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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.
source:Industry News release time:2025-03-07 Hits: Popular:AG11 battery
Cathode materials play a pivotal role in the performance of cylindrical lithium - ion batteries. They are responsible for storing and releasing lithium ions during the charging and discharging processes. One of the most common cathode materials is lithium cobalt oxide (LiCoO₂). LiCoO₂ offers a high theoretical specific capacity, typically around 274 mAh/g. It has a well - understood crystal structure, which allows for relatively stable lithium - ion insertion and extraction. This material has been widely used in small - scale applications such as mobile phones and laptops due to its high energy density. However, it has some drawbacks. Cobalt is a relatively expensive and scarce element, and LiCoO₂ can pose safety risks at high temperatures, as it may release oxygen and cause thermal runaway.
Another important cathode material is lithium nickel - manganese - cobalt oxide (NCM). NCM comes in different ratios, such as NCM111, NCM523, NCM622, and NCM811. As the nickel content increases, the specific capacity of the material also rises. For example, NCM811 can achieve a specific capacity of over 200 mAh/g. NCM materials offer a better balance between cost, energy density, and safety compared to LiCoO₂. Nickel provides a higher capacity, manganese improves the material's structural stability, and cobalt helps with conductivity. However, as the nickel content increases, the material may become more sensitive to moisture and oxygen in the air, which requires careful handling during battery manufacturing.
Lithium iron phosphate (LiFePO₄) is also a popular choice for cylindrical lithium - ion batteries. It has a lower theoretical specific capacity compared to LiCoO₂ and NCM, around 170 mAh/g. But it offers excellent thermal stability and high - cycle life. LiFePO₄ is more environmentally friendly as it contains no heavy metals like cobalt. It is widely used in applications where safety and long - term durability are crucial, such as electric vehicles and energy storage systems. The olivine structure of LiFePO₄ provides a stable framework for lithium - ion movement, making it highly reliable under various operating conditions.
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