CPC H01M 4/666 (2013.01) [H01M 4/485 (2013.01); H01M 4/661 (2013.01); H01M 4/667 (2013.01); H01M 10/0569 (2013.01); H01M 2300/0034 (2013.01)] | 12 Claims |
1. A secondary battery, comprising:
a cathode comprising a cathode current collector and a cathode mixture layer containing a cathode active material;
an anode comprising an anode current collector and coating layer; and
a non-aqueous electrolyte containing a non-aqueous solvent and a lithium salt which has been dissolved in the non-aqueous solvent,
wherein:
a surface of the anode current collector is coated with the coating layer,
the coating layer consists of an alkaline earth metal fluoride,
the cathode active material includes a lithium composite oxide having a crystal structure which belongs to a space group R-3m or C2/m, and the lithium composite oxide contains Ni and Co,
the anode current collector is made of a metal material, the metal material including copper or an alloy thereof,
the coating layer is directly disposed on the surface of the anode current collector,
during charge, a lithium metal represented by the formula Li is deposited on the anode, and
during discharge, the lithium metal represented by the formula Li is dissolved in the non-aqueous electrolyte.
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