Advanced Materials Research (Volumes 457 - 458), Pages 156-160 (2012)
Investigation of
Passive Direct Methanol Fuel Cell (DMFC) at the Open Circuit Condition
Xian Qi Cao, Ji Tian Han, Ze Ting Yu, Pei Pei Chen
Abstract
A
transparent passive DMFC was constructed to investigate the transients in open
circuit voltage (OCV) and the cell temperature difference, which changed as a
consequence of the methanol crossover phenomenon, including anode temperature
difference (ATD), cathode temperature difference (CTD) and methanol solution
temperature difference (MTD).
Results of experiments performed in a passive DMFC with an active
membrane area of 9 cm2, at ambient temperature and pressure revealed that the
OCV of the passive DMFC became relatively stable as the cell temperature
difference rose to a relatively stable value about 30 min later. Experimental
results indicated that the performance of the passive DMFC could be more
objectively characterized by collecting polarization data simultaneously when
the cell temperature rises to a relatively stable value.
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