Composite gel membrane to enhance the safety of lithium batteries

Recently, the CAS Ningbo Institute of Material Technology and Engineering Laboratory power lithium battery project designed and prepared crosslinked gel composite membrane based on polyimide nonwoven . Combines the dual advantage of such a nonwoven fabric separator and a gel polymer electrolyte membrane . The membrane preparation method is simple , easy to implement industrialization .
Which , as a non-woven material bottom mold diaphragm gives excellent thermal dimensional stability , Masking tape

can effectively prevent short-circuit the battery explosion in the state due to heat and melt the diaphragm contraction occurred. And internally crosslinked polyether membrane component of the composite membrane having a long term stability , and can form a gel polymer electrolyte is the electrolyte solution to swell. This design enhances the stability of the electrolyte within the separator , the nonwoven fabric alone to overcome the serious problems diaphragm leakage , further enhance the safety of the battery during use of the . Further , such membrane also exhibits more excellent than the product PP membrane electrochemical performance.Washi tape

Recognized as an ideal lithium battery energy storage element has been great concern. However, in recent years a series of lithium battery electric cars on fire incidents indicate that security has become a primary bottleneck power lithium battery electric vehicle development . In the structure of the lithium battery , the inner membrane is one of the key components , the use of plastic film which can isolate the battery positive and negative electrodes to prevent a short circuit . Thus , the diaphragm has an important relationship with a battery safety .Sellotape