Thermally activated batteries lithium/iron disulfide

Thermally activated batteries, commonly known as "thermal batteries", are batteries that can be activated by the combustion of pyrotechnic compositions. They can remain permanently installed in the systems to be powered without loss of capacity through self-discharge, thanks to their total inertia in the non-activated state. Once activated, they must be used immediately, but cannot be reused. Activatable batteries were described in the articles "Electric batteries – Activatable batteries" [D 3 323] and "Accumulators – High-temperature accumulators" [D 3 355] . This article is devoted entirely to the description of the electrochemical lithium/iron disulphide system Li/FeS ₂ .