Explain the difference between polymer battery and lithium ion battery in detail

The difference between polymer batteries and lithium-ion batteries The concept of lithium-ion batteries is used very frequently. With a little attention, we will find that there are actually three differences between this concept: wide, narrow and narrow. Lithium-ion batteries in a broad sense include lithium primary batteries and lithium-ion batteries; because lithium-ion batteries are more widely used than lithium primary batteries, lithium-ion batteries usually refer to lithium-ion batteries in a narrow sense; there are two types of lithium-ion batteries: liquid polymer lithium ion Batteries and lithium ion batteries, because the mass is larger and more fluid lithium ion batteries, the narrow understanding of lithium ion batteries refers to liquid lithium ion batteries, polymer lithium ion batteries and lithium polymer batteries. People are used to Polymer battery. If the difference between lithium polymer batteries and lithium ion batteries is broad and narrow, the only difference is the relationship between the concept of species and the concept of genus. Lithium polymer batteries are included in lithium ion batteries. Therefore, the comparison is narrow: polymer batteries are compared with liquid lithium-ion batteries. Based on this, the following lithium-ion batteries refer to liquid lithium-ion batteries. 1. The fundamental difference lies in the raw material, which is the general source of its various performances. The polymer battery refers to the use of at least one of the three components of the polymer material is positive, negative or electrolyte. The macromolecule refers to the mass of the macromolecule, and the corresponding concept is the small molecule. The macromolecule has high strength, high toughness and high elasticity. Currently, polymer battery materials are mainly used for positive electrodes and electrolytes. In addition to using inorganic compounds for lithium ion batteries, polymer battery anode materials can also use conductive polymers; (2) The electrolytes of polymer batteries include polymer electrolytes (solid or colloidal) and organic electrolytes, and lithium ion batteries use electrolytes (liquid Or colloidal state) 2. In terms of molding, the polymer battery can be thin, any area, any shape, because its electrolyte can be solid or gel instead of liquid, while lithium-ion batteries use electrolyte, which needs a strong The casing serves as a secondary package to contain the electrolyte. Therefore, lithium-ion batteries have added some weight. 3. Safety: Most of the current polymer batteries are soft-packed batteries, with aluminum-plastic film as the outer shell. When the organic electrolyte is used inside, the liquid will not explode even if the temperature is high. However, nothing is absolute. If the instantaneous current is large enough to cause a short circuit, it is not impossible for the battery to spontaneously ignite or burst. Most of the mobile phone and tablet computer security accidents are caused by this situation. 4. Battery voltage: Because the polymer battery is made of polymer materials, it can be made into a multi-layer combination in the battery to achieve high voltage. The rated capacity of the lithium-ion battery is 3.6v. If the above characteristics are used to compare polymer batteries and lithium-ion batteries, the conclusion is affirmative. But lithium-ion batteries still dominate the market, which shows that lithium-ion batteries also have comparative advantages. Let's continue the comparison. 5. Conductivity: The conductivity of solid electrolyte ions in polymer batteries is relatively low. At present, it is important to add some additives to make it a gel electrolyte to improve conductivity. This will only increase the conductivity of the ions. Unlike lithium-ion batteries, the conductivity maintains a stable value and does not depend on the quality of the auxiliary materials. 6. Capacity: The capacity of polymer batteries has not been effectively improved, and it is still somewhat lower than standard lithium-ion batteries. 7. Manufacturing process: the thinner the polymer battery, the better the production effect; the thicker the lithium-ion battery, the better the production effect; this makes lithium-ion batteries have more room for expansion in the application field. 8. Price: This is the key factor that determines the market capacity of the two. At present, the price of polymer batteries is generally higher than that of lithium-ion batteries, which affects the market capacity of both. It is difficult to absolutely say that polymer batteries and lithium-ion batteries are better. They are different. If you say that polymer batteries are smaller in applications, and lithium-ion batteries are more promising in large-scale applications, if polymer batteries can break the price And the design limit may represent the development trend of the battery, because it conforms to the trend of environmental protection and safety. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.