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This isn't a technology problem but a physics one: How do you sink a lot of heat energy from a chunk of material that responds to water by reacting and generati
by mrguyorama 3y ago
This isn't a technology problem but a physics one: How do you sink a lot of heat energy from a chunk of material that responds to water by reacting and generating a lot of heat?
Gasoline carries much more energy than a lithium battery, but spraying it with regular water (I don't know if this is actually common) could disperse the fuel and sap the heat easily, killing two parts of the fire triangle.
You just can't do that with a lithium battery. Other fluids which can soak up massive amounts of energy have other problems, like being very toxic.
You can't disperse the fuel either, because lithium will react with water anywhere it finds it. There's not that much lithium in a battery, but it's enough to keep re-igniting the rest of the battery.
- darkclouds 3y agoCO2 or a carbonate seems to be key. Lithium ion batteries are like semtex or rocket fuel, their weakness is they cant be dispersed easily due to their solid compact nature unlike petrol or diesel or gas vapours which can all be dispersed easily, typically with water, and to transfer heat. A hose that produces a fine mist of water has water droplets with greater surface area with less volume of water which then enables the heat to be absorbed by the water. So the problem seems to be dispersing or containing the reaction to limit damage.