| abstract |
The secondary battery includes a positive electrode including a positive electrode active material particle including a layered rock salt-type lithium composite oxide and a spinel-type metal oxide, and the positive electrode active material particle includes a layer containing A spinel-type metal oxide; a negative electrode; and an electrolytic solution containing a chain-like carboxylate and a cyclic ether are present on the surfaces of the particles of the rock-salt-like lithium composite oxide. |