LECLANCHE CELL (BATTERY)

"One of the earliest practical non-rechargeable batteries (Georges-Lionel Leclanche, 1866). It uses a zinc anode (negative electrode) and a manganese dioxide cathode (positive electrode) with ammonium chloride solution as electrolyte. The initially liquid electrolyte was later ""immobilized,"" and this system became the first dry cell. It is still widely used. See also an Encyclopedia Article. "