Flammability

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Carbonate solvent

The organic liquids that dissolve the lithium salt: cyclic ethylene carbonate, which forms a stable SEI, blended with linear carbonates such as DMC or EMC to lower viscosity. All are flammable, which is a root of lithium-ion fire risk.

Fire suppression

Systems that cool or smother a battery fire: water mist and flooding for cooling, inert gas or aerosol for enclosed storage containers. Because the cell makes its own oxygen, suppression mainly limits spread and cools neighbours rather than extinguishing the failing cell.

Solid-state battery

A cell whose electrolyte is a solid rather than a liquid. It removes the flammable solvent and may allow a lithium-metal anode, but needs intimate solid–solid contact and, for most chemistries, stack pressure to keep it.

Thermal runaway

Self-accelerating heating in a cell: heat speeds up reactions that release more heat, until the cell vents, catches fire or ruptures. An internal short, overcharge or external heating can trigger it.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

1. Thermal runaway mechanism of lithium ion battery for electric vehicles: A review

   Xuning Feng et al. · Energy Storage Materials · 2018

   Topic background · Electrical, mechanical and thermal abuse; thermal-runaway mechanisms and propagation.