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1.0g of 5% Nafion solution £¬0.125 g of Pt/CB, stir  for 1 hour.
Add 0.5 g glycerol and stir for 15 minutes.
Add 50 mg of 1 M Tetra Butyl Ammonium hydroxide/methanol, Stir for  1 hour.
Add 0.5g of glycerol again, and stir for 24 hours.
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Clean Teflon film and dry them. Lightly spray them with a Teflon release agent and, record their weights.
With an camel hair brush, paint a coat of catalyst ink on the film and put them in a 140¡ãC drying oven for 1 hour. Check their weights and repeat the painting (paint 90¡ã to previous direction) and drying until the desired loading is achieved.
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Cut Nafion 112 PEM to the desired size. Exchange membranes to Na form.
The painted side of two decals are placed facing each other on either side of a dried Na form membrane. The stainless steel holder is placed in a 210¡ãC preheated hot press and compressed to 0.8 MPa for 5 min. The decals are then peeled away from the membrane leaving the catalyst electrodes fused to the membrane (CCM). Boil CCM in 0.5 M H2SO4 for 1 hr.
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GDLs are cut to fit the particular size electrodes. GDL/CCM/GDL can be hotpressed for better contact, or directly inset into a cell.

[ Last edited by takasaki on 2007-9-6 at 12:57 ]
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[ Last edited by sos20002000 on 2007-9-9 at 21:56 ]
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