Leclanche Cell

A electrolytic cell also known as a dry cell that uses a moist paste rather than a liquid as an electrolyte. Flashlight batteries are dry cells with a zinc cup for an anode, a carbon rod for a cathode, and a paste made of powdered carbon, NH₄Cl, ZnCl2, and MnO₂ for an electrolyte.

Zn + 2 MnO₂ + 2 NH₄Cl -> ZnCl₂ + Mn₂O₃ + 2 NH₃ + H₂O

The EMF of the cell = 1.5V

See also: Battery.