Patent ID: 6168880
Filing Date: 2001-01-02
Classification: H01M,Y02E,Y02P

Abstract:
An electrochemical device comprising: a first electrode layer having an electrochemical material which is a first electrode material comprising a first active material mixed with copolymers; a separator layer having a first surface contacting the first electrode layer, the electrode separator layer having an electrochemical material which is a separator material including said copolymers, wherein said first electrode material is in direct contact with said separator material of said first surface; a second electrode layer contacting a second surface of said separator, said second electrode layer having an electrochemical material which is a second electrode material comprising a second active material mixed with said copolymers; polymer mesh within at least one of said layers, such that said polymer mesh is encompassed by said electrochemical material of said layer, and wherein said polymer mesh comprises holes and wherein said electrochemical material of said layer is positioned within said holes; and wherein said first and second electrode layers and said separator layer are laminated together to form a continuous path of said copolymer from layer to layer, said mesh is made of a polymer material substantially different from said copolymer of said layers, and said mesh is further characterized by melting during battery thermal runaway.