Cathode active material, cathode therewith and nonaqueous electrolyte secondary battery

A cathode for non-aqueous electrolyte secondary battery, comprising:

• a conductive base material;
• and
• a cathode active material layer that is disposed on the conductive base material and at least contains a cathode active material, wherein
• the cathode active material includes:
• a particle containing a cathode material capable of absorbing and releasing lithium;
• and
• a film that is disposed at least partially on the particle and contains a metal salt represented by a formula (2):
• where R2 represents a chain saturated hydrocarbon group, a chain unsaturated hydrocarbon group or a ring saturated hydrocarbon group, where M2 represents lithium, and where a2, b2, c2, d2 and e2 each represent an integer of 1 or more.

A non-aqueous electrolyte secondary battery comprising:

• a cathode having a cathode active material;
• an anode;
• a separator;
• and
• an electrolyte,
• wherein the cathode active material includes:
• a particle containing a cathode material capable of absorbing and releasing lithium;
• and
• a film that is disposed at least partially on the particle and contains a metal salt represented by a formula (2):
• where R2 represents a chain saturated hydrocarbon group, a chain unsaturated hydrocarbon group or a ring saturated hydrocarbon group, where M2 represents lithium, and where a2, b2, c2, d2 and e2 each represent an integer of 1 or more.