Nickel Hydride No. 5 batteries

　　Structure of Nickel Hydride No. 5 batteries:

　　Regarding the positive grade material of LiFePO4, its material source is relatively common, the circulation system has a long service life, a high safety index, and little air pollution. It can best reflect the strong carding effect on many positive grade materials. LiFePO4 has always been a popular material for making positive stages of lithium batteries. In the development trend in recent years, LiFePO4 type positive materials have reached the level of practical use and have even begun to be commercialized. LiFePO4 has an olivine structure. The theoretical specific capacity is 170mAhh. When the lithium-ion battery is charged, an oxidation reaction will occur, and the lithium ions FeO6 will be released from the layers, flow into the electrolyte, and finally reach the negative electrode. In the external circuit, the electrons will reach the negative electrode together, and the iron will be released from the ferrous iron The ions turn into ferric ions and an oxidation reaction occurs. The discharging process is opposite to the charging process, and what occurs is a reduction reaction.

　　Basic operating principles of lithium iron phosphate batteries:

　　Nickel Hydride No. 5 batteries refers to a lithium battery using Nickel Hydride No. 5 batteries as the positive electrode material of the battery. The positive data of lithium batteries include lithium cobalt oxide batteries, lithium manganese oxide batteries, lithium nickel oxide, ternary, lithium iron phosphate batteries, etc. Among them, lithium cobalt oxide batteries are the majority of battery cathode materials currently used in lithium batteries.

　　practical significance.

　　In the metal material trading market where cobalt (Co) is more expensive, less nickel (Ni) and manganese (Mn) are stored, while more iron (Fe) is stored. The price of this metal material is consistent with the market price of battery cathode materials. Therefore, lithium batteries made of LiFePO4 battery cathode material should be more cost-effective. Another feature is that there is no pollution to the environment.

　　The requirements of rechargeable batteries are: large capacity, high output voltage, special battery charging cycle function, stable output voltage, capable of charging large currents, photocatalytic reliability, and safe use (not prone to damage due to poor operation). If overcharged, overcharged, discharged and short-circuited, it may cause ignition or explosion), it has a wide operating temperature range, is non-toxic or slightly toxic, and has zero pollution to the environment. The lithium iron phosphate rechargeable battery uses LiFePO4 as the positive stage, which is very good in these functional requirements, especially large charge and discharge (5~10C charge and discharge), the charge and discharge voltage is stable, and it is safe (no incineration, no engineering) explosion), service life (cycle frequency), and zero pollution to the environment. It is the best high-current output power lithium battery at present.

　　Structure and principles.

　　As the positive stage of the battery, LiFePO4 is connected to the positive stage of the battery by aluminum platinum, with a polymer decorative partition in the middle to separate the positive stage from the negative stage. However, Li lithium-ion batteries can pass, while e- does not. It can be seen that the right side is the negative stage of the battery composed of carbon (high-purity graphite), which is connected to the negative stage of the battery through copper. Between the upper and lower parts of the lithium battery pack is the lithium battery electrolyte, and the lithium battery pack is sealed with a plastic shell.

　　During the charging process, the lithium ion Li on the positive stage of the LiFePO4 rechargeable battery transfers to the negative stage through the polymer isolation layer; during the charging and discharging process, the lithium ion Li on the negative stage transfers to the positive stage through the isolation layer. class. Because lithium-ion batteries move back and forth during the battery charging process, lithium-ion batteries are called lithium batteries.

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