Analysis of liquid lithium battery and polymer lithium battery

Li-polymer battery (Li-polymer, also known as polymer lithium battery): It has many obvious advantages such as high energy density, smaller size, ultra-thin, lightweight, and high safety and low cost. It is a new type Batteries. In terms of shape, lithium polymer batteries have ultra-thin characteristics, and can be made into batteries of any shape and capacity according to the requirements of various products. The minimum thickness of this type of battery can reach 0.5mm. Related to lithium batteries The characteristics of lithium polymer batteries are as follows: 1. No battery leakage problem, the battery does not contain liquid electrolyte inside, using colloidal solids. 2. Can be made into a thin battery: with a capacity of 3.6V400mAh, its thickness can be thin Up to 0.5mm. 3. The battery can be designed into a variety of shapes. 4. The battery can be bent and deformed: the polymer battery can be bent up to about 90. 5. It can be made into a single high voltage: the battery with liquid electrolyte can only use several batteries High voltage is obtained by series connection, and polymer battery has no liquid itself, and can be made into a multi-layer combination in a single cell to achieve high voltage. 6. The capacity will be twice as high as that of lithium batteries of the same size. According to the electrolyte material used in lithium batteries Lithium batteries are divided into liquid lithium batteries (LiquifiedLithium-IonBattery, referred to as LIB) and polymer lithium batteries (PolymerLithium-IonBattery, referred to as PLB) or plastic lithium batteries (PlasticLithium-IonBatteries, referred to as PLB). The positive and negative materials used in polymer lithium batteries are the same as liquid lithium ions. The positive electrode materials are divided into lithium cobalt oxide, lithium manganate, ternary materials and lithium iron phosphate materials. The negative electrode is graphite, and the working principle of the battery is basically the same. . Their important difference lies in the difference in electrolytes. Liquid lithium batteries use liquid electrolytes, while polymer lithium batteries are replaced by solid polymer electrolytes. This polymer can be dry or colloidal, and most of them are currently used. Polymer gel electrolyte. The solid solid polymer electrolyte lithium battery electrolyte is a mixture of polymer and salt. This battery has high ionic conductivity at room temperature and can be used at room temperature. Gel-gel polymer electrolyte lithium batteries add plasticizers and other additives to the solid polymer electrolyte to improve ionic conductivity and allow the battery to be used at room temperature. Since polymer uses solid electrolyte instead of liquid electrolyte, compared with liquid lithium battery, polymer lithium battery has the advantages of thinner, arbitrary area and arbitrary shape. Therefore, aluminum-plastic composite film can be used to make battery casings. It can improve the specific capacity of the entire battery; polymer lithium batteries can also use polymers as cathode materials, and its mass specific energy will be more than 20% higher than the current liquid lithium batteries. Polymer Lithium-Ion Battery (PolymerLithium-IonBattery) battery has the characteristics of miniaturization, thinning and light weight. Therefore, the market share of polymer batteries will gradually increase. Disclaimer: Some pictures and content of articles published on this site are from the Internet, please contact to delete if there is any infringement. Previous: What are the charging characteristics of lithium battery packs?