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Analysis of the relationship between vertical imparity distribution of conductive additive and electrochemical behaviors in lithium ion batteries
Liu, Tao1,2; Li, Xichao1; Sun, Shimei1; Sun, Xiaolin1; Cao, Fengting1; Ohsaka, Takeo3; Wu, Jianfei1
2018-04-10
发表期刊ELECTROCHIMICA ACTA
ISSN0013-4686
卷号269页码:422-428
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.
文章类型Article
关键词Distribution Of Conductive Additive Interfacial Impedances Depolarization Effect Electrochemical Performance Lithium Ion Batteries
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.electacta.2018.03.038
关键词[WOS]LIFEPO4 CATHODE MATERIALS ; CURRENT COLLECTOR ; COMPOSITE CATHODE ; ACETYLENE BLACK ; PERFORMANCE ; CARBON ; GRAPHENE ; CAPACITY ; POLYMER ; ANODE
收录类别SCI
语种英语
WOS研究方向Electrochemistry
项目资助者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
WOS类目Electrochemistry
WOS记录号WOS:000428806700050
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/10822
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
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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.
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