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Fabrication of lithium titanate/graphene composites with high rate capability as electrode materials for hybrid electrochemical supercapacitors
Xue, Rong; Yan, Jingwang; Jiang, Liang; Yi, Baolian
KeywordComposite Materials Sol-gel Growth Electrochemical Techniques Electrochemical Properties
Source PublicationMATERIALS CHEMISTRY AND PHYSICS
2015-06-15
DOI10.1016/j.matchemphys.2015.04.055
Volume160Pages:375-382
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectMaterials Science, Multidisciplinary
WOS Research AreaMaterials Science
WOS KeywordREDUCED GRAPHENE OXIDE ; ION BATTERIES ; LI4TI5O12 ANODE ; GRAPHITE ; POLYANILINE ; PERFORMANCE ; REDUCTION ; INSERTION ; BEHAVIOR
AbstractA lithium titanate (Li4Ti5O12)/graphene composite (LTO/graphene) is fabricated with a one-pot sol-gel method. Graphite oxide is dispersed in an aqueous solution of lithium acetate and tetrabutyl titanate followed by heat treatment in H-2/Ar. The LTO/graphene composite with reduced aggregation and improved homogeneity is investigated as an anode material for electrochemical capacitors. Electron transport is improved by the conductive graphene network in the insulating Li4Ti5O12 particles. The charge transfer resistance at the particle/electrolyte interface is reduced from 83.1 Omega to 55.4 Omega. The specific capacity of LTO/graphene composite is 126 mAh g(-1) at 20C. The energy density and power density of a hybrid electrochemical supercapacitor with a LTO/graphene negative electrode and an activated carbon positive electrode are 120.8 Wh kg(-1) and 1.5 kW kg(-1), respectively, which is comparable to that of conventional electrochemical double layer capacitors (EDLCs). The LTO/graphene composite fabricated by the one-pot sol-gel method is a promising anode material for hybrid electrochemical supercapacitors. (C) 2015 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000356210200048
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146317
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Xue, Rong,Yan, Jingwang,Jiang, Liang,et al. Fabrication of lithium titanate/graphene composites with high rate capability as electrode materials for hybrid electrochemical supercapacitors[J]. MATERIALS CHEMISTRY AND PHYSICS,2015,160:375-382.
APA Xue, Rong,Yan, Jingwang,Jiang, Liang,&Yi, Baolian.(2015).Fabrication of lithium titanate/graphene composites with high rate capability as electrode materials for hybrid electrochemical supercapacitors.MATERIALS CHEMISTRY AND PHYSICS,160,375-382.
MLA Xue, Rong,et al."Fabrication of lithium titanate/graphene composites with high rate capability as electrode materials for hybrid electrochemical supercapacitors".MATERIALS CHEMISTRY AND PHYSICS 160(2015):375-382.
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