Visitors tour a booth at InterBattery 2022, an international exhibition on rechargeable batteries, at COEX in Seoul on March 17, 2022. (Yonhap)
DAEJEON, Oct. 21 (Korea Bizwire) — A South Korean research lab said Thursday it has developed a new additive to improve the flame resistance of rechargeable batteries.
The Electronics and Telecommunications Research Institute announced that the newly-developed fluorosulfuric acid-based flame resistance additive features superior flame resistance and safety compared to existing triphenyl phosphate (TPP) flame retardants.
Electrolyte additives are a key ingredient for the improvement of electrochemical safety and the performance of secondary cells.
Despite having a flame resistance effect, existing TPP flame retardants have limits in usage, among others, the need to use a large volume and the increase in interfacial resistance between the electrode and electrolyte.
The research team overcame the weakness of an existing TPP flame retardant by compounding it with a fluorosulfuric acid-based flame resistance additive.
Compared to the electrolyte treated with an existing TPP flame retardant, the new additive contributes to improving the effect of flame resistance by 2.3 times and the performance of secondary cells by 1.6 times.
Kevin Lee (kevinlee@koreabizwire.com)
