Why do you think they are more prone to fire if you admittedly have no data?Rerouter said:I would think they would still be prone to fire, even more reactivitly if the casing was breached, but venting would only occur if heated above the glass transition temperature of the electrolyte. still quite a few generic buzzwords mixed in without much hard data.
Rerouter said:I did not say they will not succeed, like lithium exposure to atmosphere results in a strong reaction with this metal group (soduim), as you are storing more chemical energy in a metal that violently reacts to moisture in atmosphere, i would expect if punctured would still lead to a fire, and being a more reactive metal than lithium i would imagine more spectacular than normal lithium fires (possibly more like popcorn)
however based on the other properties of sodium (noting that it described a pure sodium anode or cathode,) which has a melting point of around 100C, and a higher thermal expansion coefficient than most metals used in the containers (double that of lithium) i feel early variants could have a risk of what would be comparable to venting. and with no liquid to take up the slack . Again, not saying it will not work, and more battery capacity makes all designers jobs easier, i just strongly doubt the reduced fire risk. and similar protections will need to be in place to keep them cool.