Law Offices of Liaoteng Wang
Battery
The present invention relates to a battery, comprising a positive electrode plate, a separator and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active materials on at least one surface of the positive electrode current collector in which the underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material, and a first conductive material and in which the upper positive active material layer comprises a second positive active material, a second polymer material, and a second conductive material and the first polymer material comprises an oil-dispersible polymer material having a solubility in NMP at 130° C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The battery exhibits good safety performance and improved electrical performance.
Contemporary Amperex Technology Co., Limited
H H H H H H H Y Y H H
H01M H01M H01M H01M H01M H01M H01M Y02E Y02P H01M H01M
inventional inventional inventional inventional additional inventional inventional additional additional additional inventional
Tianyi Jianbao Haihao Chao Shisong Wei Huihui Chao
Gao Xu Shi Jin Li Li Liu Guo