Eniya Listiani Dewi Listiani (Deputy for Information, Energy and Materials Technology (TIEM) BPPT)


Fuel cells are alternative energy production generator that produces heat and electricity via an electrochemical reaction. It does not need recharging so long as hydrogen and oxygen fuel are supplied. Among them, polymer electrolyte fuel cell (PEFC) using proton exchange membranes (PEM) is recognized by the world as the main candidate to replace the internal combustion engine in backup power, portable power, transportation applications and also in stationary uses. Furthermore, in applications of stack PEFC, the operation conditions should be known completelly. Here in we have studied the hydrogen mass transfer of operated 7 cells stack polymer electrolyte fuel cell (PEFC) with MEAs commercials, flow rate of hydrogen and operational temperature have been varied on overall reactions in the range of 10-85 mL/min and 28-55 oC. The reactions rate was conducted by the fuel flow rate rather than the operational temperature. The calculation of potential and current of operated cells were used to determine the correlation of reaction flow rate coefficient and fuel or temperature, as ko = 5,7510x10-5.Q0,3566 and ko = 0,007223 exp(-1002,1/T). In summary, the effects of mass transfer rate was more dominant for the overall reactions rather than the chemical reaction rate.

Keywords: polymer electrolyte fuel cell, hydrogen energy, reaction coefficient, mass transfer.

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