All batteries comprise two electrodes at which select chemical reactions occur to produce a stream of electrons flowing from one electrode to the other. One reaction is an oxidation, where electrons are liberated, the other is a reduction, where electrons are consumed. The voltage difference between these two reactions and the flow of electrons are the driving forces that enable the battery to provide electrical power.
In a lithium Energizer battery, lithium (a light-weight, highly energetic metal) is the negative electrode and a mixture of carbon black, a polymer binder and iron disulfide form the positive electrode. A porous separator and a mixture of a lithium salt dissolved in an organic solvent round out the general composition of this battery. The separator prevents electrical shorting of the two electrodes and the lithium salt in the solvent forms the battery electrolyte.
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