KARPEN PILE

[profitis]

Make sure that your gold-plating solution has wetting properties otherwize we'l get micro-patches exposed carbon

[profitis]

I think your palladium was slightly poisoned after you induced electrolysis btw pomodoro.a tiny bit sulfate ion reduced all way to H2S creating that dip anomaly.this is why I'm against any hydrogen production from sulfates. H2SO4 + 8H+ + 8e- > H2S + 4H2O. 0.3v

[pomodoro]

I need to re palladise my electrodes,   cells, even in alkali, are not responding well when oxygen is reintroduced. Don't ask me how anyone can seriously test these cells at home. It seems oh so easy on paper, but so much goes wrong.
I may end up using some clear plastic test tubes to make fused electrode, sealed versions of the Pd/Pt NaOH Cu hydrogen cell and call it quits if it dies.

[profitis]

Try cathodizing hectic in NaOH to drive sulfides back into solution and restore activity in the same manner as silver is cleaned from Ag2S pomodoro.use a cheap graphite anode

[profitis]

Don't call it quits before you have built and tested my suggested pt(black)/pt(etched) air/o2 karpen to fanaticaly convert you into a karpen believer.