Abstract: The present disclosure belongs to the technical field of secondary batteries, and in particular, to a battery and an electric device. A capacity voltage difference ratio of the battery in a capacity test at 45° C. and 1/1C, which is the ratio of an intensity maximum value Q1 between a high-nickel H2-H3 phase transition peak 3.9-4.2 V to an intensity Q2 at 3.9 V of the battery satisfies 1<Q1:Q2?1.6; a positive electrode sheet of the battery comprises a positive electrode active material, and the positive electrode active material comprises a transition metal oxide A: Lia1(Nix1Coy1Mnz1Gb1)O2-c1Dc1, and a transition metal oxide B: Lia2(Nix2Coy2Mnz2Mb2)O2-c2Ec2. The positive electrode active material provided in the present disclosure can take into account lower costs, low-temperature dynamic performance, high-temperature cycle performance and high-temperature storage performance.

Abstract: Disclosed are a fast-charging graphite and a battery. The graphite has a graphitization degree of 90-97% and a lithium-ion diffusion coefficient of 2.3×10?14?8.7×10?12 cm2/s at 25° C. and a state of charge (SOC) of 10%. The battery includes a cathode plate, an anode plate, a separator arranged between the cathode plate and the anode plate, and an electrolyte. The anode plate includes an anode current collector and an anode coating coated on at least one side of the anode current collector. The anode coating includes an anode active material, and the anode active material includes the fast-charging graphite.