Thinking
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Joined: May 2021
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From: The People's Republic of Colorado
Senior Member
Joined: Oct 2017
Posts: 1,728
Likes: 440
From: CA near Frisco
Oil well fires are blown out with nitroglycerin, at times. How about a cement truck... make like a mini-Chernobel? Drop into an open topped wheelable semi-trailer and dump liquid nitrogen on it. What's that system race cars have? Use a bigger of those systems, all hooked into the sealed battery unit. Maybe this will renew hydrogen fuel cell work. Meh... Give me E95 and a 50 gal tank.
Smarter than most Racoons
Joined: Aug 2018
Posts: 2,428
Likes: 1,639
To extinguish a lithium battery fire you must remove heat prevent the fire from overheating nearby cells.
The cells contain both graphite and a metal oxide in the other parts of the cell.
If the cell temperature rises above the temp that releases the oxygen from the metal oxide it will instantly react with the graphite and does not need air to sustain combustion.
This overheat can come from battery damage, battery overpressure, or overcharging.
Metal oxides that hold the oxygen to a higher temp are far safer., but usually have a lower storage capacity. Iron oxide batteries would be safer than cobalt oxide batteries for example.
Also, pure lithium reacts with water in an exothermic reaction to even increase te amount of cooling one must do.
So you must absorb heat and insulate the adjacent cells simultaneously.
This is from memory but should be correct or close to it.
If I get bored later I may look the above up as I'm old.
The cells contain both graphite and a metal oxide in the other parts of the cell.
If the cell temperature rises above the temp that releases the oxygen from the metal oxide it will instantly react with the graphite and does not need air to sustain combustion.
This overheat can come from battery damage, battery overpressure, or overcharging.
Metal oxides that hold the oxygen to a higher temp are far safer., but usually have a lower storage capacity. Iron oxide batteries would be safer than cobalt oxide batteries for example.
Also, pure lithium reacts with water in an exothermic reaction to even increase te amount of cooling one must do.
So you must absorb heat and insulate the adjacent cells simultaneously.
This is from memory but should be correct or close to it.
If I get bored later I may look the above up as I'm old.
Last edited by ultimatenoobie; Jun 24, 2022 at 07:49 PM. Reason: I forgot a step.
Senior Member
Joined: May 2021
Posts: 2,496
Likes: 1,199
From: The People's Republic of Colorado
To extinguish a lithium battery fire you must remove heat prevent the fire from overheating nearby cells.
The cells contain both graphite and a metal oxide in the other parts of the cell.
If the cell temperature rises above the temp that releases the oxygen from the metal oxide it will instantly react with the graphite and does not need air to sustain combustion.
This overheat can come from battery damage, battery overpressure, or overcharging.
Metal oxides that hold the oxygen to a higher temp are far safer., but usually have a lower storage capacity. Iron oxide batteries would be safer than cobalt oxide batteries for example.
Also, pure lithium reacts with water in an exothermic reaction to even increase te amount of cooling one must do.
So you must absorb heat and insulate the adjacent cells simultaneously.
This is from memory but should be correct or close to it.
If I get bored later I may look the above up as I'm old.
The cells contain both graphite and a metal oxide in the other parts of the cell.
If the cell temperature rises above the temp that releases the oxygen from the metal oxide it will instantly react with the graphite and does not need air to sustain combustion.
This overheat can come from battery damage, battery overpressure, or overcharging.
Metal oxides that hold the oxygen to a higher temp are far safer., but usually have a lower storage capacity. Iron oxide batteries would be safer than cobalt oxide batteries for example.
Also, pure lithium reacts with water in an exothermic reaction to even increase te amount of cooling one must do.
So you must absorb heat and insulate the adjacent cells simultaneously.
This is from memory but should be correct or close to it.
If I get bored later I may look the above up as I'm old.
Last edited by COStruck; Jun 24, 2022 at 08:01 PM.
Smarter than most Racoons
Joined: Aug 2018
Posts: 2,428
Likes: 1,639
Senior Member
Joined: May 2021
Posts: 2,496
Likes: 1,199
From: The People's Republic of Colorado