Patent ID: 8142929

Claim:
A non-aqueous electrolyte battery comprising a positive electrode comprising a positive electrode active material layer containing at least a positive electrode active material, a binder and a polymer; a negative electrode and a non-aqueous electrolyte; wherein the content of the polymer in the positive electrode active material layer is in the range of from 0.01 to 0.5% by weight; and the polymer has a block chain A composed of a random copolymer containing a repeating unit (I) represented by the following formula (I) and a repeating unit (II) represented by the following formula (II) and a block chain B containing a repeating unit (III) represented by the following formula (III): wherein R 1 , R 2 and R 3 each independently represents a hydrogen atom or a hydrocarbon group having from 1 to 10 carbon atoms; R 1 and R 3 may be joined together to form a ring; R 4a and R 4b each independently represents a hydrogen atom or a methyl group; R 5 represents a hydrogen atom, a hydrocarbon group, an acyl group or a silyl group; m represents an integer of from 1 to 100; and when m is 2 or more, R 4a s and R 4b s may be the same or different, respectively, wherein R 6 and R 8 each independently represents a hydrogen atom or a hydrocarbon group having from 1 to 10 carbon atoms; R 6 and R 8 may be joined together to form a ring; R 7 represents a hydrogen atom, a hydrocarbon group having from 1 to 10 carbon atoms, a hydroxyl group, a hydrocarbon oxy group, a carboxyl group, an acid anhydride group, an amino group, an ester group, or an organic group having at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group, an epoxy group, an acid anhydride group and an amino group; and R 9 represents an organic group having at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group, an epoxy group, an acid anhydride group and an amino group, and wherein R 10 , R 11 , R 12 each independently represents a hydrogen atom or a hydrocarbon group having from 1 to 10 carbon atoms; and R 13 represents an aryl group or a heteroaryl group.