Preparation of TiO2-coated LiMn2O4 by carrier transfer method

被引：29

作者：

Lai, Caie ^{[1
]}

Ye, Wenyi ^{[1
]}

Liu, Huiyong ^{[1
]}

Wang, Wenji ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350002, Fujian, Peoples R China

来源：

IONICS | 2009年 / 15卷 / 03期

关键词：

Carrier transfer method; LiMn2O4; TiO2-coated; Li-ion battery; Electrochemical characterization; ELEVATED-TEMPERATURE PERFORMANCE; LI-ION BATTERY; ELECTROCHEMICAL PROPERTIES; SURFACE MODIFICATION; CYCLING STABILITY; LITHIUM; ELECTRODES; CATHODE;

D O I：

10.1007/s11581-008-0290-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The TiO2-coated LiMn2O4 has been prepared by a carrier transfer method and investigated. This novel synthetic method involved the transfer of TiO2 into the surface of LiMn2O4 with Vulcan XC-72 active carbon powders as a dispersant. The X-ray diffraction shows that spinel structure of materials does not change after the coating of TiO2. The electrochemical performance tests show that the initial discharge capacity of TiO2-modified LiMn2O4 is 111.5 mA h g(-1), which is better than that of pristine LiMn2O4 (103.8 mA h g(-1)). The cyclic performance is significantly improved after surface modification. The TiO2-modified LiMn2O4 by a carrier transfer method exhibits better discharge capability and lower resistance.

引用

页码：389 / 392

页数：4

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