The difference between a lithium polymer battery and a lithium cobalt oxide battery

Introduction The difference between lithium polymer battery and lithium cobalt oxide battery 1. Different characteristics 1. Lithium polymer battery: flexibility of forming higher mass specific energy (3 times that of MH- electrochemical battery Neither) ;

The difference between a lithium polymer battery and a lithium cobalt oxide battery

1. Different characteristics

1. Lithium polymer battery: shaping flexibility; higher mass specific energy (3 times that of MH-Ni battery, wide electrochemical stability window, up to 5V); ; perfect safety and reliability; longer life, less capacity loss;

2. Lithium cobalt oxide battery: stable structure, high capacity ratio, outstanding overall performance, but its safety is poor and the cost is very high.

2. Different applications

1. Lithium Polymer Battery: It has been more than 2 years since lithium-ion polymer battery technology matured and was commercialized globally, although sales are increasing rapidly. , However, its market share is still about 10%, which is incomparable with the 90% market share of liquid lithium batteries and is lower than people's expectations.

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

Lithium cobalt oxide has stable performance and is currently the most mature technology used in mobile phones. However, the biggest disadvantage of its application is its high cost. Cobalt is also a relatively rare strategic metal. also has some advantages when used in power batteries.

Detailed information:

< p>Precautions for using lithium polymer batteries:

1. Pay attention to short circuit conditions

Lithium-ion polymer batteries are prone to short circuitrts-circuits during the charging process. Including: internal short circuit, external short circuit, etc. Although most lithium-ion batteries now have short circuit protection circuits and explosion-proof wires, in many cases this protection circuit may not work under various circumstances, and the role of explosion-proof wires is also very limited.

2. Do not overcharge when charging

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

Baidu Encyclopedia-Lithium Ion Polymer Battery

Baidu Encyclopedia-Lithium Cobalt Oxide Battery

< strong>Lithium polymer batteriesare very good. The advantages of this battery are as follows:

1. The working voltage of a single battery can reach 3.6V~3.8V, which is much higher than the 1.2V voltage of batts.eries nickel-metal hydride and nickel-cadmium.

2. High capacity density. Its capacity density is 1.5 to 2.5 times that of nickel-metal hydride batteries or nickel-cadmium batteries.

3. Small self-discharge. It also loses very little capacity after being left for a long time.

4. Long life expectancy. Its lifespan can reach more than 500 times under normal use conditions.

5. There is no memory effect, there is no need to drain the remaining power before charging, and it is easy to use.

6. Good safety performance. GatherCompound lithium batteries use aluminum-plastic soft packaging in the structure, which is different from the metal casing of liquid batteries. Once a safety hazard occurs, liquid batteries explode easily, while polymer batteries only swell.

7. Small thickness. It can be rCoated thinner, ultra-thin and the battery can be assembled into a credit card.

8. Big capacity. Polymer batteries have 10-15% more capacity than steel-shelled batteries of the same size and 5-10% more capacity than aluminum-shelled batteries.

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