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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-01-10 Hits: Popular:AG11 battery
Cycle life, safety, energy density, and fast charging and discharging capacity have always been the most important indicators for measuring power batteries. Lithium titanate materials, due to their zero strain, high lithium potential, and nano particle properties, have inherent advantages such as high safety, ultra long lifespan, and fast charging. They have always been considered an ideal negative electrode material to replace graphite. However, due to the high potential of lithium titanate towards lithium, it also results in low battery energy density and relatively short range. However, the proposal of a power battery technology solution with fewer batteries and fast charging has made lithium titanate batteries have a broader application prospect. Therefore, the current key is to solve the problems encountered in the industrialization process of lithium titanate batteries.
Lithium titanate negative electrode material, due to its easy absorption of water and high activity, is prone to react with the electrolyte in the battery system and cause gas expansion. Therefore, during the formation stage of lithium titanate batteries, it is necessary to fully react with the side reactions, timely remove the gas, and form a passivation film on the negative electrode surface, which can suppress gas expansion during subsequent use. Therefore, the formation process is particularly important for lithium titanate batteries.
Patent 201110294924.3 discloses a method for the formation of a power lithium-ion battery. The method involves charging the battery in three stages, with each stage requiring a long period of standing. After the battery is pre charged, the battery is placed in a glove box, the gas is removed by vacuum, and the liquid injection port is sealed. This method can effectively form a stable SEI film by using closed mouth formation. Patent application 201310192025.1 discloses a formation method for improving the cycle life of lithium titanate batteries. The method adopts low current formation and high-temperature aging, and then depressurizes and exhausts gas after being left unused. Multiple low current formation and high-temperature aging are repeated to fully react with the water inside the battery, extract the generated gas, and solve the problem of lithium titanate battery bloating. The above methods can achieve improved lifespan through repeated degassing and multiple formation steps, but they all have problems with long formation time and complex processes.
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