In 1866, Georges Leclanché invented a battery that consists of a zinc anode and a manganese dioxide cathode wrapped in a porous material, dipped in a jar of ammonium chloride solution. The manganese dioxide cathode has a little carbon mixed into it as well, which improves conductivity and absorption. It provided a voltage of 1.4 volts. This cell achieved very quick success in telegraphy, signaling, and electric bell work.