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

doi:10.1039/c7ra02155k

QIBEBT-IR > 先进储能材料与技术研究组

	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
	2017
发表期刊	RSC ADVANCES
卷号	7 期号:34 页码:20882-20887
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.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c7ra02155k
关键词[WOS]	LITHIUM-ION BATTERIES ; LI-ION ; RATE CAPABILITY ; COMPOSITES ; NANOSHEETS ; NETWORK
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
项目资助者	Government of Japan ; National Natural Science Foundation of China(Y6062219BM) ; Qingdao Industrial Energy Storage Technology Institute
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000399722300022
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/9617
专题	先进储能材料与技术研究组
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.