Preparation and Properties of DOPO-KH560 Modified Polyethylene Oxide Polymer Solid State Electrolytes

被引：0
|
作者：
Lu J. [1 ]
Jia L. [1 ]
Liu X. [1 ]
Zhang C. [1 ]
机构：
[1] Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2021年 / 37卷 / 03期
关键词：
Ionic conductivity; Lithium-ion batteries; Polymer solid electrolyte; Thermal stability;
D O I：
10.16865/j.cnki.1000-7555.2021.0054
中图分类号：
学科分类号：
摘要：
An excellent silicon/phosphorus double-effect flame retardant, prepared by modifying 3-glycidoxy-propyltrimethoxysilane (KH560) with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), was compounded with polyethylene oxide (PEO) and lithium salts to prepare polymer solid electrolytes, and its influence on the thermal stability and electrochemical performance of PEO based electrolytes was studied. It is found that the conductivity of the DOPO-KH560/PEO/LiTFSI electrolyte is as high as 1.8×10-4 S/cm when the addition amount of DOPO-KH560 is 10% and n(EO):n(Li+) =8:1 and it can maintain the electrochemical stability below 4.9 V. The LiFePO4/Li half battery prepared with the electrolyte can be used stably at 80 ℃, and deliver a reversible specific capacity of 136.5 mA•h/g at 0.2 C after 80 cycles, showing an excellent cycle stability. © 2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：135 / 142and150
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共 18 条
  • [11] Wu C G, Lu M I, Chuang H J., PVdF-HFP/P123 hybrid with mesopores: a new matrix for high-conducting, low-leakage porous polymer electrolyte, Polymer, 46, pp. 5929-5938, (2005)
  • [12] Jia L, Liu X G, Zhang C H., Preparation and properties of novel silicon/phosphorus double-effect flame retardant polymer solid electrolyte, Polymer Materials Science & Engineering, 36, 9, pp. 138-143, (2020)
  • [13] Gao W W, Yu K J, Cao H J, Et al., Study and preparation of DOPO-Aluminum hydroxide composite flame retardant, Modern Chemical Industry, 32, 2, pp. 52-55, (2012)
  • [14] Fan R L., Synthesis and applications of phosphorus-nitrogen containing flame retardant, New Chemical Materials, 7, pp. 9-12, (2008)
  • [15] Xue Z M, Chen C H., Research progress of non-aqueous electrolyte lithium salts for lithium ion batteries, Chemical Progress, 17, 3, pp. 399-405, (2005)
  • [16] Fish D, Khan I M, Smid J., Conductivity of solid complexes of lithium perchlorate with poly{[ω-methoxyhexa(oxyethylene) ethoxy] methylsiloxane}, Die Makromolekulare Chemie, Rapid Communications, 7, pp. 115-120, (1986)
  • [17] Wu Z, Xie Z, Yoshida A, Et al., Nickel phosphate nanorod-enhanced polyethylene oxide-based composite polymer electrolytes for solid-state lithium batteries, Journal of Colloid and Interface Science, 565, pp. 110-118, (2020)
  • [18] Chen W, Liu Y, Liu Y, Et al., Preparation of alginate flame retardant containing P and Si and its flame retardancy in epoxy resin, Journal of Applied Polymer Science, 134, (2017)
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