功率型锂离子电池负极材料TiO2/石墨烯的制备及其电化学性能研究

秦琳琳; 张焕; 刘晓静; 许剑辉; 施一宁; 郑明森; 董全峰

doi:10.61558/2993-074X.2904

电化学 >

2012 , Vol. 18 >Issue 3: 201 - 204

DOI: https://doi.org/10.61558/2993-074X.2904

研究快讯

功率型锂离子电池负极材料TiO₂/石墨烯的制备及其电化学性能研究

秦琳琳 ,
张焕 ,
刘晓静 ,
许剑辉 ,
施一宁 ,
郑明森 ,
董全峰

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厦门大学固体表面物理化学国家重点实验室，化学化工学院化学系，福建厦门 361005

收稿日期: 2012-04-30

修回日期: 2012-05-10

网络出版日期: 2012-05-15

基金资助

国家自然科学基金项目（No. 200933005, No. 02903077），国家972项目（No. 2009CB220102）资助和厦门市纯电动汽车重大科技专项（I期）（No. 3502Z20121002）

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Preparation and Electrochemical Performance of TiO₂/GNs Nanocomposite as Anode Materials for Lithium-Ion Batteries

QIN Lin-Lin ,
ZHANG Huan ,
LIU Xiao-Jing ,
XU Jian-Hui ,
SHI Yi-Ning ,
ZHENG Ming-Sen ,
DONG Quan-Feng

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State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China

Received date: 2012-04-30

Revised date: 2012-05-10

Online published: 2012-05-15

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摘要

采用回流法制备出了蜂窝状的TiO2/石墨烯（GNs）复合材料.扫描电子显微镜（SEM）及透射电子显微镜（TEM）表征结果表明，TiO2颗粒约5~10 nm，均匀地分散在石墨烯的表面.锂电池测试显示，1C充电容量稳定在240.1 mAh?g-1；30C充电容量为169.5 mAh?g-1；当电流调回1C时，其充电容量仍可完全恢复（241.7 mAh?g-1）；10C 300周期循环电极容量保持率为89.8%.

关键词： 锂离子电池; 负极材料; TiO2; 石墨烯

本文引用格式

秦琳琳 , 张焕 , 刘晓静 , 许剑辉 , 施一宁 , 郑明森 , 董全峰 . 功率型锂离子电池负极材料TiO₂/石墨烯的制备及其电化学性能研究[J]. 电化学, 2012 , 18(3) : 201 -204 . DOI: 10.61558/2993-074X.2904

Abstract

The honeycomb-like porous TiO2/graphenes (TiO2/GNs) nanocomposite was prepared by a reflux method. SEM and TEM results showed that nanosized anatase TiO2 (about 5~10 nm) were dispersed uniformly on the surface of the GNs. The TiO2/GNs composite showed excellent rate and cycling performance: A stable charge capacity of 169.5 mAh?g-1 was obtained at 30C, and can restore to 241.7 mAh?g-1 while current went back to 1C. The stable charge capacity of TiO2/GNs nanocomposite electrode up to 201.9 mAh?g-1 was achieved at 10C in the first cycle, and could be maintained at 181.4 mAh?g-1 after 300 times of cycling.

Key words： lithium-ion battery; anode materials; TiO2; graphene

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