Polymer electrolyte and lithium polymer battery using the same

Details Polymer electrolyte and lithium polymer battery using the same Polymer electrolyte and lithium polymer battery using the same

1996-09-16

2000-12-26

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

4292181, H01M 1040

Patent

active

061656453

ABSTRACT:
A gelled polymer electrolyte having a high mechanical strength and a high ion conductivity and a lithium polymer battery using the same electrolyte are disclosed. The gelled polymer electrolyte comprises a polymer alloy and an organic electrolyte solution, wherein the polymer alloy includes a polymer which is hardly soluble in the organic electrolyte solution and another polymer which is soluble in the organic electrolyte solution. The lithium polymer battery comprises a negative electrode including metallic lithium, a lithium alloy, carbon or an inorganic compound, and a positive electrode including an active material of a metal oxide capable of intercalating and deintercalating lithium in a reversible manner, such as LiCoO.sub.2, LiNiO.sub.2 or the like, and the gelled polymer electrolyte placed between both electrodes.

REFERENCES:
patent: 5296318 (1994-03-01), Gozdz et al.
patent: 5639573 (1997-06-01), Oliver et al.
patent: 5658685 (1997-08-01), Oliver
Wha-Tzong Whang et al., "Effects of Polymer Matrix and Salt Concentration on the Ionic Conductivity of Plasticized Polymer Electrolytes," Journal of Applied Polymer Science, vol. 56, No. 12, Jun. 20, 1995, pp. 1635-1643, 000541055.

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