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Why we need a polymer lithium-ion battery ?

Lithium-ion battery (Li-ion) is widely used in the communication and electronics industries as a high-efficiency energy carrier, especially for personal communication tools such as mobile phones and PDAs. It was first widely used in Japan after commercialization in 1992. Especially with the use of mobile phone communication tools, lithium batteries are gradually accepted by the majority of users due to their advantages of light weight, large capacity and environmental protection.

polymer lithium-ion battery

However, in the past ten years, with the rapid development of communication technology, mobile phone color screen technology, MMS technology, Bluetooth technology and camera technology have appeared successively, which puts higher requirements on the capacity, volume, weight and electrochemical performance of the battery. Traditional liquid lithium batteries have become increasingly unable to adapt to new demands. The emergence of a new polymer lithium-ion battery (Li-Polymer) caters to this demand. Polymer lithium battery is a third-generation lithium-ion battery developed on the basis of the original steel shell and aluminum shell battery. It is lighter, thinner and has higher energy density. It is accepted by domestic and foreign communication terminal manufacturers and design companies.

The fundamental difference between a polymer lithium-ion battery and a liquid lithium-ion battery is that the electrolytes used in the two are different. The electrolyte of a lithium polymer battery is solid in appearance and is called a polymer solid electrolyte. This electrolyte is a type of polymer material which is in a solid state but which dissolves the supporting electrolyte like a liquid and can undergo ion migration. Liquid lithium, as the name suggests, electrolytes are liquid. Due to the fluidity of liquids, changes in external environmental factors such as high temperatures have a greater impact than polymer lithium-ion batteries.

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