Methanol crossover in direct methanol fuel cells: a link between power and energy density
作者： Bogdan Gurau , Eugene S Smotkin
DOI: 10.1016/S0378-7753(02)00445-7
关键词: Cathode 、 Methanol 、 Power density 、 Methanol fuel 、 Membrane electrode assembly 、 Proton exchange membrane fuel cell 、 Direct methanol fuel cell 、 Anode 、 Chemistry 、 Analytical chemistry
摘要: Abstract Direct methanol fuel cell performance curves were obtained as a function of three parameters, (1) temperature, (2) flow-rate and (3) concentration. Methanol crossover was measured by gas chromatography these parameters at 100 mA/cm 2 in the single-pass delivery mode. The data used to model continuous loop mode where pure is injected into that circulates through flow-field recovers water from cathode. modeled composition identical stream experiments (dilute aqueous methanol). results, presented three-dimensional surfaces, elucidate impact parameter variations on energy power density direct (DMFC) link between those two figures merit. In addition, reasonable estimate contribution mass transport effects due carbon fabric current collectors made along with situ CO stripping membrane electrode assembly (MEA) anode surfaces. analysis shows that, present, serious compromises are required if densities be simultaneously maintained DMFCs using Nafion™ 117 an electrolyte.
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