Breakthrough in the research of core materials for lithium ion batteries
from： published_at：2018-06-04 18:18:15 pv：222
The study of polymer electrolyte membrane and its lithium-ion battery technology studied by the Chengdu Organic Chemical Co., Ltd. of Chinese Academy of Sciences has recently passed the national "863" subject.
Polymer electrolyte membrane is the key material for the preparation of polymer lithium ion battery (PLIB). It has both positive and negative polarity and ion transmission medium in the battery, and has the association effect on electrolyte salt in order to realize the solid state of electrolyte and make the polymer lithium ion battery have better electrochemical stability and safety. Sex. Therefore, the key technology of polymer lithium-ion battery is polymer electrolyte membrane composition, condensed state structure and membrane preparation method.
Chengdu organic chemical company has successfully prepared polyacrylonitrile colloidal microporous polymer membrane by polymer grafting polymerization and self-developed colloidal microporous membrane forming technology. The membrane absorbs organic electrolyte solution and then becomes a plasticized polymer electrolyte membrane. This technology is the first creation at home and abroad. It has independent intellectual property rights and applied for five Chinese invention patents. It has been granted an authorization and passed the appraisal of the scientific and technological achievements of the Sichuan provincial science and technology department in February 2004.
The polymer electrolyte membrane has high mechanical strength, excellent electrolyte compatibility and stability of electrochemical performance, and can simplify the manufacturing process of polymer lithium ion battery. It has the characteristics of high production efficiency and easy to scale production, which can greatly reduce the manufacturing cost of the battery. The polymer Li ion battery prepared has good electrical properties, excellent cycling and storage stability and safety.