Facile preparation of Co@Co3O4@Nitrogen doped carbon composite from ionic liquid as anode material for high performance lithium-ion batteries

doi:10.2478/msp-2020-0065

	Facile preparation of Co@Co3O4@Nitrogen doped carbon composite from ionic liquid as anode material for high performance lithium-ion batteries
	Xiao, Mingjun 1; Meng, Yanshuang 1,2; Duan, Chaoyu 1; Zhu, Fuliang 1,2; Zhang, Yue 3
刊名	Materials Science- Poland
	2020-12-01
卷号	38 期号:4 页码:601-612
关键词	Anodes Carbon carbon composites Carbonization Cobalt Composite structures Doping (additives) Electric discharges High resolution transmission electron microscopy Ionic liquids Lithium-ion batteries Nanocrystalline materials Nanoparticles Nitrogen Temperature Thermooxidation Cobalt nanoparticles Discharge capacities Electrochemical performance High-performance lithium-ion batteries Low-temperature oxidation Nitrogen functional groups Nitrogen-doped carbons Structural characterization
ISSN号	20831331
DOI	10.2478/msp-2020-0065
英文摘要	Co@Co3O4@Nitrogen doped carbon (Co@Co3O4@NDC) composite is synthesized by high temperature carbonization of ionic liquids followed by low temperature thermal oxidation. In the process of high temperature carbonization, cobalt ions are reduced to metallic cobalt, producing Co@Nitrogen doped carbon (Co@NDC). Co@Co3O4@NDC composite is obtained after low temperature oxidation, in which a part of the metallic cobalt is oxidized to Co3O4. The structural characterizations indicate that the composite is composed of three crystalline phases (carbon, Co and Co3O4). The results of transmission electron microscopy study show that the carbon materials not only coat the Co@Co3O4 nanoparticles, but also form carbon network that connects the Co@Co3O4 nanoparticles. This conductive carbon network is beneficial to improve the electrochemical performance of the composite. The electrochemical test results show that the Co@Co3O4@NDC composite exhibits excellent electrochemical performance, delivering the discharge capacities of 790 and 304 mAg-1 after 1500 cycles at 5 C and 10 C. This excellent electrochemical performance is due to synergistic effects of Co3O4, cobalt nanoparticles embedded in carbon which has high conductivity, and nitrogen functional groups. © 2020 Mingjun Xiao et al., published by Sciendo 2020.
WOS研究方向	Materials Science
语种	英语
出版者	Sciendo
WOS记录号	WOS:000644542700012
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151163]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou; 730050, China 3.Department of Manufacturing Engineering, Georgia Southern University, Statesboro; GA; 30458, United States;
推荐引用方式 GB/T 7714	Xiao, Mingjun,Meng, Yanshuang,Duan, Chaoyu,et al. Facile preparation of Co@Co3O4@Nitrogen doped carbon composite from ionic liquid as anode material for high performance lithium-ion batteries[J]. Materials Science- Poland,2020,38(4):601-612.
APA	Xiao, Mingjun,Meng, Yanshuang,Duan, Chaoyu,Zhu, Fuliang,&Zhang, Yue.(2020).Facile preparation of Co@Co3O4@Nitrogen doped carbon composite from ionic liquid as anode material for high performance lithium-ion batteries.Materials Science- Poland,38(4),601-612.
MLA	Xiao, Mingjun,et al."Facile preparation of Co@Co3O4@Nitrogen doped carbon composite from ionic liquid as anode material for high performance lithium-ion batteries".Materials Science- Poland 38.4(2020):601-612.