Efficiency Proton Exchange Membrane Fuel Cell Affects Compression Force
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Abstract
Gas diffusion layer (GDL) is a major part, which affects proton exchange membrane fuel cell (PEMFC) performance. It can be role on electron conductivity and mass transport within fuel cell. This research was studied compression and porosity in diffusion layer for assembly PEMFC which they are independent to performance fuel cell. There was built assembly fuel cell machine for assembled fuel cell and compare performance with fuel cell assembled by compressed force from not. Gasket in this research made from Teflon of thickness 125, 175 and 225 microns, they had porosity in 0.16, 0.4 and 0.53, respectively. It was found relationship between porosity and thickness that decreased thickness was porosity decreased too.
This research used 10,000, 12,000, 14,000, 16,000 and 18,000 N/m2 in torque and flow rates were 200, 300 and 400 sccm. The results showed that the maximum efficiency of the fuel cell occurred at the 16,000 N/m2, flow rate of 300 sccm and porosity in 0.53 provided maximum power of 12.32 W at voltage of 0.44 and 28 A. The performance of the PEMFC from assembly fuel cell machine was compared with the PEMFC assembled by nut. The result of fuel cell from assembly fuel cell machine was similar to the fuel cell assembled by nut. However, fuel cell from assembly fuel cell machine delivered higher performance. It provided 4.8% higher than the fuel cell assembled by nut. Thus, assembly fuel cell machine can be used.
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References
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