What are the disadvantages of lithium batteries?

Unlike other rechargeable batteries, the capacity of lithium batteries will slowly decline, regardless of the number of uses, but related to temperature. The mechanism is that the internal resistance gradually increases, so it is easier to reflect in electronic products with high working current. The recovery rate is relatively high. About 1% of the new products leaving the factory have to be recycled for various reasons. When overcharge is not tolerated, the excessively inserted lithium ions will be permanently fixed in the crystal lattice and can no longer be released, which can shorten the battery life. When the discharge is not tolerated (discharge when the voltage is less than 3.0V), too much lithium ions are extracted from the electrode, which can cause the collapse of the crystal lattice and shorten the life. The higher battery cost is mainly manifested in the high price of the cathode material LiCoO2 (the resource of Co is less), and the purification of the electrolyte system is difficult. Can not discharge at high current. Due to the organic electrolyte system and other reasons, the internal resistance of the battery is larger than that of other types of batteries. Therefore, a smaller discharge current density is required. Generally, the discharge current is below 0.5C, which is only suitable for small and medium current electrical appliances. It is necessary to protect the circuit to control overcharge protection: battery overcharge will destroy the positive electrode structure and affect performance and life; at the same time, overcharge will decompose the electrolyte, and the internal pressure will cause problems such as leakage; therefore, it must be at a constant 4.1V-4.2V Press down to charge; over-discharge protection: over-discharge will cause difficulty in the recovery of active materials, so there must be protection circuit control. Misuse is a potential safety hazard. Since the materials of lithium batteries are very active, major accidents such as electrolyte decomposition, combustion or even explosion will occur if they are used incorrectly. Low temperature performance Under low temperature, the battery performance deteriorates significantly, the discharge platform decreases, the output power decreases, and the available power decreases. Other shortcomings Once the vent and diaphragm are activated, the battery will permanently fail. Different discharge rates have a greater impact on the usable capacity of the battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of UPS battery types