Hi Dear All,
I have two electrode suppose platinum and Pt-CeO2 coated electrode. I want to developed a methanol fuel cell using this two electrodes. How can I assemble this two electrode using nafion membrane?
You cannot use any electrodes to assemble MEA, rather you can use materials which suspension with 0.05% nafion soln + iso propyl alcohol + water. Now you coat on nafion membrane and allow to dry, later you hot press it about 180 C for 3 minutes. You will get MEA.....
You cannot use any electrodes to assemble MEA, rather you can use materials which suspension with 0.05% nafion soln + iso propyl alcohol + water. Now you coat on nafion membrane and allow to dry, later you hot press it about 180 C for 3 minutes. You will get MEA.....
Please, please don't hot press. It compresses the mesoporosity, leading to water management and reactant transport issues - my papers and several from my group go into exquisite detail on this (Holdcroft + Soboleva, Navessin, Peron).
Ideally, make catalyst inks of your two carbon-supported catalyst and spray coat them onto your membrane. The standard method for making Nafion-based catalyst inks is detailed in this post:
https://www.researchgate.net/post/How_to_make_uniform_PEMFC_catalyst_layer_without_peeling_off#view=5707c793cbd5c28f43050a57
A highly effective method for mounting fuel cells is here (lamination around the edges is 100% necessary for fuel cells with liquid fuel to operate, unless you don't mind using a square of N117 the size of your cell):
https://www.researchgate.net/post/For_Proton_Exchange_Membrane_Fuel_Cells_PEMFCs_can_anyone_guide_me_on_an_easy_way_to_develop_Membrane-Electrode-Assembly_MEA_in_Lab
You will of course need to benchmark using Nafion, but if you want better results, you could talk to FuMA-Tech and ask for their best DMFC-specific membrane; they're easy to deal with, and their hydrocarbon cation-exchange membranes may work better for your application (much lower MeOH crossover and equal or better overall conductance depending on how thick you go), or are at least a good comparison.
Good luck!
I am trying to cast Glucose Oxidase using Nafion (10% w/v) and 3.5 % solution in water to produce membrane to hold the enzyme on stainless steel electrode. But when I run CV in glucose solution the the electrode washed away. Any solution???
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