zsqxinghe的个人博客分享 http://blog.sciencenet.cn/u/zsqxinghe


JMCA - MnCO3 lithium ion battery 碳酸锰 石墨烯 锂离子电池

已有 3558 次阅读 2015-11-20 06:23 |个人分类:我的文章|系统分类:科研笔记| battery, 锂离子电池, 碳酸锰, MnCO3

Journal of Materials Chemistry A, 2015, DOI: 10.1039/c5ta07390a

Flower-to-petal structural conversion and enhanced interfacial storage capability of hydrothermally crystallized MnCO3 via the in situ mixing of graphene oxide

Shiqiang Zhao, Fan Feng, Faqi Yu and Qiang Shen*

Graphene oxide (GO) possesses high electron conductivity and good chemical-binding ability and thus can

be used as a multifunctional additive for the preparation and application of electrode materials. As for the

hydrothermal crystallization of MnCO 3 herein, the absence of GO causes the formation of MnCO3 flower-

like architectures composed of secondary spindles, while the presence of GO induces the  ower-to-petal

structural  conversion  and  results  in  MnCO 3 spindle–GO  composites.  When  applied  as  Li-ion  battery

anodes, the composite electrode delivers an initial coulombic e  ciency (CE) of 71% and a reversible

capacity of 1474 mA h g 1 in the 400th cycle, much higher than those of MnCO3 flowers (the initial CE

 58%, the 400th capacity  1095 mA h g 1 ) operated under the same conditions. In particular, the

combination of discharging behavior and its di  erential capacity pro  le has been successfully used to

estimate the interfacial contribution fraction (42%) of the whole reversible capacity (i.e., 1474 mA h g 1 )

enhanced by the in situ mixing of 8.3 wt% GO.




上一篇:JMCA-CoxFe1-xCO3 lithium ion battery碳酸钴铁复合盐锂离子电池
下一篇:ACS Energy- Ni(HCO3)2 lithium ion battery 碳酸氢镍锂离子电池
收藏 IP: 128.61.21.*| 热度|


该博文允许注册用户评论 请点击登录 评论 (0 个评论)


Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2024-3-2 20:20

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社