Investigation of Corrosion Performance of Pure Aluminum as Bipolar Plate in PEMFC Environment

Corrosion behavior of pure aluminum in sodium fluoride and sulfuric acid media with different concentrations at 80°C for use as bipolar plate in PEMFC environment was investigated. Open circuit potential, single cell operation, amount of corrosion, and surface roughness of pure aluminum were measured to check the corrosion potential, corrosion resistance, corrosion amount, and surface roughness, respectively. Scanning electron microscopic images and energy-dispersive X-ray spectra were also taken to analyze the surface morphology, and elemental compositions.