TY - GEN
T1 - A methodology for the estimation of proton diffusivity in proton exchange membranes
AU - Huan, Tan
AU - Pochiraju, Kishore
PY - 2007
Y1 - 2007
N2 - The diffusivity of hydrogen protons is a crucial parameter affecting the performance of the Proton Exchange Membrane Fuel Cell (PEMFC). The analysis presented in this paper leads to a methodology for determining the diffusivity of hydrogen protons in a Proton Exchange Membrane (PEM). In this method, a simulation is performed to obtain a correlation between the value of diffusivity and the time to reach the steady state in proton concentration profiles within the PEM. The proton diffusion is assumed to follow Fick's law, which assumes a concentration independent diffusivity. In addition to the simulation, an experiment, which monitors the variation of voltage output of a PEMFC, is performed. The experimentation determines relationship between the voltage output and the time required for the voltage output to reach steady-state. A correlation with the simulated steady state analyses from the model determines the diffusivity of the PEM. Numerical and experimental results are presented for a membrane available commercially.
AB - The diffusivity of hydrogen protons is a crucial parameter affecting the performance of the Proton Exchange Membrane Fuel Cell (PEMFC). The analysis presented in this paper leads to a methodology for determining the diffusivity of hydrogen protons in a Proton Exchange Membrane (PEM). In this method, a simulation is performed to obtain a correlation between the value of diffusivity and the time to reach the steady state in proton concentration profiles within the PEM. The proton diffusion is assumed to follow Fick's law, which assumes a concentration independent diffusivity. In addition to the simulation, an experiment, which monitors the variation of voltage output of a PEMFC, is performed. The experimentation determines relationship between the voltage output and the time required for the voltage output to reach steady-state. A correlation with the simulated steady state analyses from the model determines the diffusivity of the PEM. Numerical and experimental results are presented for a membrane available commercially.
KW - Diffusion model and experimentation
KW - Proton diffusion
KW - Proton exchange membrane
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M3 - Conference contribution
AN - SCOPUS:34748880627
SN - 1934551007
SN - 9781934551004
T3 - International SAMPE Symposium and Exhibition (Proceedings)
BT - SAMPE '07
T2 - SAMPE '07: M and P - From Coast to Coast and Around the World
Y2 - 3 June 2007 through 7 June 2007
ER -