Membrane Electrode Assembly Modification by Zeolite and Graphene Oxide

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Membrane Electrode Assembly Modification by Zeolite and Graphene Oxide ( membrane-electrode-assembly-modification-by-zeolite-and-grap )

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Method and characterisation 𝑃 = π‘—π‘™π‘–π‘šΓ—πΏπ‘š (3.8) 6Γ—πΉΓ—π‘π‘šΓ—π‘˜π‘‘π‘™ Where P is the methanol permeability (cm2/sec) The permeability of methanol for each prepared MEA was calculated using equation (3.8). The limiting current density values were obtained from linear sweep voltammetry test for each MEA. The concentration gradient (Cm) and drag coefficient values changes with temperature and need a special fuel cell set to measure the concentration gradient rate as a function of temperature. Therefore, the concentration gradient used in this these was brought from reference paper [163, 164]. 3.3 DMFC Assembly The direct methanol fuel cell (DMFC) which was used in this work was manufactured in-house. The following section describes the detail the parts and size of DMFC. Figure β€Ž3.13 Direct methanol fuel cell internal parts 3.3.1 Basic DMFC The DMFC consists of two aluminum plates (thickness of 5mm), two PTFE plates, two graphite bipolar plates, two silicon gaskets, four terminal connections, and four (inlet /outlet) fittings 4mm . Sirhan AL-Batty Page 91

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