Analysis of the performance characteristics of lithium-ion batteries

Li-ion battery performance characteristics: 1. High open circuit voltage: battery cell voltage can generally reach 3.6V, which is 3 times that of ordinary nickel-hydrogen battery or nickel-cadmium battery; 2. High energy density: Take UR18650 battery as an example, its quality Specific energy and volume specific energy can reach 125Wh/kg and 300Wh/cm3 respectively; 3. High output power, suitable for high current charge and discharge; 4. Good cycle performance, no memory effect; 5. Small self-discharge: at room temperature, self-discharge The discharge rate is less than 12%, which is lower than that of nickel-cadmium batteries (approximately 25%/month) and nickel-hydrogen batteries (approximately 15%/month). Since there is a solid electrolyte phase film on the surface of the carbon negative electrode during the charge and discharge process, this film can allow ions to pass but not electrons, which can better prevent the self-discharge process; 6. High charge and discharge efficiency: Coulomb after cycling The efficiency can reach 100%; 7. Wide operating temperature range: -25～+45oC, if the thermal stability of the cathode material and electrolyte can be improved, the working temperature range will be expanded to -40～+70oC; 8. Environment Friendly chemical energy: Lithium ion battery does not contain pollution elements, it is a very environmentally friendly chemical energy storage device; 9. Long cycle life: If 80% discharge depth is used, the cycle life can reach more than 1200 times; if it is shallower The discharge depth can reach more than 5000 times; 10. Better production flexibility, can be made into batteries of various shapes, such as cylindrical, flexible packaging, etc. Therefore, compared with conventional secondary batteries, lithium secondary batteries have very excellent advantages. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How to use the battery correctly?