| 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 |
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| 引用本文： | 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(3):201-204. |
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| 作者姓名： | 秦琳琳 张焕 刘晓静 许剑辉 施一宁 郑明森 董全峰 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金项目(No.200933005,No.02903077);国家973项目(No.2009CB220102)资助;厦门市纯电动汽车重大科技专项(I期)(No.3502Z20121002) |
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| 摘 要： | 采用无表面活性剂回流法制备了蜂窝状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%.
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| 关 键 词： | 锂离子电池 负极材料 TiO2 石墨烯 |
Preparation and Electrochemical Performance of TiO2/GNs Nanocomposite as Anode Materials for Lithium-Ion Batteries |
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| QIN Lin-lin,ZHANG Huan,LIU Xiao-jing,XU Jian-hui,SHI Yi-ning, ZHENG Ming-sen,DONG Quan-feng.Preparation and Electrochemical Performance of TiO2/GNs Nanocomposite as Anode Materials for Lithium-Ion Batteries[J].Electrochemistry,2012(3):201-204. |
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| Authors: | QIN Lin-lin ZHANG Huan LIU Xiao-jing XU Jian-hui SHI Yi-ning ZHENG Ming-sen DONG Quan-feng |
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| Institution: | (State Key Lab of Physical Chemistry of Solid Surfaces,Department of Chemistry, College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China) |
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| 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 cycles. |
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| Keywords: | lithium-ion battery anode materials TiO2 graphene |
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