| Synthesis and electrochemical properties of nanocrystalline Li[Li1／3Ti5／3O4] by complex sol-gel method |
| |
| 引用本文： | 杨建文,钟晖,钟海云,戴艳阳,李荐,赵绚. Synthesis and electrochemical properties of nanocrystalline Li[Li1／3Ti5／3O4] by complex sol-gel method[J]. 中国有色金属学会会刊, 2004, 14(5): 1012-1016 |
| |
| 作者姓名： | 杨建文 钟晖 钟海云 戴艳阳 李荐 赵绚 |
| |
| 作者单位： | School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China |
| |
| 摘 要： | 1 INTRODUCTIONSpinelLi[Li1/3Ti5/3O4 ]isaveryattractiveelec trodematerialforitsexcellentcyclelifeandpromisingchargingrateinrechargeableenergystoragecells .Duringelectrochemicalreactionsconsistingofelectronandlithiumioninsertionintoorextractionfromit,itslatticeconstantchangesveryslightly ,soitiscon sidereda“zero strain”insertioncompound[13] .Thismaterialwassuccessfullyusedasanodecoupledwithhighpotentialcathodematerials (LiMn2 O4 ,LiCoO2oractivecarbonfiber)toprovideacellorhybridsu perc…
|
| 关 键 词： | 电化学特征 微晶体材料 Li[Li1／3Ti5／3O4] 溶胶-凝胶方法 电池 |
Synthesis and electrochemical properties of nanocrystalline Li[Li1/3Ti5/3O4] by complex sol-gel method |
| |
| YANG Jian-wen,ZHONG Hui,ZHONG Hai-yun,DAI Yan-yang,LI Jian,ZHAO Xuan. Synthesis and electrochemical properties of nanocrystalline Li[Li1/3Ti5/3O4] by complex sol-gel method[J]. Transactions of Nonferrous Metals Society of China, 2004, 14(5): 1012-1016 |
| |
| Authors: | YANG Jian-wen ZHONG Hui ZHONG Hai-yun DAI Yan-yang LI Jian ZHAO Xuan |
| |
| Abstract: | Li[Li1/3 Ti5/3 O4] spinel-framework structure material is a kind of great interest for negative electrodes in energy storage cell. The synthesis of nanocrystalline Li[Li1/3 Ti5/3 O4] by sol-gel method using inorganic compounds and citric acid is developed, and single phase powder is obtained above 700 ℃. The electrochemical performances of Li[Li1/3Ti5/3O4] cathodes in lithium cell are studied. Special capacities are 131 mA · h · g-1 at 0.5C rate and 154 mA · h · g-1 at 0.1C in cycle test. No passivation layer is formed on Li[Li1/3Ti5/3O4] anode in lithium ion battery, and it is much safer than lithium metal and carbonaceous anodes. Faradic impedance in the charged cell is remarkably higher than that in discharged state, which is caused by distinct conductivities of Li [ Li1/3 Ti5/3 O4 ] and Li2 [Li1/3 Ti5/3 O4 ]. |
| |
| Keywords: | Li[Li1/3 Ti5/3 O4 ] synthesis sol-gel method electrochemical properties |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
