Difference between lithium polymer and lithium cobalt battery

First, the characteristics are different.

1, li-polymer: plastic and flexible; Higher specific mass energy (3 times that of MH-Ni battery); The electrochemical stability window is wide, up to 5 V; Perfect safety and reliability; Longer cycle life and less capacity loss; High volume utilization rate.

2. Lithium cobalt oxide battery: stable structure, high capacity ratio and outstanding comprehensive performance, but poor safety and high cost.

Second, the application is different.

1, li-polymer: Polymer lithium-ion battery technology has been matured and commercialized in the world for more than two years. Although the sales volume is growing rapidly, the market share is still around 10%, which is incomparable with the 90% market share of liquid lithium batteries and lower than people's expectations.

2. Lithium cobalt oxide battery: The application of lithium cobalt oxide battery is still relatively small. The technology of lithium cobalt for small batteries is very mature, but now the cost of lithium cobalt is too high. Many companies use lithium manganese instead, and some are all lithium manganese.

Lithium cobalt oxide has stable performance, and the technology applied to mobile phones is the most mature at present, but its biggest disadvantage is its high cost. Cobalt is a scarce strategic metals. In addition, it is difficult to apply it to power batteries.

Extended data:

Precautions for using lithium polymer:

First, pay attention to short circuit.

Polymer lithium-ion batteries are prone to short circuit during charging. Including internal short circuit, external short circuit and so on. Although most lithium-ion batteries now have short-circuit protection circuits and explosion-proof wires, in many cases, such protection circuits may not work under various circumstances, and the role of explosion-proof wires is limited.

Second, don't overcharge.

If the charging time of polymer lithium-ion battery is too long, the possibility of expansion will increase.

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