Solid cathode lithium cells

These cells use solid cathode materials such as MnO₂, CuO, V₂O₅ and carbon monofluoride, (CF)_n. They have the advantage of not being pressurized, although they cannot be discharged as rapidly as liquid cathode cells. They are available in button and cylindrical forms. About 80% (by number) of all lithium batteries in use are of the Li/MnO₂ type. The energy density is similar to that of the Li/SO₂ cells when discharged slowly and their slow self-discharge characteristic make them suitable for memory backup, watches, calculators, cameras, mines and munitions, etc. Voltage delay appears to be less of a problem with solid cathode cells.