EV Battery Fires Preventable With Extra Lithium Salt
Lithium-ion battery fires may not be all that common, but they are a concern — at least for electric vehicle makers and Samsung. However, EV battery fires they can be prevented with just a little something.
Thankfully, research at Stanford might reduce the chances of those devices lighting up. Scientists have developed an electrolyte (the substance that carries lithium ions between electrodes) that won’t catch fire even at temperatures of 140F or more. The trick, it turns out, was extra lithium salt, Yahoo reported.
The team added as much of a particular lithium salt (LiFSI) as possible to a polymer-based electrolyte, bumping the mix from less than half of the electrolyte’s weight to 63 percent. The LiFSI served as an “anchor” for flammable solvent molecules, preventing them from catching fire. The combination lets a lithium-ion battery continue functioning at temperatures as high as 212F.
Unlike other attempts at non-flammable electrolytes, the polymer-based design is gooey and can fit into existing lithium-ion battery components. That lowers the costs and lets companies use their current manufacturing processes.
You could see the technology reach real-world products quicker than rivals that would require custom (and potentially expensive) production methods.
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