导电剂对LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2全电池的影响

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英文篇名：Effect of conducting agent on LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2 batteries 作者：邱世涛 ; 李婷婷 ; 程波明 ; 王春香 ; 钟盛文 英文作者：QIU Shi-tao;LI Ting-ting;CHENG Bo-ming;WANG Chun-xiang;ZHONG Sheng-wen;School of Materials Science and Engineering,Jiangxi University of Science and Technology;Jiangxi Key Laboratory of Power Battery and Materials,Jiangxi University of Science and Technology; 关键词：导电剂 ; LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2 ; 内阻 ; 碳纳米管 ; KS-6 ; SP 英文关键词：conducting agent;;LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2;;internal resistance;;carbon nanotubes(CNTs);;KS-6;;SP 中文刊名：DYJS 英文刊名：Chinese Journal of Power Sources 机构：江西理工大学材料科学与工程学院;江西理工大学江西省动力电池及其材料重点实验室; 出版日期：2019-06-20 出版单位：电源技术 年：2019 期：v.43;No.345 语种：中文; 页：DYJS201906011 页数：4 CN：06 ISSN：12-1126/TM 分类号：37-40

摘要

采用LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2正极材料,研究了SP与KS-6复合,以及SP、CNTs、KS-6三种导电剂按一定比例复合对其全电池电化学性能和内阻的影响。结果表明:添加KS-6能与SP互补协同,改善电池性能,降低内阻;SP∶KS-6配比为5∶5时,容量保持最好,循环200次,放电比容量159.1 mAh/g,内阻值和内阻平均增长速度最小。添加CNTs后,由于CNTs的特殊空间结构,具有保液能力及高电导率性能,电池性能更佳;[SP+CNTs(8∶2)]+KS-6(5∶5)时,循环200次,放电比容量174.9 mAh/g,内阻值43.1 m W,内阻平均增长速度0.052 m W/次。
        Using LiNi_(0.8) Co_(0.1) Mn_(0.1) O_2 as composite cathode materials, it was investigated the effects of SP and KS-6 composite and SP, CNTs and KS-6 composite as conductive agent on the electrochemical performance and internal resistance of lithium ion batteries. The results showed that adding KS-6 could synergize with SP to improve battery performance and reduce internal resistance. When SP∶KS-6=5∶5, the capacity is the best, 200 cycles, the discharge capacity is 159.1 mAh/g, internal resistance and internal resistance average growth rate is the smallest.Adding CNTs, due to the special spatial structure of CNTs, with liquid retention capacity and high conductivity performance, the battery performance is better; when [SP + CNTs(8∶2)] + KS-6(5∶5), the discharge capacity was174.9 mAh/g for 200 cycles, the internal resistance was 43.1 mW, and the average internal resistance was 0.052 mW/time.

引文

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