Electrode materials with high surface conductivity

Abstract

The present invention concerns electrode materials capable of redox reactions by electron and alkali-ion exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, supercapacitors and light modulating systems of the electrochromic type.

1 - 38 . (canceled) 
     
     
         39 . An electrode material comprising:
 a particle of electroactive material comprising at least one transition element and an alkali metal; and   a solid polymer comprising between 60 molar % and 100 molar % carbon (C) and having an electronic conductivity of at least 10 −6  S/cm, wherein the solid polymer is coated on the surface of the electroactive material.   
     
     
         40 . The electrode material of  claim 39 , wherein the solid polymer has an electronic conductivity of at least 10 −4  S/cm. 
     
     
         41 . The electrode material of  claim 39 , wherein the solid polymer further comprises hydrogen (H), oxygen (O), or nitrogen (N). 
     
     
         42 . The electrode material of  claim 39 , wherein the electrode material is in the form of an electrode material particle. 
     
     
         43 . The electrode material of  claim 39 , wherein the electrode material particle comprises between 10% to 70% solid particle by electrode material particle volume. 
     
     
         44 . The electrode material of  claim 43 , wherein the alkali metal comprises Li, Na, or K. 
     
     
         45 . The electrode material of  claim 39 , wherein the electrode material further comprises an additional conductive carbon material in the form of a fine power or fiber. 
     
     
         46 . The electrode material of  claim 45 , wherein the additional conductive carbon material comprises carbon black or carbon fibers. 
     
     
         47 . The electrode material of  claim 45 , wherein the electrode material is in the form of an electrode material particle comprising between 0.5% to 10% conductive carbon material by electrode material particle volume. 
     
     
         48 . A secondary battery comprising and electrode material comprising:
 a particle of electroactive material comprising at least one transition element and an alkali metal; and   a solid polymer comprising between 60 molar % and 100 molar % carbon (C) and having an electronic conductivity of at least 10 −6  S/cm, wherein the solid polymer is coated on the surface of the electroactive material.   
     
     
         49 . The secondary battery of  claim 48 , wherein the solid polymer has an electronic conductivity of at least 10 −4  S/cm. 
     
     
         50 . The secondary battery of  claim 48 , wherein the solid polymer further comprises hydrogen (H), oxygen (O), or nitrogen (N). 
     
     
         51 . The secondary battery of  claim 48 , wherein the electrode material is in the form of an electrode material particle. 
     
     
         52 . The secondary battery of  claim 48 , wherein the electrode material particle comprises between 10% to 70% solid particle by electrode material particle volume. 
     
     
         53 . The secondary battery of  claim 52 , wherein the alkali metal comprises Li, Na, or K. 
     
     
         54 . The secondary battery of  claim 48 , wherein the electrode material further comprises an additional conductive carbon material in the form of a fine power or fiber. 
     
     
         55 . The secondary battery of  claim 54 , wherein the additional conductive carbon material comprises carbon black or carbon fibers. 
     
     
         56 . The secondary battery of  claim 54 , wherein the electrode material is in the form of an electrode material particle comprising between 0.5% to 10% conductive carbon material by electrode material particle volume. 
     
     
         57 . The secondary battery of  claim 48 , further comprising the electrode material deposited on and aluminum (Al) a current collector. 
     
     
         58 . The secondary battery of  claim 48 , further comprising a polymer electrolyte.