Storage battery

摘要

An object is to provide a storage battery using materials for an electrode active material without waste. Another object is to provide an electrode active material with an appropriate compounding ratio. A lithium-ion storage battery includes a positive electrode, a negative electrode, and an electrolytic solution therebetween. The positive electrode includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer includes a first positive electrode active material and a second positive electrode active material. The charge capacity of the first positive electrode active material is higher than the discharge capacity thereof. The discharge capacity of the second positive electrode active material is higher than the charge capacity thereof. The first positive electrode active material may be a lithium-manganese composite oxide, and the second positive electrode active material may be a lithium-manganese oxide with a spinel crystal structure.

主权项

1. A lithium-ion storage battery comprising:
a positive electrode; a negative electrode; and an electrolytic solution between the positive electrode and the negative electrode, wherein the positive electrode comprises:
a positive electrode current collector; anda positive electrode active material layer, wherein the positive electrode active material layer comprises:
a first positive electrode active material; anda second positive electrode active material, wherein a charge capacity of the first positive electrode active material is higher than a discharge capacity of the first positive electrode active material, and wherein a discharge capacity of the second positive electrode active material is higher than a charge capacity of the second positive electrode active material.