| Title |
Effect of KOH Electrolyte and H2O2 Depolarizer on the Power Characteristics of Al/Air Fuel Cells |
| DOI |
https://doi.org/10.5370/KIEEP.2015.64.4.303 |
| Keywords |
Al/Air fuel cell ; KOH electrolyte ; H_2O_2 depolarizer ; Maximum power ; Internal resistance ; polarization effect |
| Abstract |
The effects of additive such as H_2O_2 in KOH electrolyte solution for the Aluminum/Air fuel cell were investigated with regard to electric power characteristics. The power generated by a Al/Air fuel cell was controlled by the KOH electrolyte solution and H_2O_2 depolarizer. Higher cell power was achieved when higher KOH electrolyte concentration and higher H_2O_2 depolarizer amount. The maximum power was increased by the increase amount H_2O_2 depolarizer, it was found that H_2O_2 depolarizer inhibits the generation of hydrogen and the polarization effect was reduced as a result. Internal resistance analysis was employed to elucidate the maximum power variation. Higher internal resistance created internal potential differences that drive current dissipating energy. In order to improve the output characteristics of the Al/Air fuel cell, it is thought to be desirable to increase the KOH electrolyte concentration and increase the H_2O_2 addition amounts. |