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Synthesis and electrochemical performance of cubic Co-doped Li4Ti5O12 anode material for high-performance lithium-ion batteries
Zhang, Congcong1; Shao, Dan2; Yu, Jingfang3; Zhang, Linzhi4; Huang, Xueyan1; Xu, Donghui1; Yu, Xiaoyuan1
2016-09-01
Source PublicationJOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume776Pages:188-192
AbstractCo-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.
SubtypeArticle
KeywordLi-ion Battery High Temperature Solid Ball-milling Method Co-doping Li4ti5o12
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.jelechem.2016.07.017
WOS Subject ExtendedChemistry ; Electrochemistry
WOS KeywordHIGH-RATE CAPABILITY ; SOL-GEL METHOD ; RECHARGEABLE BATTERIES ; CARBON ; SPINEL ; TITANATE ; NANOPARTICLES ; MICROSPHERES ; NANOSHEETS ; STABILITY
Indexed BySCI
Language英语
Funding OrganizationGuangdong Science and Technology Planning Project(2015A020209147) ; Guangdong Natural Science Foundation(9151064201000039) ; National Natural Science Foundation of China(51003034) ; Key Academic Program of the 3rd phase '211 Project'(2009B010100001)
WOS SubjectChemistry, Analytical ; Electrochemistry
WOS IDWOS:000382348100026
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/11905
Collection中国科学院广州能源研究所
Affiliation1.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
Recommended Citation
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.
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