Comment by ahartmetz
4 months ago
>All-solid batteries are typically going to be very safe
Sulfur melts at 115 °C though, so when it overheats, it's not solid anymore. But then, it's apparently not just sulfur, but sulfur embedded in some other stuff, so who knows.
Here the sulfur is contained in some kind of borophosphate glass, which should have a significantly higher melting point.