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What is a lithium battery?
Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very high environmental standards. So, lithium batteries have not been applied for a long time. Lithium batteries have now become mainstream.
Lithium ion batteries are mainly composed of four materials: positive electrode material, negative electrode material, separator, electrolyte, etc! Lithium ion battery: It is a type of secondary battery (rechargeable battery) that mainly relies on the movement of lithium ions between the positive and negative electrodes to function. During the charging and discharging process, Li+is intercalated and deintercalated back and forth between two electrodes: during charging, Li+is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium rich state; When discharging, it is the opposite.
Performance characteristics of lithium batteries
1. Long service life, with a service life of more than 6 years. The battery with lithium iron phosphate as the positive electrode can be charged and discharged with 1CDOD and has a record of 10000 uses;
2. Higher than energy. It has a high storage density, currently reaching 460-600Wh/kg, which is about 6-7 times that of lead-acid batteries;
3. Capable of withstanding high power, the lithium iron phosphate lithium-ion battery used in electric vehicles can achieve a charge and discharge capacity of 15-30 ° C, facilitating high-intensity acceleration during start-up;
4. The rated voltage is high (with a single working voltage of 3.7V or 3.2V), which is approximately equal to the series voltage of three nickel cadmium or nickel hydrogen rechargeable batteries, making it easy to form a battery power pack;
5. Lightweight, with a weight of about 1/5-6 of lead-acid products under the same volume;
6. Production basically does not consume water, which is very advantageous for our water scarce country.
7. Strong adaptability to high and low temperatures, it can be used in environments ranging from -20 ℃ to 60 ℃. After processing, it can be used in environments ranging from -45 ℃;
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