According to the different electrolyte materials used in lithium-ion batteries, lithium-ion batteries can be divided into two categories: liquid lithium-ion batteries (referred to as LIB) and polymer lithium-ion batteries (polymer lithium ion battery, abbreviated as LIP).
The positive and negative electrode materials used in polymer lithium ion batteries are the same as those used in liquid lithium ion batteries. The positive electrode materials can be classified into lithium cobaltate, lithium manganate, ternary materials and lithium iron phosphate materials, and the negative electrode is graphite, and the working principle of the batteries is basically the same.
The main difference between them is the electrolyte, liquid lithium-ion batteries use a liquid electrolyte, while polymer lithium-ion batteries are replaced with a solid polymer electrolyte. The polymer can be either "dry" or "colloidal", and most of them use polymer colloidal electrolyte at present.
Polymer lithium-ion batteries can be divided into three categories.
(1) solid polymer electrolyte lithium-ion batteries
The electrolyte is a mixture of polymer and salt, this kind of battery has low ionic conductivity at room temperature and can be used at room temperature.
(2) Gel polymer electrolyte lithium ion battery
That is, additives such as plasticizers are added to the solid polymer electrolyte so as to improve the ionic conductivity and make the battery usable at room temperature.
(3) Lithium-ion battery with polymer cathode material
According to the different electrolyte materials used in lithium-ion batteries, lithium-ion batteries can be divided into two categories: liquid lithium-ion batteries (abbreviated as LIB) and polymer lithium ion batteries (abbreviated as LIP).
The positive and negative electrode materials used in polymer lithium-ion batteries are the same as those used in liquid lithium-ion batteries. The positive electrode materials can be classified into lithium cobaltate, lithium manganate, ternary materials, and lithium iron phosphate materials, and the negative electrode is graphite, and the working principle of the batteries is basically the same.
The main difference between them is the electrolyte, liquid lithium-ion batteries use a liquid electrolyte, while polymer lithium-ion batteries are replaced with a solid polymer electrolyte. The polymer can be either "dry" or "colloidal", and most of them use polymer colloidal electrolyte at present.
Polymer lithium-ion batteries can be divided into three categories.
(1) solid polymer electrolyte lithium-ion batteries
The electrolyte is a mixture of polymer and salt, this kind of battery has low ionic conductivity at room temperature and can be used at room temperature.
(2) Gel polymer electrolyte lithium-ion battery
That is, additives such as plasticizers are added to the solid polymer electrolyte so as to improve the ionic conductivity and make the battery usable at room temperature.
(3) Lithium-ion battery with polymer cathode material
The conductive polymer is used as the cathode material, and its specific capacity is relatively increased. Since the liquid electrolyte is replaced by a solid electrolyte, the polymer lithium-ion battery has the advantages of thinness, arbitrary area, and arbitrary shape compared with the liquid lithium-ion battery. Therefore, the aluminum-plastic composite film can be used to manufacture the battery shell, which can improve the specific capacity of the whole battery; polymer lithium-ion battery can also be used as the cathode material, and its quality specific energy will be increased by more than 20% compared with the current liquid lithium-ion battery. Lithium-ion polymer (Lithium-ion polymer) batteries, with miniaturization, thin, lightweight characteristics. Therefore, polymer batteries, in the market share will gradually increase.
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