Improving the electrochemical properties of porous LiCoO2 films obtained by template synthesis

被引：17

作者：

Fonseca, CP

Fantini, MCA

Neves, S ^{[1
]}

机构：

[1] Univ Sao Francisco, Lab Caracterizacao & Aplicacao Mat, BR-13251900 Itatiba, SP, Brazil

[2] Univ Sao Paulo, Inst Fis, BR-05289970 Sao Paulo, Brazil

来源：

THIN SOLID FILMS | 2005年 / 488卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

oxide; sol-gel synthesis; batteries;

D O I：

10.1016/j.tsf.2005.04.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A LiCoO2 film was synthesized using a template method, which provided an interconnected pore network with a high surface area. The electrochemical behavior of this new film (PF) was compared with a conventional film (CF) produced by spin coating. The PF had an initial charge/discharge capacity of 87.5/69.5 mAh g(-1) with a 79.4% coulombic charge/discharge efficiency. The CF had a low discharge capacity of 26.7 mAh g(-1) and a charge capacity of 33.9 mAh g(-1); the first charge/discharge efficiency was 78.8%. The electrochemical stability and impedance behavior of this new porous film were also better than those of conventional film. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：68 / 73

页数：6

共 31 条

[1] CoO2, the end member of the LixCoO2 solid solution [J].