1.5v dry cell battery.Will quaternary lithium-ion battery technology be the future development direction of power lithium batteries?

　　The stacking era is also called the 3.0 era in the field of power lithium batteries. It refers to the new energy power lithium battery innovation road characterized by stacking technology. New processes, new standards, new materials, and new technologies have emerged in large numbers and are specifically designed for automobiles. era. The birth of cobalt-free materials and quaternary material lithium-ion batteries has emerged at the historic moment.

　　Cobalt-free materials greatly solve the problem of raw materials while extending battery life, helping to reduce costs and reduce dependence on foreign countries. Quaternary materials are more resistant to high temperatures and have better safety performance. The advent of these two materials has added new vitality to the power lithium battery market and has also become a strong competitor.

　　Low temperature lithium iron phosphate battery 3.2V 20A -20℃ charging, -40℃ 3C discharge capacity ≥70%

　　Charging temperature: -20~45℃ -Discharge temperature: -40~+55℃ -40℃ Support maximum discharge rate: 3C -40℃ 3C discharge capacity retention rate ≥70%

　　The most troublesome thing about ternary lithium-ion batteries is that they can supply oxygen by themselves without the assistance of external conditions. The advantage of the quaternary lithium-ion battery is that it can reduce gas production by 25%, and its heat resistance is also better, so the probability of combustion is small. Judging from the progress, the quaternary material battery project was initiated in September 2018, and the material development will be completed by the end of 2019. The material SOP is expected to be realized in December 2020, and the quaternary material-based battery will be realized in November 2022. Cell SOP.

　　Because the power lithium battery industry is eager for endurance, higher energy density is also accompanied by more active chemical properties, and safety performance is an issue that the entire industry must face up to. Against this background, the quaternary cathode material was launched, and the world's first quaternary material battery cell was announced based on this material.

　　The quaternary lithium-ion battery jointly developed by GM and LG is likely to set off a revolution in the power lithium battery industry. Compared with NCM/NCA ternary lithium-ion battery products, the quaternary lithium-ion battery has longer cycle life, excellent safety, and It has the advantages of lower cost, better heat resistance and less gas production. For car companies and battery manufacturers, these advantages mean that quaternary lithium-ion batteries are an option that is difficult to refuse.

　　The stable physical and chemical structure of quaternary lithium-ion batteries can support the future high-nickel route of power lithium batteries. At the same time, the mixing of relatively cheap aluminum elements greatly reduces the content of expensive cobalt elements in the positive electrodes of power lithium batteries. About power lithium batteries The cost reduction is also very effective. Whether it is technical route or market level, the future prospects of quaternary lithium-ion batteries are very broad. It can be considered that quaternary lithium-ion batteries are the most revolutionary battery technology before the birth of all-solid-state batteries.

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