No Added Chemicals

Fuel cell can be described as it can directly convert the chemical energy that is carried by hydrogen fuel into electrical energy and it is suggested that as the final step in a hydrogen economy. Moreover, fuel cells are unique in terms of the variety of potential application, from small electronic devices up to power plants. Sir William R. Grove

Most of the portable electronic devices in these day use battery as the power source. In this section, we will see how chemistry is applied into our daily life through battery. Battery is already known for a long time ago and the earliest battery was dated around 250 BC and 640 AD. It was found by Wilhelm Konig in 1938, but no one known the exact application. Many scientists suggest it might be used for electroplating. Schematic diagram of Baghdad Battery

The values of standard electrode potentials are given in the table below in volts relative to the standard hydrogen electrode and are assembled from references The values are for the following conditions: