Ministry of Science and Technology: high specific energy density lithium ion power battery density increased by 30%
The project team carried out in-depth research and technical research on improving the weight ratio of power battery to energy density and greatly improving cycle life, including the development of new high-nickel cathode materials, silicon-carbon composite anode materials and new electrolytes. At present, monomer cells with a weight ratio of 260Wh/kg have been developed, and the capacity retention rate has reached 83.28% after 350 charge and discharge cycles. At the same time, power cells with energy densities of 280Wh/kg and 300Wh/kg have been developed. sample. The project breaks through the industrialized processing and preparation technology of high energy density batteries, and forms a standardized platform in material development, cell preparation process technology, electrochemical performance and safety performance testing. The research results will be further extended to square and round. Shaped power battery, covering a full range of power battery products.
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