Battery and electrode

Abstract

A positive electrode includes: a salt represented by the following formula (1) on the surface of an active material contained in a positive electrode active material layer provided on a positive electrode collector, or at least on the surface of the positive electrode active material layer wherein R represents a hydrocarbon group which may have an unsaturated bond, a group obtained by halogenating or hydroxylating this hydrocarbon group, or a hydrogen group; R1 and R2 each independently represents an unsaturated bond, a hydrocarbon group which may have N or O, R1 and R2 may be bonded to each other to form a ring, in which the ring may further contain N or O, or a hydrogen group; Aa− represents an acid anion capable of being bonded to at least any one of R, R1, R2 and the ring; Mx− represents a metal ion capable of forming a salt together with Aa−; and a, b, x and y each represents an integer of 1 or more.

Dependencies are inferred from the claim text.