| abstract |
The positive electrode precursor system of the present invention has a positive electrode active material layer. In the positive electrode active material layer, the mass ratio A 1 of the carbon material is 15% by mass or more and 65% by mass or less. In the positive electrode active material layer, lithium transition The mass ratio A 2 of the metal oxides is 5% by mass or more and 35% by mass or less. The mass ratio A 3 of the alkali metal compounds in the positive electrode active material layer is 10% by mass or more and 50% by mass or less, A 2 /A 1 is 0.10 or more and 2.00 or less, A 1 /A 3 is 0.50 or more and 3.00 or less, and the peel strength of the positive electrode active material layer is 0.02 N/cm or more and 3.00 N/cm or less. |