Journal of Applied Mechanical Engineering

Gülsah Özisik

Publications

• Research Article
  The Effect of Microporous Layer in Phosphoric Acid Doped Polybenzimidazole Polymer Electrolyte Membrane Fuel Cell
  Author(s): Muhammet Çelik, Gülsah Özisik, Gamze Genç and Hüseyin YapiciMuhammet Çelik, Gülsah Özisik, Gamze Genç and Hüseyin Yapici
  
  A polybenzimidazole (PBI) based polymer electrolyte fuel cells, which called high temperature polymer electrolyte fuel cells (HT-PEMS), operate at higher temperatures (120-200°C) than conventional PEM fuel cells. Although it is known that HT-PEMS have some of the significant advantages as non-humidification requirements for membrane and the lack of liquid water at high temperature in the fuel cell, the generated water as a result of oxygen reduction reaction causes in the degradation of these systems. The generated water absorbed into membrane side interacts with the hydrophilic PBI matrix and it can cause swelling of membrane, so water transport mechanism in a Membrane Electrode Assembly (MEA) needs to be well understood and water balance must be calculated in MEA. Therefore, the water diffusion transport across the electrolyte should be d.. View More»
  DOI: 10.4172/2168-9873.1000133

  Abstract PDF