Analysis of the relationship between vertical imparity distribution of conductive additive and electrochemical behaviors in lithium ion batteries

doi:10.1016/j.electacta.2018.03.038

	Analysis of the relationship between vertical imparity distribution of conductive additive and electrochemical behaviors in lithium ion batteries
	Liu, Tao 1,2; Li, Xichao 1; Sun, Shimei 1; Sun, Xiaolin 1; Cao, Fengting 1; Ohsaka, Takeo 3; Wu, Jianfei 1
刊名	ELECTROCHIMICA ACTA
	2018-04-10
卷号	269 页码:422-428
关键词	Distribution Of Conductive Additive Interfacial Impedances Depolarization Effect Electrochemical Performance Lithium Ion Batteries
ISSN号	0013-4686
DOI	10.1016/j.electacta.2018.03.038
文献子类	Article
英文摘要	In this work, double layered LiFePO4 materials with different content of conductive carbon black are proposed for evaluating systematically the influence of imparity distribution of conductive additive on the electrochemical behaviors of cathode material for lithium ion batteries. Their polarization effects and electrochemical performances were investigated and compared in detail. It was found that there exists a simple empirical rule correlating the distribution of the conductive additive and the depolarization effect under the premise that the total content of the conductive additive is kept constant. The electrochemical performance of LiFePO4/C electrode tends to get better with increasing the conductive additive loading in the lower layer. This can be attributed to that the more conductive additive content in the lower layer could provide more available paths for electronic transmission, and markedly decrease the interfacial impedance between LiFePO4/C cathode material and current collector, thus improving the ability of collecting electron and maintaining a reliable electron transport system, especially under high current densities. This finding can enlighten us to design a more rational optimization of the electrode by controlling the distribution of conductive additive in the cathode material for high performance lithium ion batteries. (c) 2018 Elsevier Ltd. All rights reserved.
WOS关键词	LIFEPO4 CATHODE MATERIALS ; CURRENT COLLECTOR ; COMPOSITE CATHODE ; ACETYLENE BLACK ; PERFORMANCE ; CARBON ; GRAPHENE ; CAPACITY ; POLYMER ; ANODE
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000428806700050
资助机构	National Natural Science Foundation of China(21673267) ; Shandong Provincial Natural Science Foundation(ZR2015QZ01) ; Chinese Academy of Sciences ; Qingdao Postdoctoral Application Research Project ; Qingdao Industrial Energy Storage Technology Institute
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/10821]
专题	中国科学院青岛生物能源与过程研究所
通讯作者	Wu, Jianfei
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Kanagawa Univ, Res Inst Engn, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan
推荐引用方式 GB/T 7714	Liu, Tao,Li, Xichao,Sun, Shimei,et al. Analysis of the relationship between vertical imparity distribution of conductive additive and electrochemical behaviors in lithium ion batteries[J]. ELECTROCHIMICA ACTA,2018,269:422-428.
APA	Liu, Tao.,Li, Xichao.,Sun, Shimei.,Sun, Xiaolin.,Cao, Fengting.,...&Wu, Jianfei.(2018).Analysis of the relationship between vertical imparity distribution of conductive additive and electrochemical behaviors in lithium ion batteries.ELECTROCHIMICA ACTA,269,422-428.
MLA	Liu, Tao,et al."Analysis of the relationship between vertical imparity distribution of conductive additive and electrochemical behaviors in lithium ion batteries".ELECTROCHIMICA ACTA 269(2018):422-428.