| abstract |
The present invention provides a positive electrode sheet and a battery, wherein the positive electrode sheet includes a positive electrode current collector and a positive electrode diaphragm provided on at least one surface of the positive electrode current collector and including a positive electrode active material. The positive electrode active material includes one or more of LiNi x Co y Mn 1-x-y O 2 , LiNi x Co y Al 1-x-y O 2 and modified compounds thereof, and the positive electrode membrane The OI value C OI is 8-100, and the positive pole piece satisfies the relational expression: 0.015≤COI ×ρ≤1.50. The positive electrode sheet of the present invention can have less swelling and excellent dynamic performance, and the battery of the present invention can have the characteristics of high safety, excellent dynamic performance and long cycle life. |