Iron oxide/graphene composites as negative-electrode materials for lithium ion batteries - optimum particle size for stable performance

被引：7

作者：

Sun, Qian ^{[1
]}

Liu, Xiang ^{[1
]}

Djurisic, Aleksandra B. ^{[1
]}

Leung, Tik Lun ^{[2
]}

Xie, Maohai ^{[1
]}

Ng, Alan M. C. ^{[1
,3
]}

Li, Hang Kong ^{[4
]}

Deng, Zhaofeng ^{[2
]}

Shih, Kaimin ^{[4
]}

机构：

[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

[3] South Univ Sci & Technol China, Dept Phys, Shenzhen, Peoples R China

[4] Univ Hong Kong, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 111期

关键词：

ANODE MATERIALS; GRAPHENE NANOSHEETS; STORAGE; OXIDE; HYBRID; FE2O3/GRAPHENE; SHELL;

D O I：

10.1039/c5ra19852f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We synthesized Fe2O3/graphene composites by a hydrothermal method. The effect of varying the pH in the range pH = 8-12 on the properties of the composites and their performance as negative-electrode materials in lithium ion batteries was investigated. The particle size increased with increasing pH. The best battery performance was obtained for composites prepared at pH = 10 (specific capacity exceeding 800 mA h g(-1) after 60 cycles) due to superior preservation of the electrode morphology compared to samples prepared at lower or higher pH values.

引用

页码：91466 / 91471

页数：6

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