4-氯-3-三氟甲基异氰酸苯脂改性电解液

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英文篇名：Modified electrolyte of 4-chloro-3-trifluoromethylisocyanurate 作者：李庆余 ; 薛珂 ; 解雪松 ; 王红强 ; 史洪峰 英文作者：LI Qing-yu;XUE Ke;XIE Xue-song;WANG Hong-qiang;SHI Hong-feng;Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University;Anhui EIKTO Battery Co., Ltd.; 关键词：六氟磷酸锂 ; 4-氯-3-三氟甲基异氰酸苯脂 ; 电解液 ; 掺杂 ; 电解液电导率 英文关键词：lithium hexafluorophosphate;;4-chloro-3-trifluoromethyl isocyanurate;;electrolyte;;doping;;electrolyte conductivity 中文刊名：DYJS 英文刊名：Chinese Journal of Power Sources 机构：广西师范大学化学与药学学院广西低碳能源材料重点实验室;安徽益佳通电池有限公司; 出版日期：2019-02-20 出版单位：电源技术 年：2019 期：v.43;No.341 基金：广西科学研究与技术开发计划(桂科攻1598008-14;桂科AA16380042,20150106-3);; 桂林市第一批科学研究与技术开发(2016010502-2) 语种：中文; 页：DYJS201902013 页数：3 CN：02 ISSN：12-1126/TM 分类号：51-52+63

摘要

在六氟磷酸锂(LiPF6)基电解液中,掺入不同比例的4-氯-3-三氟甲基异氰酸苯脂(S TD),制备得到改性后的锂盐电解液配方,研究了STD作为电解液添加剂对Li PF6基电解液电化学性能的影响。研究结果表明:STD可与Li PF6耦合,有效提高电解液离子电导率,当STD掺杂量为0.3%(体积比)时,有效提高电池首次充放电效率,改善充放电循环稳定性及降低内阻,其首次充放电效率为62.1%,循环100圈后容量保持率为97.6%;未掺杂STD电解液的首次充放电效率为41.5%,100圈后容量保持率为95.9%。
        A modified lithium salt electrolyte solution was prepared by incorporating different proportions of 4-chloro-3-trifluoromethyl isocyanurate(STD) based on lithium hexafluoro phosphate(LiPF_6) electrolyte. The results show that when the amount of STD doping is 0.3%, the new formula of electrolyte can enhance the initial charge and discharge efficiency of the battery while maintaining the physical properties of the LiPF6-based electrolyte. It can also improve the battery cycle stability and reduce the internal resistance of the battery. When the amount of STD doping is 0.3%, the first charge and discharge efficiency is 62.1%, and the capacity retention rate is 97.6% after 100 cycles.The first charge and discharge efficiency of the undoped electrolyte is 41.5%, and the capacity retention rate is 95.9%after 100 cycles.

引文

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