If The Future Is Packing Hundreds of Li-Ion Cell Batteries Together, Highly-Flammable Cell Batteries Do Need To Be Made Less Flammable and Lot More Safer. Highly-Flammable Cell Batteries Weren't Meant To Be Packed So Many Together Without Any Built-In Fire Retartant Or Fire Suppression Mechanisms. Try Packing People Together So Without Any Flare-Ups Or Drama.
So One Novel Approach Is To Add The Right Flame Retardant Chemicals To The 'Liquid' Electrolytes In The Batteries. It's A Small Fix With Big Gains! The Right Flame Retardant Additives To The Battery Electrolytes Can Make Li-Ion Batteries Less Flammable And So Much Safer.
The Nice Thing About This Approach Is It Doesn't Require Any Change To The Existing Battery Production Process At All. Just A Small Additive To The Electrolytes' Slurry During Its Mixing. Small Additives Has Been Shown Not To Affect The Battery's Performance And Cycles Too.
New Fluorosulfate-based Flame Retardant Additives Can Be More Effective In Smaller Amounts Than The Current Phosphorous-based Flame Retardant Additives Requiring Larger Amounts.
First Fluorosulfate-Based Flame Retardant Electrolyte Additive.
An electrolyte additive is a substance that is added in a small amount to battery's electrolytes. Existing conventional phosphorous-based flame retardant additives had flame retardant properties, but a large amount was required.
Accordingly, the ETRI research team analyzed more than 10 types of commercially available phosphorous flame retardants through electrochemical experiments, then synthesized a fluorosulfate-based flame retardant additive for the first time, and improved the shortcomings of convetional phosphorous flame retardants.
A fluorosulfate-based flame retardant additive with significantly improved flame retardant properties, electrochemical stability, and cell performance compared to triphenyl phosphate (TPP), a phosphorous flame retardant widely known as a conventional flame retardant (not yet commercialized).
As a result, it was confirmed that the new fluorosulfate-based electrolyte additive's flame retardant properties were improved by 2.3 times and the performance of the battery by 160%, compared to the electrolyte to which conventional phosphorous-based flame retardant additive was applied.
In addition, this fluorosulfate-based flame retardant additive has the advantage of being easy to commercialize as it can be used even with a small amount of additive without an additional process change to the existing lithium-ion battery production process.
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