Hydrochloric acid (HCl) is used in certain types of primary (non-rechargeable) batteries like the zinc-carbon batteries often used in flashlights and remote controls.
Methanesulfonic acid (CH4SO3H) is sometimes employed in lithium-ion batteries due to its stability, thermal properties, and ability to conduct lithium ions.
Hydrofluoric acid (HF) finds limited use in specialized batteries, particularly high-temperature proton exchange membrane (PEM) fuel cells.
Battery technology continues to evolve, so there may be variations and advancements in the types of acids utilized in different battery systems.
