| abstract |
The present application relates to an anode material and an electrochemical device and an electronic device comprising the anode material. The positive electrode material is a mixed material, which includes lithium cobalt oxide and lithium nickel composite oxide, wherein the volume distribution curve of the positive electrode material particles satisfies the following condition. That is, the volume distribution curve of the positive electrode material particles includes a first peak and a second peak, and the particle size value of the first peak is larger than the particle size value of the second peak, where the peak value of the first peak and the The ratio of the half width of the first peak is 1 mm -1 to 4 mm -1 , and the ratio of the peak of the second peak to the half width of the second peak is 6 mm -1 to 10 mm -1 . By using the positive active material satisfying the particle distribution conditions, it is possible to effectively increase the compressive density of the positive electrode and improve the energy density of the electrochemical device. In addition, the cathode material of the present application can effectively reduce fine powder generated due to sintering during the manufacturing process. The positive electrode material and electrochemical device of the present application have high energy density and cycle stability. |