Solid state electrolyte rechargeable battery in no use of separator

Abstract

By providing this rechargeable battery, the solid electrolyte rechargeable battery without separator which has a descending effect of particle interface resistance between a positive and negative active materials in case of using conductive polymer solid electrolyte, a thin film cell, a less dependence on the temperature and excellent safety in case of happening short circuit can be obtained.

1 . Solid state electrolyte rechargeable battery containing ion transfer sources in no use of separator comprising a positive electrode/a conductive polymer solid state electrolyte layer/a negative electrode in which the solid state electrolyte layer is a composition comprising an inorganic solid electrolyte and a polymer electrolyte composition wherein the polymer electrolyte composition is selected from the group consisting of a polymer electrolyte composition (X 1 ) obtained by graft polymerizing a molten salt monomer having a polymerizable functional group and having an onium cation and an anion containing a fluorine with a fluoro polymer, and a polymer electrolyte composition comprising (X 1 ) and at least one kind selected from the following (X 2 ) and (X 3 ),
 X 2 : a molten salt having an onium cation and an anion containing a halogen, or a molten salt monomer having a polymerizable functional group and having an onium cation,   X 3 : a polymer or copolymer of a molten salt monomer having a polymerizable functional group and having an onium cation.   
     
     
         2 . Solid state electrolyte rechargeable battery in no use of separator as claimed in  claim 1 , wherein the inorganic solid electrolyte is at least one kind selected from the group consisting of Garnet material, NASICON type crystal structure, perovskite-type material and sulfide material. 
     
     
         3 . Solid state electrolyte rechargeable battery in no use of separator as claimed in  claim 1 , wherein the inorganic solid electrolyte is Garnet. 
     
     
         4 . Solid state electrolyte rechargeable battery in no use of separator as claimed in  claim 1 , wherein the anion containing a halogen is an anion containing a fluorine. 
     
     
         5 . Solid state electrolyte rechargeable battery in no use of separator as claimed in  claim 1 , wherein the positive electrolyte/the conductive polymer electrolyte/the negative electrolyte further contains a polyether polymer. 
     
     
         6 . Solid state solid electrolyte rechargeable battery in no use of separator as claimed in  claim 1 , wherein the positive electrode is at least one kind selected from the group consisting Li x Me y O z , LiNixMe y O z , LiCo w Ni x Me y O z  and LiMe x P y O z  (w, x, y, z is optional positive number; Me is Fe, Co, Ni, Al or Mn) and the negative electrode is at last one kind selected from the group consisting of a natural spheroidal graphite, an artificial hard graphite and a lithium metal foil.