Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
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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.
release time:2025-09-19 Hits: Popular:AG11 battery
The selection of materials for lithium - battery cells is a critical decision that significantly impacts the battery's performance, safety, lifespan, and cost. Each component of a lithium - battery cell, including the cathode, anode, electrolyte, and separator, requires careful material selection based on specific principles to achieve optimal battery characteristics.
For the cathode material, key considerations include energy density, voltage, stability, and cost. Lithium - cobalt - oxide (LCO) has been widely used in consumer electronics due to its high energy density and relatively high operating voltage, enabling long - lasting battery life in small - scale devices. However, its high cost and limited safety under high - temperature and over - charging conditions have led to the exploration of alternative materials. Lithium - nickel - manganese - cobalt - oxide (NMC) and lithium - nickel - cobalt - aluminum - oxide (NCA) have gained popularity as they offer a good balance between energy density, cost, and safety. NMC cathodes, for example, can provide higher energy density than LCO while being more cost - effective and safer. Another important factor is the stability of the cathode material during charge - discharge cycles. Materials with good structural stability can maintain their crystal structure over multiple cycles, reducing capacity fade and extending the battery's lifespan.
The anode material selection is mainly focused on aspects such as lithium - ion storage capacity, rate capability, and safety. Graphite has been the dominant anode material for a long time due to its relatively high theoretical lithium - ion storage capacity, good rate capability, and low cost. However, as the demand for higher - performance batteries increases, new anode materials are being investigated. Silicon - based anodes, for instance, have a much higher theoretical capacity than graphite but face challenges such as large volume changes during lithium - ion insertion and extraction, which can lead to electrode degradation. To address this, composite anode materials that combine silicon with graphite or other additives are being developed to improve the stability and performance of the anode. Additionally, the anode material should have good electrical conductivity to ensure efficient lithium - ion transport and low internal resistance.
The electrolyte in a lithium - battery cell is responsible for transporting lithium ions between the cathode and anode. Material selection for the electrolyte emphasizes ionic conductivity, chemical stability, and safety. Organic liquid electrolytes, typically composed of lithium salts dissolved in organic solvents, are commonly used due to their high ionic conductivity and good compatibility with electrode materials. However, they are flammable and pose safety risks. As a result, research is underway to develop safer electrolytes, such as solid - state electrolytes. Solid - state electrolytes offer several advantages, including non - flammability, high mechanical strength, and the potential for higher energy density. They can also eliminate the risk of electrolyte leakage, enhancing the overall safety of the battery.
The separator, which physically separates the cathode and anode while allowing lithium ions to pass through, requires materials with high ionic permeability, mechanical strength, and chemical stability. Polyolefin - based separators, such as polyethylene (PE) and polypropylene (PP), are widely used due to their good mechanical properties and chemical resistance. However, they have limitations in terms of high - temperature resistance and ion - transport efficiency. New separator materials, such as ceramic - coated separators, are being developed to improve these aspects. The ceramic coating can enhance the thermal stability of the separator, preventing it from melting and causing short - circuits at high temperatures, while also improving the wettability of the electrolyte and ion - transport performance. the principles of lithium - battery cell material selection involve a comprehensive evaluation of multiple factors for each component to achieve batteries with high performance, safety, and economic viability.
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