Batteries

Alessandro Volta made a zinc-plate/brine soaked cloth/copper-plate pile in 1800. 50 years later Daniel, an English chemist, used a porous pot to improve Volta's design. Georges Leclanche in 1866 used the porous pot idea to make another type of wet battery with zinc and carbon/MnO2 electrodes and ammonium chloride.

Dr Carl Gassner developed Leclanche's wet cell into a disposable carbon/zinc dry cell in 1889. The National Carbon Company - later Ever Ready - now Energizer still make carbon/zinc batteries.

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