Porous Co3O4 nanofibers surface-modified by reduced graphene oxide as a durable, high-rate anode for lithium ion battery

时间:2018-05-25作者:浏览量:43


标题

Porous Co3O4 nanofibers surface-modified by reduced graphene oxide as a durable, high-rate anode for lithium ion battery

作者

作者:Hu, RZ (Hu, Renzong)[1 ]; Zhang, HP (Zhang, Houpo)[1 ]; Bu, YF (Bu, Yunfei)[2 ]; Zhang, HY (Zhang, Hanyin)[1 ]; Zhao, BT (Zhao, Bote)[3 ]; Yang, CH (Yang, Chenghao)[4 ]

期刊信息


ELECTROCHIMICA ACTA


卷:228

页:241-250

DOI:10.1016/j.electacta.2017.01.067

出版年:FEB 20 2017

文献类型:Article

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摘要

Here we report our findings in synthesis and characterization of porous Co3O4 nanofibers coated with a surface-modification layer, reduced graphene oxide. The unique porous Co3O4@rGO architecture enables efficient stress relaxation and fast Li+ ions and electron transport during discharge/charge cycling. When tested in a half cell, the Co3O4@rGO electrodes display high Coulombic efficiency, enhanced cyclic stability, and high rate capability (similar to 900 mAhig at 1A/g, and similar to 600 mAh/g at SAN). The high capacity is contributed by a stable capacity yielded from reversible conversion reactions above 0.8 V vs. and a increasing capacity induced by the electrolyte decomposition and interfacial storage between 0.8 0.01V during discahrge. A full cell constructed from a Co3O4@rGO anode and a LiMn2O4 cathode delivers good capacity retention with operation voltage of 2.0 V. These performances are better than those of other full cells using alloy or metal oxide anodes. Our work is a preliminary attempt for practicality of high capacity metal oxide anodes in Li-ion batteries used for the electronic devices. (C) 2017 Elsevier Ltd. All rights reserved.

关键词

作者关键词:Cobalt oxides; Reduced graphene oxide; conversion reaction; Full cell performance; Lithium ion batteries

作者信息

作者信息

通讯作者地址:Hu, RZ (通讯作者)

显示更多South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China.


地址:

显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China
显示更多[ 2 ] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China
显示更多[ 3 ] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
显示更多[ 4 ] South China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China


电子邮件地址:msrenzonghu@scut.edu.cn

出版商

PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

类别分类

类别 / 分类

研究方向:Electrochemistry

Web of Science 类别:Electrochemistry