore, a water electrolyzer is also fabricated by utilizing cheap nonprecious Ni/NiO-NC-300 as both OER and HER catalysts to investigate the water-splitting performance. This as-reported simple, environmental, and cheap strategy could be extended to develop other two-dimensional transition-metal-based nanosheet electrocatalysts for a high-performance water-splitting reaction. © 2022 American Chemical Society. All rights reserved.
语种	英语
出版者	American Chemical Society
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157885]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou; 730070, China; 3.Department of Chemistry, Gansu Medical College, Gansu, Pingliang; 744000, China
推荐引用方式 GB/T 7714	Liu, Yixin,Mou, Guizhen,Wang, Yuqing,et al. Nickel/Nickel Oxide-Nitrogen Self-Doped Carbon Nanosheets for Electrocatalytic Oxygen and Hydrogen Evolution Reactions[J]. ACS Applied Nano Materials,2022,5(2):2953-2961.
APA	Liu, Yixin.,Mou, Guizhen.,Wang, Yuqing.,He, Fangzhen.,Dong, Na.,...&Su, Bitao.(2022).Nickel/Nickel Oxide-Nitrogen Self-Doped Carbon Nanosheets for Electrocatalytic Oxygen and Hydrogen Evolution Reactions.ACS Applied Nano Materials,5(2),2953-2961.
MLA	Liu, Yixin,et al."Nickel/Nickel Oxide-Nitrogen Self-Doped Carbon Nanosheets for Electrocatalytic Oxygen and Hydrogen Evolution Reactions".ACS Applied Nano Materials 5.2(2022):2953-2961.