Recently, we built up a new fuel cell station. But I cannot reproduce my old data for a while at other test station even use commercial one. I am not sure where is wrong.

I've tried some conditions and variables: MEA fabrication (including CCM, CCL, new ionomer, new catalyst, dispersion solvent ratio, spray-coating, hand-brushing...etc.) and test condition (anode/cathode flow rate, humidity, cell temperature...etc.), but still no production of current and power. OCV was normal (around 1-0.9 V).

So I started to consider about the test station, however, I am not familiar with this. Maybe is the cable(but VOM meter test no problem) or over connection(I need two terminals to connect cell because the types of electrode are different. I'm not sure this will have too much resistance that make current no produce or not).

And another question is, after cell test, CCL cannot stick on the AEM. Will there is the reason why make current produce? (but I used CCM still not produce current at all)

This bother me for a while. Can anyone help me? I will be really appreciate you.