Rowshanzamir - enewable Energy Group, Green Research Center Iran University of Science and Technology, Tehran, Iran
H.Eikani - Iranian Research Organization for Science & Technology

Results on the research and development of a one kilowatt phosphotungstic acid fuel cell stack including the assembly of a single cell and module of 17-cells are presented. The important characteristics of the systems are: (i) Phosphotungstic acid, H3PW12O40.29H2O, (i.e.; PWA) is introduced as a solid electrolyte; (ii) Bipolar plates were fabricated using Au-plated Aluminum and internal manifolding was employed for distribution of gases into the cells; (iii)internal distribution of gases to the cells was done using parallel manifolding; (iv) air cooling plates distributed every two cells throughout the stack for heat exchanging purpose; (v) the reactant gases were externally humidified using temperature controlled humidification vessels. Results indicate with a proper stack design, good performance efficiencies are possible.

fuel cell, phosphotungstic acid , stack design