DMFC is a promising future technology for converting energy. DMFC has several advantages over PEMFC such as high power to weight ratio and high energy density. Moreover methanol is much easier to produce, store, and transport than hydrogen. Commercialization of DMFC will have a tremendous effect on hydrogen economy and alternative energy sources. Bipolar plate is an important component of direct methanol fuel cell which has intricate flow field design. SS 316 bipolar plate material was proposed as a better alternative to the commercially used graphite. Flow field was designed and proposed by focusing on different issues of DMFC. Polarization tests were performed to determine the output current density under different experimental conditions (temperatures and pressures) to optimize the DMFC performance. Long term test was earned out for 100 hrs on SS 316 bipolar plates at 70 deg C and 200 kPa and a constant open circuit voltage (OCV) of 0.614 V was achieved. MEA was characterized by the EDS analysis and there was no dissolution of SS 316 during the experiment in the fuel cell environment.
Stainless steel bipolar plates for direct methanol fuel cells (DMFC)
Bipolare Platten aus nichtrostendem Stahl für direkte Methanol-Brennstoffzellen (DMFC)
2005
7 Seiten, 6 Bilder, 1 Tabelle, 11 Quellen
Conference paper
English
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