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US 7,732,099 B2Granted
Composite polymer electrolyte composition
AssigneeTrekion Co., Ltd.
InventorsNaoya Ogata, Hiroshi Kagawa, Makiko Sada
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AssigneeTrekion Co., Ltd.
InventorsNaoya Ogata, Hiroshi Kagawa, Makiko Sada
Estimating the term…
A totally solid polymer electrolyte composition with high ionic conductivity and enhanced mechanical properties is provided. This electrolyte composition is produced by polymerizing a monomer composition comprising a molten quaternary ammonium salt having a polymerizable functional group introduced therein and a charge transfer ion source in the presence of a polymeric reinforcing material. The polymeric reinforcing material can be formed into a composite of polymer blend morphology by dissolving the monomer composition and the reinforcing material in an appropriate organic solvent and polymerizing the solution. Alternatively, the composite can be obtained by impregnating a porous sheet or film as the reinforcing material with the monomer composition and effecting polymerization. An electrolyte for lithium ion battery can be obtained by selecting a lithium salt as the charge transfer ion source; an electrolyte for fuel cell by selecting a proton donor; and an electrolyte for dye sensitized solar cell by selecting a redox ion pair. A polymer electrolyte composition not containing the charge transfer ion source is also useful as an electrolyte for electrolytic capacitor.
A composite polymer electrolyte composition comprising a product produced by polymerizing in situ a monomer composition comprising (a) molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure consisting of a quaternary ammonium cation and a fluorine-containing anion, and (b) charge transfer ion source comprising a lithium salt of a lithium ion and a fluorine-containing anion,
A composite polymer electrolyte composition comprising a polymer blend of (a) a polymerization product of a monomer having a polymerizable functional group and a quaternary ammonium salt structure consisting of a quaternary ammonium cation and a fluorine-containing anion, and (b) an electrochemically inert polymer selected from the group consisting of polyvinylidene fluoride and a copolymer thereof, said composite polymer electrolyte composition further comprising a charge transfer ion source comprising a lithium salt of a lithium ion and a fluorine-containing anion.
Dependencies are inferred from the claim text.