Physical and electrochemical properties of porous TiO2 coated silicon prepared with different amounts of basic catalyst of NH4OH

被引：10

作者：

Kim, Bo Eun ^{[1
]}

Park, Sang Eun ^{[1
]}

Lim, Jong Choo ^{[1
]}

Lee, Joong Kee ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Battery Res Ctr, Adv Energy Mat Proc Lab, Seoul 130650, South Korea

来源：

PHYSICA SCRIPTA | 2010年 / T139卷

关键词：

NANOCOMPOSITE FILM; ANODE MATERIAL; LITHIUM; COMPOSITE; INSERTION; ELECTRODE;

D O I：

10.1088/0031-8949/2010/T139/014021

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Encapsulated porous TiO2-coated silicon (TiO2@Si) was prepared by a modified sol-gel method for use as the anode material of lithium secondary batteries. The shell around the porous TiO2 not only acts as a buffer matrix against the volume expansion of silicon during repeated charging-discharging, but also enhances the dispersion of silicon particles. The amount of the basic catalyst NH4OH during the sol-gel reaction plays an important role in the formation of the TiO2 coating structure, which significantly affects its electrochemical characteristics.

引用

页数：3

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