Production method of fuel cell
60 wt% Na2SO4 and PTFE emulsion were mixed, dispersed with absolute ethanol, heated in a 90 ° C water bath and stirred, the pellets rolled into a film, that is, waterproof breathable film, cut into a certain size, stand-by.
The resulting colloid was poured into a funnel, evacuated and the filter cake was left in air at 95 ° C for about 2 hours.
Polyethylene glycol as a surfactant, mixed with the catalyst mixture, stirring about 015 hours, add a small amount of distilled water, to be colloidal after stopping the stirring. The surfactant acts as a wetting catalyst mixture.
Acetylene black and PTFE were mixed in a certain proportion, followed by grinding in a high-speed ball mill for about 015 hours. The catalyst powder was ground for about 1 hour to obtain a catalyst mixture.
Stainless steel mesh (80 mesh) for the collector network, after processing cut into a certain size. The stainless steel mesh and the waterproof breathable film are placed on the dried filter cake in turn. And then roll forming, adjust the roller spacing, and repeatedly pressed into a certain thickness of the electrode.
