Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (12): 1922-1926.doi: 10.3866/PKU.WHXB20071217

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Preparation and Characterization of a Novel Kind of Polymer Electrolyte Composite Membrane for Lithium-Ion Battery

FENG Hua-Jun; CHEN Yuan;DAI Ke-Hua; SONG Zhao-Shuang; MA Jian-Wei; QI Lu   

  1. New Energy Materials and Technology Laboratory, Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China; CITIC Guoan Mengguli New Energy Technology Co., Ltd., Beijing 102200, P. R. China
  • Received:2007-09-17 Revised:2007-09-29 Published:2007-11-30
  • Contact: QI Lu

Abstract: A novel kind of PVDF-HFP(polyvinylidene fluoride-hexafluoropro-pylene)-based polymer electrolyte composite membrane for lithium-ion battery was prepared. Inorganic TiO2 nanopowders in composite were dealt with solid super-acidization. Series of characterizations were carried on, such as surface acid strength H0, XRD analysis, electrolyte absorbency, and electrochemical impedance spectroscopy. PE non-woven fabrics were introduced as the reinforced materials, which were soaked to prepare the composite membranes, and then assembled to get the resulted lithium-ion battery. Performance tests indicated that the lithium-ion battery had good electrochemical performance.

Key words: PVDF-HFP, Polymer electrolyte composite membranes, Solid superacid, Non-woven fabrics, Lithium-ion battery


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