Study on the Improvement of Rate Capability of Spinel Li4Ti5O12 with Graphene/Carbon Nanotubes Binary Conductive Additive

被引：0

作者：

Li, Xing ^{[1
,2
]}

Huang, Pengxiao ^{[1
]}

Peng, Hui ^{[1
]}

Zhou, Ying ^{[1
,2
]}

Li, Wen ^{[3
]}

Qu, Meizhen ^{[3
]}

机构：

[1] Southwest Petr Univ, Sch Mat Sci & Engn, Chengdu 610500, Peoples R China

[2] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Peoples R China

[3] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2014年 / 9卷 / 11期

基金：

中国国家自然科学基金;

关键词：

graphene/CNTs; binary conductive additive; spinel lithium titanate; rate capability; lithium ion batteries; LITHIUM-ION BATTERIES; LICOO2 COMPOSITE CATHODES; SOLID-STATE REACTION; ELECTROCHEMICAL PERFORMANCE; ANODE MATERIAL; CARBON NANOTUBES; POWER; ELECTRODE; BEHAVIOR; LIFEPO4;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A graphene/CNTs binary conductive additive was synthesized by in situ reducing the graphite oxide/CNTs mixture in Ar atmosphere. The binary conductive additive consists of graphene nanosheets and CNTs, which could more efficiently improve the electronic conductivity of the spinel Li4Ti5O12 than that using single graphene or CNTs as conductive additive. The Li4Ti5O12 using the graphene/CNTs as conductive additive exhibits excellent rate capability. At 0.2 C, its initial discharge specific capacity is 172 mAh/g, which is close to the theoretical value of the spinel Li4Ti5O12 (175 mAh/g). And even \at the high rate of 5.0 C, 10.0 C and 20.0 C, it can still remain at 147 mAh/g, 136 mAh/g and 110 mAh/g, respectively.

引用

页码：6258 / 6265

页数：8

共 24 条

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