Effects of graphene with different sizes as conductive additives on the electrochemical performance of a LiFePO4 cathode

doi:10.1039/c7ra02155k

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 超电产业综合技术事业部

	Effects of graphene with different sizes as conductive additives on the electrochemical performance of a LiFePO4 cathode
	Liu, Tao 1,2; Sun, Shimei 1; Zang, Zhao 3; Li, Xichao 1; Sun, Xiaolin 1; Cao, Fengting 1; Wu, Jianfei 1
刊名	RSC ADVANCES
	2017
卷号	7 期号:34 页码:20882-20887
DOI	10.1039/c7ra02155k
文献子类	Article
英文摘要	This paper aims to demonstrate whether graphene nanosheets (GN) with different sizes as conductive additives are able to affect the electrochemical performance of a LiFePO4 (LFP) cathode. The results of electrochemical measurements present that graphene nanosheets (GN) and Super-P (SP) used as conductive additives simultaneously could construct an effective electronic conducting network and achieve excellent electrochemical performance when compared with traditional carbon materials. A LFP with small-size GN shows better specific capacity and rate performance than those with medium-size and large-size GN, and the LFP with large-size GN displays a poor rate performance. The results indicate that the specific capacity and rate performance tend to worsen with the increase of the size of graphene, owing to the length of the lithium ion transport path being prolonged and the ionic conductivity decreasing greatly by the " barrier effect" of graphene.
WOS关键词	LITHIUM-ION BATTERIES ; LI-ION ; RATE CAPABILITY ; COMPOSITES ; NANOSHEETS ; NETWORK
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000399722300022
资助机构	Government of Japan ; National Natural Science Foundation of China(Y6062219BM) ; Qingdao Industrial Energy Storage Technology Institute
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/9617]
专题	青岛生物能源与过程研究所_超电产业综合技术事业部
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266042, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Petr, Coll Mech & Elect Engn, Qingdao 266580, Peoples R China
推荐引用方式 GB/T 7714	Liu, Tao,Sun, Shimei,Zang, Zhao,et al. Effects of graphene with different sizes as conductive additives on the electrochemical performance of a LiFePO4 cathode[J]. RSC ADVANCES,2017,7(34):20882-20887.
APA	Liu, Tao.,Sun, Shimei.,Zang, Zhao.,Li, Xichao.,Sun, Xiaolin.,...&Wu, Jianfei.(2017).Effects of graphene with different sizes as conductive additives on the electrochemical performance of a LiFePO4 cathode.RSC ADVANCES,7(34),20882-20887.
MLA	Liu, Tao,et al."Effects of graphene with different sizes as conductive additives on the electrochemical performance of a LiFePO4 cathode".RSC ADVANCES 7.34(2017):20882-20887.