The development route of high energy density includes: high voltage cathode material, high capacity cathode material. High voltage cathode material usually refers to the battery voltage is higher than 4.2V cathode material. Lithium cobalt oxide, lithium manganese oxide, three yuan of high voltage material. One high voltage lithium cobalt commercial has been very mature, a large number of applications in high-end digital products, its energy density is higher than the ordinary three yuan battery. At present, high voltage lithium cobalt battery voltage is usually 4.35V, the next 3-5 years 4.4V, 4.5V high voltage lithium cobalt oxide battery or large-scale applications. Three high voltage cathode materials are rarely used. But three yuan high voltage cathode material may be a breakthrough in the future to achieve 300Wh/kg energy density. At present, three yuan NCM811 grams capacity has more than 180mAh/g, coated or doped by high voltage can be achieved at the same time, it will further improve the capacity of G (high voltage material equivalent to low voltage when no active lithium activation, greater use of materials). However, there are many technical problems of three yuan of high voltage material is not resolved, the stability of the material itself has not been resolved.
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