Li2TiO3/Graphene and Li2TiO3/CNT Composites as Anodes for High Power Li-Ion Batteries

被引：23
作者：
Lakshmi-Narayana, Ambadi [1 ]
Dhananjaya, Merum [1 ]
Guru-Prakash, Nunna [1 ]
Hussain, Obili M. [1 ]
Mauger, Alain [2 ]
Julien, Christian M. [2 ]
机构：
[1] Sri Venkateswara Univ, Dept Phys, Thin Films Lab, Tirupati 517502, Andhra Prades, India
[2] UPMC Univ Paris 06, Sorbonne Univ, IMPMC, CNRS,UMR 7590, 4 Pl Jussieu, F-75005 Paris, France
来源：
CHEMISTRYSELECT | 2018年 / 3卷 / 31期
关键词：
Composite anodes; Electrochemical performance; Li2TiO3/CNT; Li2TiO3/graphene; Solid state reaction; CRYSTALLITE GROWTH; GRAPHENE SHEETS; LITHIUM; LI4TI5O12; NANOTUBES; PERFORMANCE; REFINEMENT; INSERTION; BEHAVIOR; DOPANT;
D O I：
10.1002/slct.201801510
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three-dimensional composites Li2TiO3/graphene (LTO/Gr) and Li2TiO3/carbon nanotube (LTO/CNTs) were synthesized by solid-state reaction for application as anode materials for lithium-ion batteries. These composites are structurally characterized by X-ray diffraction, Raman spectroscopy and high-resolution transmission electron microscopy, while electrochemically tests are performed by cyclic voltammetry and chronopotentiometry. The synergetic effect of graphene and CNTs with LTO facilitate the network conduction leading to faster electron and Li+ ion transfer and improve cycling stability and rate capability of the anode. The LTO/Gr and LTO/CNTs composites exhibited an initial discharge capacity as high as 154 and 149 mAh g(-1) at 1C rate, respectively and retained excellent cycling stability of 98% and 96% after 30 charge-discharge cycles.
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收藏
页码：9150 / 9158
页数：9
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