My research is fuel cell. I need to do a open system fuel cell, but in cathode side always have gas leak. Have any one have experience to tell me, how to prevent gas leak?
Since it's the cathode where the leak is I presume it's the hydrogen you can't hold. Hydrogen is very hard to contain because of it's small molecules. I use plastic glass as its bubbler and a small hose to move it elsewhere. If it's your bubbler where the leakage is insulate it using silicon around the connections/openings.