A type of voltaic cell containing lithium or lithium compounds. The most commonly used has a metallic lithium anode and a manganese dioxide (MnO2) cathode, the electrolyte being a solution of lithium salts in an organic solvent. Batteries of this type have an output of about 3 volts. They are more expensive than alkaline batteries, but last longer. Li–MnO2 batteries are also produced in a flat disk form for use in digital watches and other small portable devices. A number of other more specialized lithium primary batteries are available but are not in general use. See also lithium-ion battery.
Subjects: Chemistry — Physics.