ExSp33db1rd,
[...] I've read a couple of posts that suggest that Boeing changed to Lithium Magnesium -so that's alright then, I'd rather be on board a 787 suffering a serious Lithium Magnesium fire than a Lithium Cobalt fire. Much more comforting on an ETOPS sector.
Just to clarify, the talk is about Lithium-
Manganese, as an alternative to -Cobalt, not
Magnesium. Totally different stuff.
Technically both types use oxide, and not elementary metallic Cobalt or Manganese.
Yes, Magnesium can burn very hot, and continues burning under water and under CO2, but Manganese is quite different.