CR2032 button cell batteries

What kind of power battery does CR2032 button cell batteries have?

①CR2032 button cell batteries:

CR2032 button cell batteries refers to a lithium ion battery that uses lithium iron phosphate as the positive electrode material. The positive electrode materials of lithium ion batteries mainly include lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Among them, lithium cobalt oxide is the positive electrode material used by most lithium ion batteries at present. The nominal voltage of CR2032 button cell batteries is 3.2V, the termination charge voltage is 3.6V, and the termination discharge voltage is 2.0V. Due to the different quality and process of positive and negative electrode materials and electrolyte materials used by various lithium battery manufacturers, there will be some differences in their performance.

Advantages: long life, large charge and discharge rate, good safety, good high temperature resistance, harmless elements, and low cost.

Disadvantages: low energy density, low tap density (volume density).

② Ternary lithium-ion battery:

Ternary lithium-ion battery generally refers to a lithium-ion battery using nickel-cobalt-manganese oxide or nickel-cobalt-aluminum oxide ternary positive electrode materials. Nickel salt, cobalt salt and manganese salt are used as three different components with different proportions, so it is called ternary, which contains many different types of batteries. From the shape, it can be divided into soft-pack batteries, cylindrical batteries and square hard-shell batteries.

Due to the high capacity density and relatively long driving range of ternary lithium-ion batteries, domestic car companies have turned to using ternary lithium-ion batteries for passenger cars, including BAIC, BYD, JAC, etc. However, ternary lithium-ion batteries have disadvantages such as poor safety, poor high temperature resistance and poor life. In early 2016, it was stopped by the Ministry of Industry and Information Technology and suspended the inclusion of ternary lithium-ion battery buses in the recommended model catalog for the promotion and use of new energy vehicles.

The nominal voltage of ternary lithium-ion batteries can reach 3.6-3.8V, with relatively high energy density, high voltage platform, high tap density, long cruising range, large output power, poor high temperature stability, but excellent low temperature performance, and relatively high cost.

Advantages: high energy density and high tap density.

Disadvantages: poor safety, poor high temperature resistance, poor life, poor high power discharge, and toxic elements (ternary lithium-ion batteries have a sharp rise in temperature after high power charging and discharging, and the oxygen released after high temperature is extremely easy to burn).

③ Lithium manganate ion battery:

Lithium manganate ion battery refers to a battery with lithium manganate material in the positive electrode. The nominal voltage of lithium manganate ion battery is 2.5~4.2v. Lithium manganate ion battery is widely used for its low cost and good safety. Lithium manganese oxide is one of the most promising lithium-ion cathode materials. Compared with traditional cathode materials such as lithium cobalt oxide, lithium manganese oxide has the advantages of rich resources, low cost, no pollution, good safety, and good rate performance. It is an ideal cathode material for power lithium-ion batteries, but its poor cycle performance and electrochemical stability have greatly limited its industrialization.

Advantages: high tap density, low cost, good rate performance, and easy preparation.

Disadvantages: poor high temperature resistance, the temperature of lithium manganese oxide rises sharply after long-term use, the battery life decays seriously, the cycle life decays quickly, and it is easy to swell.

④ Cobalt oxide lithium ion battery:

Cobalt oxide lithium ion battery has a stable structure, high capacity ratio, and outstanding comprehensive performance, but its safety is poor and the cost is very high. It is mainly used for small and medium-sized batteries and is widely used in small electronic devices such as laptops, mobile phones, MP3/4, etc., with a nominal voltage of 3.7V.

At present, the cost of cobalt lithium is too high, and many companies use manganese lithium instead, and some are all manganese lithium. Lithium cobalt oxide has stable performance, and the technology used in mobile phones is the most mature at present. However, the biggest disadvantage of its use is its high cost. Cobalt is a relatively scarce strategic metal. In addition, it is also difficult to use it in power lithium-ion batteries.

In theory, the power lithium-ion battery we want should have high energy density, high volume density, good safety, high temperature and low temperature resistance, long cycle life, non-toxic and harmless, high-power charging and discharging, and all advantages in one and low cost. However, such a battery does not exist at present, so we have to make a choice among the advantages and disadvantages of different types of batteries. Moreover, different electric vehicles have different requirements for batteries. Therefore, only by making a long-term judgment on electric vehicles can we correctly judge the choice of battery route.

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