The birth and principle of polymer lithium ion battery

The development process of polymer lithium ion battery 1. The birth and principle of polymer lithium ion battery Lithium ion polymer battery was introduced in 1994 and uses gel polymer electrolyte. This concept was originally developed by Bellcore. Later, Japan's Sony, South Korea's Samsung and other companies developed new structural gel polymer lithium-ion batteries on this basis, and put them into production around 2000. At present, the principle of lithium-ion batteries and the electrochemical reactions during charging and discharging are basically the same as those of liquid lithium-ion batteries, except that gel polymer electrolytes are used. 2. The characteristics of polymer lithium-ion batteries are based on lithium-ion batteries. In addition to the characteristics of lithium-ion batteries, polymer lithium-ion batteries also have the following characteristics: plastics have good elasticity and can be made into batteries of various shapes; safe, reliable, and difficult Combustion; (3) Long cycle life and low capacity loss; (4) High volume utilization, up to 10%~20% compared to liquid lithium-ion batteries; Large batteries can be manufactured without connecting in series; 6. Do not use traditional diaphragms Materials; (7) It is easy for large-scale industrial production; Today, we are applying it to a wider range of fields. Lithium metal is feasible as the negative electrode material of all solid-state polymer lithium-ion batteries. 3. The development and types of lithium-ion batteries. Now, my country has been able to produce polymer lithium-ion batteries, but it is important to improve on the basis of liquid lithium-ion batteries, compared with some different types of gel polymer lithium-ion batteries from Japanese companies To a certain extent, it can only be said that half (quasi) gel-type polymer lithium-ion batteries, some soft packaging can also be said to be liquid lithium-ion batteries. Therefore, the improvement of my country's polymer lithium-ion battery technology requires the continuous efforts and cooperation of industry and academia. According to the January 2005 issue of 'FuturistTherefore, the development of polymer lithium-ion batteries will greatly promote the further development of high-power power generation groups and preparation technologies, and related materials, energy density and performance will continue to improve. Therefore, it is necessary to attach great importance to research and development in this field. To be invincible. 4. Polymer lithium ion battery structure The structure of polymer lithium ion battery is the same as lithium ion battery, nickel hydrogen battery, etc. It generally includes the following components: positive electrode, negative electrode, electrolyte, positive electrode lead, negative electrode lead, etc. 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 article: What are the differences between lithium batteries and polymer batteries?