The main components of lithium ion battery include cathode, cathode, electrolyte, membrane, etc. The storage and release of lithium ion energy is realized in the form of REDOX reaction of electrode materials, and the cathode active material is the most critical core material of lithium ion battery.
Professor GOODENOUGH, the father of lithium battery, has made a great contribution to the research of lithium battery cathode materials. In 1980, while working at the university of Oxford in the United Kingdom, he discovered that lithium cobalt oxide (LCO) could be used as a lithium cathode. In 1981, he mentioned the feasibility of lithium nickelate (LiNiO2, also known as LNO) as a cathode material in the LCO patent. In 1983, he made his first attempt to use lithium manganate (LMO) as a cathode material for lithium-ion batteries. In 1997, he developed lithium iron phosphate (LiFePO4, or LFP), which is the cathode material of olivine structure. In addition, to solve the problem of unstable properties of lithium nickelate, a large amount of research has been conducted in the area of doping modification by Prof. DAHN from Canada and Prof. Sumika kosuki from Japan. In 1997, toda applied for the first patent of lini1-x-ycoxalyo2 (NCA). In 1999, liu zhaolin and yu aishui et al. from the university of Singapore introduced Mn modification on the basis of lithium ni-co (lini1-x-ycoxmnyo2, namely ternary material and NCM).
After nearly 30 years of rapid development, based on the above scientists research results. Lithium cobalt oxide, lithium manganese oxide, lithium nickel cobalt oxide (lini1-xcoxo2, also known as NC), lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminate, lithium iron phosphate and other cathode materials have been industrialized, and have been expanded for many fields. With the demand of high energy density cathode materials for new energy vehicles, the nickel-cobalt lithium manganate ternary material has become the most important cathode material with the largest proportion.
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