Sol-gel synthesis and electrochemical properties of c-axis oriented LiCoO2 for lithium-ion batteries

被引：19

作者：

Gao, Sen ^{[1
]}

Wei, Wei ^{[1
]}

Ma, Maixia ^{[1
]}

Qi, Juanjuan ^{[1
]}

Yang, Jie ^{[1
]}

Chu, Shengqi ^{[2
]}

Zhang, Jing ^{[2
]}

Guo, Lin ^{[1
]}

机构：

[1] Beihang Univ, Sch Chem & Environm, Beijing 100191, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 64期

基金：

中国国家自然科学基金;

关键词：

HIGH-RATE PERFORMANCE; X-RAY; LOCAL-STRUCTURE; CATHODE MATERIALS; RECENT PROGRESS; COBALT OXIDE; HIGH-VOLTAGE; LONG-RANGE; THIN-FILMS; HIGH-POWER;

D O I：

10.1039/c5ra06571b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To improve the performance of LiCoO2 as a cathode for lithium-ion batteries, the electrochemical properties of c-axis oriented LiCoO2 were studied. LiCoO2 samples with controllable intensity ratios of peak (003) to peak (104) were synthesized via a resorcinol-formaldehyde sol-gel method, followed by an air-controlled high temperature treatment. Electrochemical measurements showed that LiCoO2 with a low degree of c-axis orientation exhibited better performance than LiCoO2 with a high degree of c-axis orientation. X-ray absorption spectroscopy was used to reveal the texture-property relationship between the different products. The variances could be attributed to the different electrochemical active sites created and the diffusion lengths for the lithium ions related to c-axis orientation.

引用

页码：51483 / 51488

页数：6

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