What is the difference between polymer lithium battery and lithium battery

What is the difference between polymer lithium battery and lithium battery? 1. Raw material Polymer battery refers to the use of polymer materials in at least one of the three major components of the positive electrode, negative electrode or electrolyte. Macromolecule means high molecular weight, and the corresponding concept is small molecule. Macromolecule has high strength, high toughness and high elasticity. In addition to the inorganic compounds of lithium batteries, polymer battery cathode materials can also use conductive high molecular polymers; polymer electrolytes include polymer electrolytes (solid or colloidal) and organic electrolytes, and lithium batteries use electrolytes. 2. Different shape polymer lithium battery can achieve thinner, arbitrary area and arbitrary shape, because its electrolyte can be solid or colloidal rather than liquid. Lithium batteries use electrolyte and require a solid shell as a The secondary package contains the electrolyte. Therefore, this also makes the lithium battery a new part of the weight. 3. Safety Most of the current polymers are soft pack batteries, which use aluminum plastic film as the outer shell. When organic electrolytes are used inside, they will not explode even if the liquid is hot, because aluminum plastic film polymer batteries use solid or colloidal forms. The leaking liquid just ruptured naturally. But nothing is absolute. If the instantaneous current is large enough and a short circuit occurs, it is not impossible for the battery to spontaneously ignite or burst. The safety accidents of mobile phones and tablet computers are mostly caused by this situation. The lithium iron phosphate battery has undergone strict safety tests and will not explode even in severe collisions. 4. Battery cell voltage Since polymer batteries use polymer materials, they can be made into a multi-layer combination to achieve high voltage, while the nominal capacity of lithium battery cells is 3.6V. If you want to achieve high voltage in actual use, A number of batteries must be connected in series to form an ideal high-voltage working platform. 5. The solid electrolyte ion conductivity of the conductive polymer lithium battery is low. At present, it is important to add some additives to make it a gel electrolyte to improve the conductivity. This is just a new addition of ionic conductivity, unlike the conductivity of lithium batteries to maintain a stable value, and will not be affected by the quality of auxiliary materials. 6. Price This is the key factor that determines the market capacity of the two. At present, the price of polymer batteries on the market is generally higher than that of lithium batteries, which affects the market capacity of the two. The ratio of the former to the latter is 1:9. Classification of polymer lithium batteries: 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 battery is to add plasticizers and other additives to the solid polymer electrolyte to improve the ionic conductivity, so that the battery can be used at room temperature. Polymer battery: Because solid electrolyte is used instead of liquid electrolyte, compared with liquid lithium battery, polymer lithium battery has the advantages of thinner, arbitrary area and arbitrary shape, so aluminum-plastic composite film can be used to make battery casing , Which can improve the specific capacity of the entire battery; 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. If there is any infringement, please contact to delete. Previous: What are the external factors that affect the life of lithium battery packs?