Molded electrode, method for production thereof, and secondary battery using thereof

Abstract

A molded electrode into one-piece is obtained by hot pressing an electrode material obtained by mixing a polymer active material, a conductivity-enhancing agent and a plasticizer, and a current collector sheet. The electrode structure permits significant freedom when designing a secondary battery which uses this electrode with a high energy density and a high power density.

1 - 10 . (Canceled)  
     
     
         11 . A method for producing a molded electrode, which comprises: 
 hot pressing (a) an electrode material which is a mixture of a polymer active material, a conductivity-enhancing agent and a plasticizer and (b) at least one current collector sheet.    
     
     
         12 . A method for producing a molded electrode, which comprises: 
 (i) hot pressing (a) an electrode material which is a mixture of a polymer active material, a conductivity-enhancing agent and a plasticizer and (b) at least one current collector sheet to form a molded material; and    (ii) conducting one or more times: 
 (ii-1) hot pressing the molded material, the electrode material and a current collector sheet, or/and  
 (ii-2) laminating and hot pressing a plurality of molded materials each produced as above,  
   whereby forming a one-piece molded electrode comprising the electrode material and a plurality of current collector sheets spaced from each other in a thickness direction of the molded electrode.    
     
     
         13 . A method according to  claim 11 , wherein an amount of the plasticizer is 2 to 15% by weight of a total of the electrode material.  
     
     
         14 . A method according to  claim 12 , wherein an amount of the plasticizer is 2 to 15% by weight of a total of the electrode material.  
     
     
         15 . A method according to  claim 11 , wherein, in the hot pressing, a die having an unevenness at a surface thereof is used to form an unevenness at a surface of the molded electrode.  
     
     
         16 . A method according to  claim 12 , wherein, in the hot pressing, a die having an unevenness at a surface thereof is used to form an unevenness at a surface of the molded electrode.  
     
     
         17 - 19 . (Canceled)