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Cell Temperature in Direct Methanol Fuel Cell Operation

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Cell Temperature in Direct Methanol Fuel Cell Operation ( cell-temperature-direct-methanol-fuel-cell-operation )

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Processes 2020, 8, 353 8 of 10 Figure 10. CCH3OM: Steady-state current density–power density curve. It was observed from Figures 9 and 10 that an increase in the DMFC temperature from 303 K (30◦C) to 333 K (60◦C) led to an increase in DMFC performance, butfor a further increase in temperature beyond its boiling point 333 K (60◦C), DMFC performance was reduced due to the dry-out effect. Hence, it is reported that 333 K (60◦C) is the optimum operating temperature at which a maximum power density of 57.6 mW/cm2 was obtained for a squoval-shaped manifold design (SSMD)-incorporated direct methanol fuel cell. In addition to the studies on temperature, the durability of a DMFC at different load currents, namely 2A, 4A, 6A, and 10A, was also studied.Output voltages were recorded and are shown in Figure 11. It was confirmed by the consistent, steady output that the SSMD-based DMFC was durable at the optimized operating conditions, namely a DMFC temperature of 333 K, a methanol concentration of 1 M, and a methanol flow rate of 1 mL/min. Figure 11. Durability test on a squoval-shaped manifold hole design-based DMFC. 4. Conclusions A direct methanol fuel cell (DMFC) is a particular type of fuel cell that has its own merits. In this work, a direct methanol fuel cell with a 45 cm2 activation area in the MEA, and a Pt-Ru/C catalyst at the anode was fabricated and tested with the squoval-shaped manifold hole design-incorporated DMFC work station available in the laboratory. Performance of the DMFC was evaluated with different operating parameters, namely cell temperature, methanol flow rate, and methanol concentration in simulation. From the simulation results, it was concluded that cell temperature was the most

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