Explanation of the four battery performances of ternary lithium batteries

Analyzed four types of ternary lithium batteries. Ternary lithium batteries can be divided into two categories: lithium metal batteries and lithium batteries. Lithium batteries do not contain metallic lithium and can be recharged. The fifth-generation rechargeable lithium metal battery was born in 1996. Its safety, specific capacity, self-discharge rate and functional price ratio are better than lithium batteries. Due to the high technical requirements, only a few companies in the country process this kind of lithium metal batteries. Lithium nickel cobalt manganate (ternary) battery: The specific energy available for theoretical practice is greatly improved. It is related to lithium cobalt oxide batteries, which can better play high-capacity uses, but from the material point of view, ternary lithium batteries Choose nickel cobalt manganese acid and organic electrolyte, but fundamentally solve the safety problem, if the battery short-circuit current is too large, it will cause potential safety problems. Lithium iron phosphate battery: The capacity is 170mAh/g, and the material can reach 160mAh/g. In terms of safety, lithium iron phosphate has high thermal stability, low electrolyte oxidation capacity, and high safety; but its disadvantages are low conductivity, large volume, large electrolyte consumption, and poor battery consistency due to large capacity. Lithium cobalt oxide battery: The biggest feature of preparation is that after fully charged, there is still a large amount of lithium ions in the anode, that is, in the negative tolerance, not more lithium ions are in the anode, but in the case of overload, the remaining The anode lithium ions will swim to the cathode and cannot be fully contained to form the cathode metal lithium. Because of the metal lithium dendrites, they are called dendrites. Once the dendrites, the Pierce gap is provided for timing, and the barrier Pierce will form an internal short circuit. Since the important component of the electrolyte is carbonate, the flash point and boiling point are low, and incineration or even explosion will occur at higher temperatures. Small-capacity lithium batteries are relatively simple to control the composition of lithium dendrites, so the current lithium cobalt oxide batteries are limited to portable electronic devices and other small-capacity batteries, and cannot be used for power lithium-ion batteries. Lithium manganate battery: Lithium manganate battery material will inevitably be a little bit. It can ensure that under full load conditions, the anode of lithium ions can be completely embedded in the carbon pores of the negative electrode, instead of binding residues like lithium cobaltate in the positive, fundamentally To prevent the occurrence of dendrites, theoretically speaking, in practice, if a lithium manganate battery is subjected to strong external force or rework during the preparation process, it may cause the battery to instantly form lithium ions during the charge and discharge cycle. . When the cathode cannot fully receive lithium ions, dendrites are formed. The battery's factory tests ensured this result. In summary, qualified lithium manganate batteries generally do not have safety accidents. The stable structure of lithium manganate makes its oxidation function far lower than that of lithium cobaltate. Even if an external short circuit, it can basically prevent the burning caused by lithium metal separation. And explosion. Does the 26650 lithium battery consume more power than the 18650 lithium battery? Well, I personally feel that the 26650 lithium battery should be high-end. How do you think that the 18650 lithium battery is more recommended? The following is an analysis by the author for everyone. The 18650 has a foreign power supply, 26650 It seems that only domestic bars, such as Sanyo 26650, 26650 enter the house. The volume and capacity of the 26650 are very large. The highest 18650 Panasonic 3400 mAh 26650 is now made in my country and claimed to have a 4000 mAh capacity, but the larger notebook battery uses 18650, which is compatible with the size of 2CR123A, so it is more used for flashlights. 26650 is not the only advantage of mainstream 26650 is that it has a higher discharge current than 18650. 26650 has larger volume and larger capacity, which is rarer than 18650. It is still 18650. Sum up better performance! 26650 traffic is large, but unreliable. 26650 is the best companion for torches, nothing more. Other electronic devices are rarely used, so their popularity is not high, such as #1 battery, which is mainly used for flashlights, and #5 battery, which is used for many electronic devices. 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: Application of mobile emergency UPS power supply truck