Solid polymer electrolyte and method of manufacture thereof

Details Solid polymer electrolyte and method of manufacture thereof Solid polymer electrolyte and method of manufacture thereof

1995-06-06

1997-03-11

Lieberman, Paul

Compositions

Electrically conductive or emissive compositions

252518, 252 622, 205923, 205928, 429 33, 429 46, 429192, H01B 100, H01B 120, H01G 915

Patent

active

056097956

ABSTRACT:
The present invention presents a solid polymer electrolyte consisting of a multiphase polymer matrix and an electrolyte solution. The polymer matrix consists of a highly polar polymeric (HPP) phase impregnated with the electrolyte solution to form ion conducting channels, and a less polar polymeric (LPP) phase, constituting the support structure. Further, the invented solid polymer electrolyte may also include a second ion conducting channels, forming a multiphase microstructure in which the electrolyte solution is present around the LPP particles as a fine mesh-like network. The invention also presents two kinds of method for making such a solid polymer electrolyte. The first includes the steps of: making a multiphase polymer matrix; and impregnating the polymer matrix with an electrolyte solution. The second includes the steps of: making a multiphase polymer matrix containing an electrolyte in advance; and impregnating the multiphase polymer matrix containing the electrolyte with a solvent to dissolve the electrolyte or electrolyte solution in the polymer matrix.

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K.M. Abraham et al "Li.sup.+ -Conductive Solid Polymer Elect. with Liquid-like Conductivity" J. Electrochem Soc. vol. 137 #5 May 1990, pp. 1656-1658.
Masayoshi Watanabe et al., "Ionic Conductivity of Hybric Films Composed of Polyacrylonitrile, Ethylene Carbonate, and LiClO.sub.4 ", Journal of Polymer Science, Polymer Physics Edition, vol. 21, 1983, pp. 939-948. No Month Available.
R. Spindler et al., "Synthesis, NMR Characterization, and Electrical Properties of Siloxane-Based Polymer Electolytes", Macromolecules, vol. 21, No. 3, 1988, pp. 648-653. No Month Available.

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