3, 4-乙烯二氧噻吩单体用作锂离子电池安全性改善添加剂的研究

doi:10.13208/j.electrochem.151244

电化学（中英文） ›› 2016, Vol. 22 ›› Issue (3): 271-277. doi: 10.13208/j.electrochem.151244

• 电化学获奖人优秀论文专辑 • 上一篇下一篇

3, 4-乙烯二氧噻吩单体用作锂离子电池安全性改善添加剂的研究

吉维肖，王凤，钱江锋，曹余良，艾新平*，杨汉西

化学电源材料与技术湖北省重点实验室，武汉大学化学与分子科学学院,武汉,430072

收稿日期:2015-12-29 修回日期:2016-01-19 出版日期:2016-06-28 发布日期:2016-01-25
通讯作者: 艾新平 E-mail:xpai@whu.edu.cn
作者简介:艾新平
基金资助:
国家自然科学基金项目（No. 21373154）资助

3, 4-Ethylenedioxythiophene Monomer as Safety-Enhancing Additive for Lithium Ion Batteries

JI Wei-xiao, WANG Feng, QIAN Jiang-feng, CAO Yu-liang, AI Xin-ping*, YANG Han-xi

Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China

Received:2015-12-29 Revised:2016-01-19 Published:2016-06-28 Online:2016-01-25
Contact: AI Xin-ping E-mail:xpai@whu.edu.cn
About author:AI Xin-ping

摘要/Abstract

摘要：

安全性是制约锂离子电池向电动汽车领域应用拓展的主要障碍. 本工作提出了一种能够有效改善锂离子电池安全性的电解液添加剂-3,4-乙烯二氧噻吩单体（EDOT），研究了其在有机电解液中的电氧化聚合行为，以及对LiCoO₂电极高温热行为和电池安全性、电化学性能的影响. 循环伏安（CV）和透射电镜（TEM）表征结果表明，单体添加剂能够在电池充电过程发生电氧化聚合，在正极表面形成一层聚（3,4-乙烯二氧噻吩）（PEDOT）导电聚合物膜；差示扫描量热（DSC）分析结果显示，PEDOT隔离了电解液与正极表面的直接接触，减少了过热条件下电解液在正极表面的分解放热. 安全性测试结果表明，在电解液中仅添加0.1%的EDOT单体，即可将电池在150 ^oC高温热冲击下发生热失控的时间推迟13.8分钟. 电化学性能测试结果表明，聚合产物良好的电子导电性能有效改善正极的电子传导能力，在一定程度上提高电池的倍率性能和循环稳定性，而容量、低温性能等基本不受影响，展示出良好的应用前景.

关键词: 锂离子电池, 安全性添加剂, 电氧化聚合, 导电聚合物, 3, 4-乙烯二氧噻吩

Abstract:

Safety concern is a major obstacle hindering the wide applications of large-capacity lithium ion batteries (LIBs) in electric vehicles. In this paper, a polymerizable monomer of 3, 4-ethylenedioxythiophene (EDOT) was proposed and tested as an electrolyte additive for enhancing the safety of LIBs. The electro-oxidative polymerization behaviors and influence of PEDOT additive on the thermal behavior of LiCoO₂ cathode, as well as the safety performance and electrochemical properties of LiCoO₂-based LIBs were investigated. The results from cyclic voltammetry (CV) and transmission electron microscope (TEM) characterizations indicated that the monomer additive can be electro-oxidatively polymerized to form a dense and uniform conductive polymer film (PEDOT) on the cathode surface during the first battery charging. The analysis results from differential scanning calorimetry (DSC) demonstrated that the heat released from the thermal decomposition of liquid electrolyte on the cathode surface was significantly reduced by 26 % due to the PEDOT barrier layer, which prevents electrolyte from direct contact with highly oxidative cathode. The safety tests revealed that even with a monomer content of only 0.1 wt% in liquid electrolyte, the thermal runaway onset time of LiCoO₂-based pouch full cells could be delayed for 13.8 min under high temperature impact at 150 ^oC, representing a significantly enhanced safety. In addition, it is also found that the use of EDOT monomer as an electrolyte additive did not produce any negative influence on the normal charge-discharge performance of LIBs, showing a prospect for battery application.

Key words: safety additive, lithium ion battery, electro-oxidative polymerization, conducting polymer, 3, 4-ethylenedioxythiophene monomer.

中图分类号:

O646

吉维肖，王凤，钱江锋，曹余良，艾新平，杨汉西. 3, 4-乙烯二氧噻吩单体用作锂离子电池安全性改善添加剂的研究[J]. 电化学（中英文）, 2016, 22(3): 271-277.

JI Wei-xiao, WANG Feng, QIAN Jiang-feng, CAO Yu-liang, AI Xin-ping, YANG Han-xi. 3, 4-Ethylenedioxythiophene Monomer as Safety-Enhancing Additive for Lithium Ion Batteries[J]. Journal of Electrochemistry, 2016, 22(3): 271-277.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.151244

https://electrochem.xmu.edu.cn/CN/Y2016/V22/I3/271

参考文献

[1] G. Crabtree. Perspective: The energy-storage revolution[J]. Nature, 2015, 526(7575): 92-92.

[2] M. Armand, J. M. Tarascon. Building better batteries[J]. Nature, 2008, 451(7179): 652-657.

[3] J. M. Tarascon, M. Armand. Issues and challenges facing rechargeable lithium batteries[J]. Nature, 2001, 414(6861): 359-367.

[4] K. T. Lee, S. Jeong, J. Cho. Roles of Surface Chemistry on Safety and Electrochemistry in Lithium Ion Batteries[J]. Accounts of Chemical Research, 2013, 46(5): 1161-1170.

[5] Q. Wang, P. Ping, X. Zhao, et al. Thermal runaway caused fire and explosion of lithium ion battery[J]. Journal of Power Sources, 2012, 208: 210-224.

[6] X. Feng, M. Fang, X. He, et al. Thermal runaway features of large format prismatic lithium ion battery using extended volume accelerating rate calorimetry[J]. Journal of Power Sources, 2014, 255: 294-301.

[7] Yamaki J, Baba Y, Katayama N, et al. Thermal stability of electrolytes with Li_xCoO₂ cathode or lithiated carbon anode[J]. Journal of power sources, 2003, 119: 789-793.

[8] Spotnitz R, Franklin J. Abuse behavior of high-power, lithium-ion cells[J]. Journal of Power Sources, 2003, 113(1): 81-100.

[9] M. Baginska, B. J. Blaiszik, R. J. Merriman, et al. Autonomic Shutdown of Lithium-Ion Batteries Using Thermoresponsive Microspheres[J]. Advanced Energy Materials, 2012, 2(5): 532-535.

[10]W. Ji, B. Jiang, F. Ai, et al. Temperature-responsive microspheres-coated separator for thermal shutdown protection of lithium ion batteries[J]. RSC Advances, 2015, 5(1): 172-176.

[11] H. Zhong, C. Kong, H. Zhan, et al. Safe positive temperature coefficient composite cathode for lithium ion battery[J]. Journal of Power Sources, 2012, 216: 273-280

[12]H. Zhang, J. Pang, X. Ai, et al. Poly(3-butylthiophene)-based positive-temperature-coefficient electrodes for safer lithium-ion batteries[J].Electrochimica Acta, 2016, 187, 173-178.

[13]C.-C. Lin, H.-C. Wu, J.-P. Pan, et al. Investigation on suppressed thermal runaway of Li-ion battery by hyper-branched polymer coated on cathode[J]. Electrochimica Acta, 2013, 101, 11-17.

[15]A. Abouimrane, S. A. Odom, H. Tavassol, et al. 3-Hexylthiophene as a stabilizing additive for high voltage cathodes in lithium-ion batteries[J]. Journal of the Electrochemical Society, 2013, 160(2): A268-A271.

[1]	赵刚, 龚正良, 李益孝, 杨勇. 氧化钨和磷钨酸对LiNi_0.96Co_0.02Mn_0.02O₂材料的表面包覆改性研究[J]. 电化学（中英文）, 2023, 29(10): 2204281-.
[2]	陈思, 郑淞生, 郑雷铭, 张叶涵, 王兆林. 水热法制备锂电池Si@C负极材料的工艺优化研究[J]. 电化学（中英文）, 2022, 28(8): 2112221-.
[3]	王京玥, 王睿, 王诗琦, 王立帆, 詹纯. 一步固相法合成锂离子电池高镍层状正极材料[J]. 电化学（中英文）, 2022, 28(8): 2112131-.
[4]	谯渭川, 李芳儒, 肖瑾林, 屈丽娟, 赵晓, 张梦, 庞春雷, 李子坤, 任建国, 贺雪琴. 硅氧材料的膨胀性能研究和改善[J]. 电化学（中英文）, 2022, 28(5): 2108121-.
[5]	王加义, 郭胜楠, 王新, 谷林, 苏东. 锂离子电池高镍层状氧化物正极结构失效机制[J]. 电化学（中英文）, 2022, 28(2): 2108431-.
[6]	郭瑞琪, 吴锋, 王欣然, 白莹, 吴川. 多电子反应材料推动高能量密度电池发展：材料与体系创新[J]. 电化学（中英文）, 2022, 28(12): 2219011-.
[7]	朱振威, 邱景义, 王莉, 曹高萍, 何向明, 王京, 张浩. 人工智能在锂离子电池研发中的应用[J]. 电化学（中英文）, 2022, 28(12): 2219003-.
[8]	侯廷政, 陈翔, 蒋璐, 唐城. 当前和下一代锂离子电池电解液的原子尺度微观认识和研究进展[J]. 电化学（中英文）, 2022, 28(11): 2219007-.
[9]	李丹丹, 纪翔宇, 陈明, 杨燕茹, 王晓东, 冯光. 低聚离子液体的体相与界面及其电化学储能应用[J]. 电化学（中英文）, 2022, 28(11): 2219002-.
[10]	骆晨旭, 师晨光, 余志远, 黄令, 孙世刚. 富锂锰基层状正极材料的合成及其首周过充下的结构演化[J]. 电化学（中英文）, 2022, 28(1): 2006131-.
[11]	蔡雪凡, 孙升. 多孔电极电池的循环伏安法模拟[J]. 电化学（中英文）, 2021, 27(6): 646-657.
[12]	彭依, 张伟, 左防震, 吕浩莹, 洪凯骏. 二硒化钼纳米球储锂和储镁的性能和机理研究[J]. 电化学（中英文）, 2021, 27(4): 456-464.
[13]	周莉, 吴勰, 薛照明. 热塑性聚氨酯基聚合物电解质的制备与表征[J]. 电化学（中英文）, 2021, 27(4): 439-448.
[14]	李丽娟, 朱振东, 代娟, 王蓉蓉, 彭文. 锂离子电池正极材料Li[Ni_xCo_yMn_z]O₂ (x = 0.6, 0.85)相变对比[J]. 电化学（中英文）, 2021, 27(4): 405-412.
[15]	梁振浪, 杨耀, 李豪, 刘丽英, 施志聪. 基于不同前驱体制备的硬碳负极材料的储锂性能[J]. 电化学（中英文）, 2021, 27(2): 177-184.

3, 4-乙烯二氧噻吩单体用作锂离子电池安全性改善添加剂的研究

3, 4-Ethylenedioxythiophene Monomer as Safety-Enhancing Additive for Lithium Ion Batteries

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics