Synthesis and electrochemical performance of cubic Co-doped Li4Ti5O12 anode material for high-performance lithium-ion batteries

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	Synthesis and electrochemical performance of cubic Co-doped Li4Ti5O12 anode material for high-performance lithium-ion batteries
	Zhang, Congcong 1; Shao, Dan 2; Yu, Jingfang 3; Zhang, Linzhi 4; Huang, Xueyan 1; Xu, Donghui 1; Yu, Xiaoyuan 1
刊名	journal of electroanalytical chemistry
	2016-09-01
卷号	776 页码:188-192
关键词	Li-ion battery High temperature solid ball-milling method Co-doping Li4Ti5O12
英文摘要	co-doped li4ti5o12 (lcto) anode material for lithium-ion battery was synthesized via a mechanic ball-milling activation and high temperature solid state reaction using coco3, tio2 and li2co3 as raw material. the structure, morphology and electrochemical properties of lcto sample are characterized by x-ray diffraction (xrd), scanning electronic morphology (sem), galvanostatic charge-discharge tests, cyclic voltammetry (cv) and electron chemical impedance spectroscopy (eis) measurements. the lcto is well crystallized as a spinet structure without any detectable impurity phase with the doping of co. thus, lcto exhibits improving cycling stability and rate capability as anode material for lithium ion batteries, which delivered the initial specific capacity of 250, 222, 188, 180, 149 and 118 mah g(-1), at 0.1, 0.2,1.0, 2.0, 5.0 and 10.0 degrees c rate in the voltage range of 0.5-3.0 v respectively, and discharge capacity of 200 mah g(-1) after 100 cycles at 0.1 degrees c. eis results further show that the main reason for the improved electrochemical performance of lcto is its reduced electrochemical impedance, which mainly due to the co-doped modification leads to o vacancies then results in increase amount of embedded lithium in lcto materials. (c) 2016 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, analytical ; electrochemistry
研究领域[WOS]	chemistry ; electrochemistry
关键词[WOS]	high-rate capability ; sol-gel method ; rechargeable batteries ; carbon ; spinel ; titanate ; nanoparticles ; microspheres ; nanosheets ; stability
收录类别	SCI
语种	英语
WOS记录号	WOS:000382348100026
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/11905]
专题	中国科学院广州能源研究所
作者单位	1.South China Agr Univ, Coll Mat & Energy, Inst Biomat, Guangzhou 510642, Guangdong, Peoples R China 2.Guangzhou Inst Energy Testing, Guangzhou 510170, Guangdong, Peoples R China 3.Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA 4.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Congcong,Shao, Dan,Yu, Jingfang,et al. Synthesis and electrochemical performance of cubic Co-doped Li4Ti5O12 anode material for high-performance lithium-ion batteries[J]. journal of electroanalytical chemistry,2016,776:188-192.
APA	Zhang, Congcong.,Shao, Dan.,Yu, Jingfang.,Zhang, Linzhi.,Huang, Xueyan.,...&Yu, Xiaoyuan.(2016).Synthesis and electrochemical performance of cubic Co-doped Li4Ti5O12 anode material for high-performance lithium-ion batteries.journal of electroanalytical chemistry,776,188-192.
MLA	Zhang, Congcong,et al."Synthesis and electrochemical performance of cubic Co-doped Li4Ti5O12 anode material for high-performance lithium-ion batteries".journal of electroanalytical chemistry 776(2016):188-192.