Method and apparatus for making positive electrode films for polymer batteries

a technology of positive electrode material and polymer battery, which is applied in the field of polymer batteries, can solve the problems of inefficient process for mass production of cathode material, reduced density, and difficulty in extruding positive electrode material into thin films, and achieves high solid conten
US20050236732A1Inactive Publication Date: 2005-10-27BATHIUM CANADA
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
BATHIUM CANADA
Publication Date
2005-10-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method and an apparatus for manufacturing through an extruder a composite positive electrode film having a thickness of less than 50 μm and having a high solid content.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority from U.S. provisional application No. 60 / 535,828 filed on Jan. 13, 2004.FIELD OF THE INVENTION

[0002] The present invention relates generally to polymer batteries and, more specifically, to a method and an apparatus for making positive electrode films for polymer batteries. BACKGROUND

[0003] Rechargeable batteries manufactured from laminates of polymer electrolytes and sheet-like electrodes display many advantages over conventional liquid electrolyte batteries. These advantages include lower overall battery weight, high power density, high specific energy, and longer service life. In addition, they are more environmentally friendly since the danger of spilling toxic liquid into the environment is eliminated.

[0004] Polymer battery components generally include positive electrodes (also referred to as cathodes), negative electrodes (also referred to as anodes), and an insulating material capable of p...

Claims

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