The EPA began monitoring for hydrogen fluoride, a highly toxic gas produced by lithium-ion battery fires, and for particulate ...

This converts the lithium at the interface into lithium fluoride (LiF). It is important to note that the lithium atoms of the cathode material remain as ions, that is, as positively charged particles.

"For lithium fires we worry about hydrogen fluoride, which is a chemical that's released from these fires. In small amounts, it can cause irritation of the eyes and lungs and an irritation of the ...