Highly reversible Co3O4/graphene hybrid anode for lithium rechargeable batteries

被引：337

作者：

Kim, Haegyeom ^{[1
]}

Seo, Dong-Hwa ^{[2
]}

Kim, Sung-Wook ^{[2
]}

Kim, Jongsoon ^{[2
]}

Kang, Kisuk ^{[1
,2
,3
]}

机构：

[1] Korea Adv Inst Sci & Technol, Grad Sch Energy Environm Water & Sustainabil, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

[3] Korea Adv Inst Sci & Technol, KAIST Inst Eco Energy, Taejon 305701, South Korea

来源：

CARBON | 2011年 / 49卷 / 01期

关键词：

ELECTRODE MATERIALS; ION BATTERIES; STORAGE; OXIDE; NANOPARTICLES; FABRICATION; COMPOSITES; REDUCTION; NANOWIRES; CAPACITY;

D O I：

10.1016/j.carbon.2010.09.033

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A Co3O4/graphene hybrid material was fabricated using a simple in situ reduction process and demonstrated as a highly reversible anode for lithium rechargeable batteries The hybrid is composed of 5 nm size Co3O4 particles uniformly dispersed on graphene, as observed by transmission electron microscopy, atomic force microscopy, Raman spectroscopy and X ray diffraction analysis The Co3O4/graphene anode can deliver a capacity of more than 800 mA h g(-1) reversibly at a 200 mA g(-1) rate in the voltage range between 3 0 and 0 001 V The high reversible capacity is retained at elevated current densities At a cur rent rate as high as 1000 mA g, the Co3O4/graphene anode can deliver more than 550 mA h g(-1), which is significantly higher than the capacity of current commercial graphite anodes The superior electrochemical performance of the Co3O4/graphene is attributed to its unique nanostructure, which intimately combines the conductive graphene network with uniformly dispersed nano Co3O4 particles (C) 2010 Elsevier Ltd All rights reserved

引用

页码：326 / 332

页数：7

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