SITANGGANG, RAMLI (2003) Diffusion Coefficient of the Dissolved Hydrogen Gas inside the Mesoporous Gas Diffusion Layer of MEA. In: Proceedings The 17th Symposium of Malaysian Chemical Engineers SOMChE 2003-"Role Of Chemical Engineers for Sustainability of Small Medium Industries (SMI), 29-30th December 2003, Shool of Chemical Engineering, Universitas Sain Malaysia - Copthorne Orchid Hotel - Tanjung Bungah - Pinang.
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Diffusion_Coefficient of the Dissolved Hydrogen Gas inside the Mesoporous Gas Diffusion Layaer of MEA.pdf Download (3MB) | Preview |
Abstract
A mesoporous model was develop for the gas diffusion layer (GDL) electrode in order to increase the distribution of hydrogen gas into electrode layer of membrane electrode assembly (MEA) of the PEM fuel cell. This model follow the concetp of Fick's Law to determine the flow of gas within the system. The flow gas distribution parameter is the diffusion of dissoleved gas under the influence of temperature, radius of pore and the molecular weight of gas concerned. From the result obtained for the respective diffusion coefficient, the voltage and the current flow in the electrode can be determinded through simulation using PEM Lab SOftware. The best simulation voltage and current density resutl wil then be used as an indicator in the fabrication of the GDL electrode. The fabircation of the electrode use in verifying the result of this model was performed using the casting technique. The measurement of gas distribution coefficient was done using BET instrument. The simulation result obtained showed that the gas diffusion coefficient distribution inside the GDL follows Fick's law with the dissolved hydrogen gas of 4.3 x 10^-6 m^2 5^-1. Result of the experiment via the GDL mesoporous model showed the pore diameter of 31.78 A, pore volume of 0.09 cc g^-1 and surface area of 253 m^2 g. The voltage and current density of the observed GDL are 1.05 V and 1 Amp/cm^2, respectively. The performance of MEA using observed experimental GDL was compared with GDE from E-TEK and other commercial MEA to be similar. Keywords: Mesoporous; Diffusion coefficient
| Item Type: | Conference or Workshop Item (Paper) |
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| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Chemistry Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Dr.Ir. MT Sitanggang Ramli |
| Date Deposited: | 19 Feb 2018 02:49 |
| Last Modified: | 19 Feb 2018 02:49 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/14537 |
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