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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
关键词Composite Materials Sol-gel Growth Electrochemical Techniques Electrochemical Properties
刊名MATERIALS CHEMISTRY AND PHYSICS
2015-06-15
DOI10.1016/j.matchemphys.2015.04.055
160页:375-382
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Materials Science, Multidisciplinary
研究领域[WOS]Materials Science
关键词[WOS]REDUCED GRAPHENE OXIDE ; ION BATTERIES ; LI4TI5O12 ANODE ; GRAPHITE ; POLYANILINE ; PERFORMANCE ; REDUCTION ; INSERTION ; BEHAVIOR
英文摘要A 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.
语种英语
WOS记录号WOS:000356210200048
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146317
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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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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