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3. The market-oriented membrane materials are mainly polyolefin membranes made of polyethylene and polypropylene. In the structure of lithium-ion batteries, the separator is one of the key inner components. The performance of the separator determines the interface structure, internal resistance, and other characteristics of the battery. Straightness affects the capacity, cycling, and safety performance of lithium-ion battery packs. Excellent performance of the separator is crucial for improving the overall performance of the battery.

4. Electrolytes are generally prepared from high-purity organic solvents, lithium salts of electrolytes, necessary additives, and other raw materials under certain conditions and in a certain proportion. Electrolyte plays a role in conducting ions between the positive and negative electrodes of lithium-ion batteries, ensuring that lithium iron phosphate batteries achieve advantages such as high voltage and high specific energy.

Is lithium iron phosphate battery suitable for storage at low temperatures

Lithium ion batteries need to be fully charged before storage. It can be stored for more than half a year at 20 ℃, indicating that lithium iron phosphate batteries are suitable for storage at low temperatures. Someone once suggested storing the rechargeable battery in the refrigerator freezer, which is indeed a good idea. Lithium primary batteries have low self-discharge and can be stored for up to 3 years. If stored under refrigerated conditions, the effect will be better. Storing lithium primary batteries in a low-temperature location is a good approach.

Lithium ion batteries have self discharge phenomena, and long-term storage can lead to over discharge and damage the internal structure of the battery, reducing its lifespan. Therefore, lithium-ion batteries that have been stored for a long time should be recharged every 3-6 months, preferably at a voltage of 3.8-3.9V.

The higher the storage temperature and the more fully charged the battery, the more severe the capacity loss. Therefore, long-term storage of lithium-ion batteries is not recommended. If users have idle batteries in their hands, experts recommend storage conditions such as a charging level of 40% and a storage temperature below 15 degrees Celsius or lower. The temperature range of lithium iron phosphate batteries is wide, and they can still be used outdoors in winter in the north, but their capacity will decrease significantly. If they return to room temperature, their capacity can be restored.

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