"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Performance effects of proton exchange membrane fuel cell at various operating temperatures

M. KELLEGOZ1,* , I. OZKAN1, M. S. KILICKAYA1

Affiliation

  1. Eskisehir Osmangazi University, Physics Department, 26480 Eskisehir, Turkey

Abstract

Performance effects of proton exchange membrane fuel cell (PEMFC) at various temperatures of the gases feeding the electrodes were investigated. Experiments have been carried out on two different homemade PEMFCs with hydrogen/oxygen and hydrogen/air feed. On each PEMFC with different feed that have an active area of 9 cm2 Nafion™ NE-1035 as proton exchange membrane (PEM) and electrodes with platinum load of 0.9 mg/cm2 were used. Temperature of humidified gases in 1 atm pressure that feed the PEMFCs kept at ambient temperature (25oC) varies from ambient temperature to 95 oC by 10 oC step. During the experiment backpressures of each type of the PEMFCs held constant at 1 atm and the external load resistance (RL) varies from 0 to 1000 KΩ. In high temperatures the diffusivity of gases increase and mass transport resistance decrease. However, the ion-conductivity of the PEM in ohmic region increases. As a result it was concluded that performance of the PEMFCs depends on the concentration of gases and on the discharge of water (H2O) content formed by electro-chemical reactions..

Keywords

Proton exchange membrane fuel cell, Operating condition, Performance, Polarization characteristic.

Submitted at: Sept. 25, 2007
Accepted at: Feb. 18, 2008

Citation

M. KELLEGOZ, I. OZKAN, M. S. KILICKAYA, Performance effects of proton exchange membrane fuel cell at various operating temperatures, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 2, pp. 369-372 (2008)