Battery and electrode

1. An electrode comprising:

an electrode collector and

an electrode active material layer,

wherein a film containing a salt represented by the following formula (I) is provided on the electrode active material layer:

R1A n M x   (I)

wherein

R1 is an n-valent hydrocarbon group containing at least one structure selected from the group consisting of HS—, —S—, —S—S—, —S—C(═S)—S—, —N—C(═S)—S—, —C(═O)—S—, —O—C(═O)—S—, —S—C(═O)—S— and —S—;

n represents an integer of from 1 to 4;

A represents the anion selected from the group consisting of CO 2 − and SO 3 − ;

M represents a metal ion selected from the group consisting of an alkali metal ion and an alkaline earth metal ion; and

x represents an integer of 1 to 10.

2. The electrode according to claim 1 , wherein the film is provided on a first surface of the electrode active material layer opposite a second surface in contact with the electrode collector.

3. A battery comprising:

a positive electrode having a positive electrode collector and a positive electrode active material layer;

a negative electrode having a negative electrode collector and a negative electrode active material layer; and

an electrolytic solution,

wherein a film is provided on at least one of the positive electrode active material layer and the negative electrode active material layer, the film containing a salt represented by the following formula (I):

R1A n M x   (I)

wherein

R1 is an n-valent hydrocarbon group containing at least one structure selected from the group consisting of HS—, —S—, —S—S—, —S—C(═S)—S—, —N—C(═S)—S—, —C(═O)—S—, —O—C(═O)—S—, —S—C(═O)—S— and —S—;

n represents an integer of from 1 to 4;

A represents an anion selected from the group consisting of CO 2 − and SO 3 − ;

M represents a metal ion selected from the group consisting of an alkali metal ion and an alkaline earth metal ion; and

x represents an integer of 1 to 10.

4. The battery according to claim 3 , wherein

the negative electrode active material layer contains a negative electrode active material containing at least one member of a simple substance, an alloy or a compound of silicon and a simple substance, an alloy or a compound of tin.

5. The battery according to claim 3 , wherein

the negative electrode active material layer has plural negative electrode active material particles and an oxide-containing film for coating the surface of the negative electrode active material particle.

6. The battery according to claim 3 , wherein

the negative electrode active material particle has a multilayered structure within the particle thereof, and the negative electrode active material layer has a metal material in a gap between the negative electrode active material particles.

7. The battery according to claim 6 , wherein the metal material is at least one member selected from the group consisting of iron, cobalt, nickel, zinc and copper.

8. The battery according to claim 3 , wherein

the electrolytic solution contains a solvent containing at least one member of a chain carbonic ester containing a halogen, which is represented by the following formula (A), and a cyclic carbonic ester containing a halogen, which is represented by the following formula (B):

wherein, R21 to R26 each represents a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, provided that at least one of R21 to R26 is a halogen group or a halogenated alkyl group; and

wherein R27 to R30 each represents a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, provided that at least one of R27 to R30 is a halogen group or a halogenated alkyl group.

9. The battery according to claim 8 , wherein

the chain carbonic ester containing a halogen, which is represented by the formula (A), is at least one member of fluoromethylmethyl carbonate, difluoromethylmethyl carbonate and bis(fluoromethyl) carbonate; and the cyclic carbonic ester containing a halogen, which is represented by the following formula (B), is at least one member of 4-fluoro-1,3-dioxolan-2-one and 4,5-difluoro-1,3-dioxolan-2-one.