From BRAVE AI:
Manganese can be extremely flammable,
Based on the search results, manganese dust (finely divided) has been known to be pyrophoric, meaning it can spontaneously ignite in air. Additionally, manganese compounds and fumes can react violently or explosively on contact with water, generating hydrogen gas, an extremely dangerous explosion hazard.
Firefighting Considerations
When fighting fires involving manganese, it is crucial to avoid using water, as it can exacerbate the situation by generating hydrogen gas. Instead, use dry sand, graphite powder, dry sodium chloride-based extinguishers, or class D extinguishers. Confining and smothering metal fires is preferable rather than applying water. If possible, move undamaged containers away from the area around the fire to prevent further ignition sources.
Handling and Storage
To minimize the risk of manganese fires, it is essential to handle and store manganese-containing materials in a well-ventilated area, away from heat sources and ignition sparks. Ensure that containers are tightly sealed and not damaged, and consider implementing explosion-proof equipment and ventilation systems.
Personal Protective Equipment
While there are no specific recommendations for personal protective equipment (PPE) for manganese exposure, it is still important to follow standard safety protocols when handling manganese-containing materials, including wearing protective clothing, gloves, and eye protection as needed.
These cells have the manganese already oxidized as LiMnO2 the manganese cannot burn as the manganese is already in its oxidized state. Only the lithium ion moves leaving still oxidized manganese behind as the lithium ion moves from anode to.cathode. Depending on the electrolyte those could be flammable or not. Using a solid state ceramic electrolyte eliminates that fluid all together as ceramic lithium conductive glass is not burnable. Lithium in ion form is also not flammable it’s in the -OH or -CO3 or some other ionic form.