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Carbon-coated isotropic natural graphite spheres as anode material for lithium-ion batteries
Wu, Xuan1; Yang, Xuelin1; Zhang, Fei1; Cai, Liangting1; Zhang, Lulu1; Wen, Zhaoyin2
2017
发表期刊Ceramics International
ISSN02728842
卷号43期号:12页码:9458-9464
摘要Carbon coated isotropic natural graphite spheres (INGS/C) has been prepared by spray granulation using the by-product of spherical natural graphite (i.e., superfine graphite powders) as starting materials. In INGS/C, small graphite flakes are packed in disordered orientation and form an isotropic structure, which may effectively reduce local stress concentration appearing in the process of Li+insertion/extraction. The pyrolytic carbon decomposed from polyvinyl alcohol (PVA) and citric acid is connecting the small graphite flakes and coating on the surface of INGS, respectively, thus forms a continuous conductive network to improve the electron transmission and maintain the micro-structural integrity of isotropic natural graphite spheres as well. With the help of synergetic effect between the isotropic structure of INGS and the continuous conductive network, the INGS/C electrode exhibits superior rate capability of 346 mA h g−1at 3 C at low potential below 0.25 V. © 2017 Elsevier Ltd and Techna Group S.r.l.
DOI10.1016/j.ceramint.2017.04.123
EI入藏号20171803623775
EI主题词Lithium-ion batteries
EI分类号714.1 Electron Tubes - 813 Coatings and Finishes - 813.2 Coating Materials
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25762
专题中国科学院上海硅酸盐研究所
作者单位1.College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, 8 Daxue Road, Yichang; Hubei; 443002, China;
2.Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding xi Road, Shanghai; 200050, China
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GB/T 7714
Wu, Xuan,Yang, Xuelin,Zhang, Fei,et al. Carbon-coated isotropic natural graphite spheres as anode material for lithium-ion batteries[J]. Ceramics International,2017,43(12):9458-9464.
APA Wu, Xuan,Yang, Xuelin,Zhang, Fei,Cai, Liangting,Zhang, Lulu,&Wen, Zhaoyin.(2017).Carbon-coated isotropic natural graphite spheres as anode material for lithium-ion batteries.Ceramics International,43(12),9458-9464.
MLA Wu, Xuan,et al."Carbon-coated isotropic natural graphite spheres as anode material for lithium-ion batteries".Ceramics International 43.12(2017):9458-9464.
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