As one of the applied technology from Volta cell or Galvani cell, a batery or dry cell is very close to our daily lives. Patented first time by George Leclanche on 1866, a batery consist of an insulator, a carbon stick as catode, pasta in the center of the batery which rolled and give a space between catode and anode, and also the anode itself is zinc.
The carbon stick isn''t reactive, or could be said as inert. The pasta which have mentioned before consist of a carbon material, the outer side of it is also a pasta from electrolyte materials. Despite of being known as dry cell, in fact a batery isn''t completely dry. That batery is called as dry cell because its electrolyte is in a pasta form and can''t be categorized as a liquid. This is quite different with the other type of batery. This kind of batery produce just a little potential cell, about 1.5 volts, but its usage in our daily lives can''t be separated.