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Preparation and characterization of poly(lithium acrylate-arcylonitrile)/LiClO4-LiNO3-LiBr solid polymer electrolytes

  • Pan Chun-yue 
  • Yuan Yun-lan 
  • Chen Zhen-hua 
  • Xu Xian-hua 
  • Zhang Jian 
Article
  • 108 Downloads

Abstract

Through orthogonal experiment, a new type of LiClO4-LiNO3-LiBr eutectic salt with optimum mole ratio of n(LiClO4):n(LiNO3):n(LiBr) = 1.6:3.8:1.0 was prepared. The poly(lithium acrylate-acrylonitrile)/LiClO4-LiNO3-LiBr solid polymer electrolytes were prepared with poly (lithium acrylate-acrylonitrile) and LiClO4-LiNO3-LiBr eutectic salts. The effect of LiClO4-LiNO3-LiBr eutectic salts content on the conductivity of solid polymer electrolytes was studied by alternating current impedance method, and the structures of eutectic salts and solid polymer electrolytes were characterized by differential thermal analysis, infrared spectroscopy and X-ray diffractometry. The results show that the room temperature conductivity of LiClO4-LiNO3-LiBr eutectic salts reaches 3.11×10−4 S · cm−1. The poly (lithium acrylate-acrylonitrile)/LiClO4-LiNO3-LiBr solid polymer electrolytes possess the highest room temperature conductivity at 70% LiClO4-LiNO3-LiBr eutectic salts content, and exhibit lower glass transition temperature of 75 °C compared with that of poly(lithium acrylate-acrylonitrile) of 105 °C. A complex may be formed in the solid polymer electrolytes from the differential thermal analysis and infrared spectroscopy analysis. X-ray diffraction results show that the poly(lithium acrylate-acrylonitrile) can suppress the crystallization of eutectic salts in this system.

Key words

solid polymer electrolyte conductivity eutectic salt LiClO4 LiNO3 LiBr arcylonitrile 

CLC number

O646 

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References

  1. [1]
    Murata K, Izuchi S, Yoshihisa Y. An overview of the research and development of solid polymer electrolyte batteries[J]. Electrochimica Acta, 2000, 45(8–9): 1501–1508.CrossRefGoogle Scholar
  2. [2]
    Shin J H, Passerini S. Effect of fillers on the electrochemical and interfacial properties of PEO-LiN (SO2CF2CF3)2 polymer electrolytes[J]. Electrochimica Acta, 2004, 49(9–10): 1605–1612.CrossRefGoogle Scholar
  3. [3]
    ZHANG S S, XU K, Jow T R. Li-ion cell with poly (acrylonitrile-methyl methacrylate) based gel polymer electrolyte[J]. Solid State Ionics, 2003, 158(3–4): 375–380.CrossRefGoogle Scholar
  4. [4]
    Silva M M, Barros S C, Smith M J, et al. Study of novel lithium salt-based plasticized polymer electrolytes[J]. J Power Sources, 2002, 111(1): 52–57.CrossRefGoogle Scholar
  5. [5]
    DING L M, SHI J, YANG C Z. Ion-conducting polymers based on modified alternating maleic anhydride copolymer with oligo (oxyethylene) side chains[J]. Synthetic Metals, 1997, 87(2): 157–163.CrossRefGoogle Scholar
  6. [6]
    Angell C A, LIU C, Sanchez E. Rubbery solid electrolytes with dominant cationic transport and high ambient conductivity[J]. Nature, 1993, 362: 137–139.CrossRefGoogle Scholar
  7. [7]
    LIANG Hong-ze, SONG Li-xian, DING Li-ming. The relationship between ionic conductivity and the structure of the new polymer electrolytes[J]. Electrochemistry, 1996, 2(3): 346–349. (in Chinese)Google Scholar
  8. [8]
    ZHAO Ying-xin, LIU Chang-yan. Study on ionic conductivity of a novel solid state electrolyte[J]. Electrochemistry, 1999, 5(2): 94–98. (in Chinese)Google Scholar
  9. [9]
    Ferry A, Edman L, MaFarlane D R, et al. Connectivity, ionic interactions and migration in a fast-ion-conducting polymer-in-salt electrolyte based on poly (acrylonitrile) and LiCF3SO3 [J]. J Appl Phys, 1999, 86(4): 2346–2348.CrossRefGoogle Scholar
  10. [10]
    Forsyth M, SUN J Z, MacFarlane D R. Novel high salt content polymer electrolytes based on High T g polymer[J]. Electrochimica Acta, 2000, 45(8–9): 1249–1254.CrossRefGoogle Scholar
  11. [11]
    WANG Z X, GAO W D, CHEN L Q, et al. Study on roles of polyacrylonitrile in “salt-in-polymer” and “polymer-in-salt” electrolytes[J]. Solid State Ionics, 2002, 154–155: 51–56.CrossRefGoogle Scholar
  12. [12]
    TANG Ai-dong, PAN Chun-yue, ZHAO Xiao-na, et al. Preparation and characterization of new solid electrolyte LiNO3-LiOOCCH3/poly (lithium acrylate) [J]. Acta Polymerica Sinica, 2002, (5): 636–640. (in Chinese)Google Scholar
  13. [13]
    Forsyth M, MacFarlane D R, Hill A J. Glass transition and free volume behaviour of poly(acrylonitrile)/LiCF3SO3 polymer-in-salt electrolytes compared to poly(ether urethane)/LiClO4 solid polymer electrolytes[J]. Electrochimica Acta, 2000, 45(8–9): 1243–1247.CrossRefGoogle Scholar
  14. [14]
    JU Jin-lan, LOU Yong-bing, GU Jin-chao. Interactions between LiClO4 and polymer in dual-phase polymer electrolyte[J]. Polymer Materials Science and Engineering, 2001, 17(2): 88–90. (in Chinese)Google Scholar
  15. [15]
    Choi B K, Kim Y W, Shin H K. Ionic conduction in PEO-PAN blend polymer electrolytes [J]. Elecreochimica Acta, 2000, 45(8–9): 1371–1374.CrossRefGoogle Scholar
  16. [16]
    HOU W H, CHEN C Y, WANG C C, et al. The effect of different lithium salts on conductivity of comb-like polymer electrolyte with chelating functional group[J]. Electrochimica Acta, 2003, 48(6): 679–690.CrossRefGoogle Scholar

Copyright information

© Central South University 2005

Authors and Affiliations

  • Pan Chun-yue 
    • 1
  • Yuan Yun-lan 
    • 1
  • Chen Zhen-hua 
    • 2
  • Xu Xian-hua 
    • 1
  • Zhang Jian 
    • 1
  1. 1.School of Chemistry and Chemical EngineeringCentral South UniversityChangshaChina
  2. 2.School of Materials Science and EngineeringHunan UniversityChangshaChina

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