KARPEN PILE

[profitis]

The above Pt(b)/Pt/O2  cell setup shoulve been done ages ago,my bad (-:

[profitis]

Don't you have any platinized platinum lying around pomodoro.this is THE most important experiment for O2 cells by far and it is one that I KNOW works everytime with labgrade foils.

[profitis]

Which electrode was the cathode in your Pd/glassy C/air test result above pomodoro

[pomodoro]

Which electrode was the cathode in your Pd/glassy C/air test result above pomodoro

Cathode was the Pd/Pt,  slightly more +ve than the C.

No platinized Pt, it dissapeared when I heated the Pt in a bunsen!  Been using Pd  black in all my experiments.

I guess I should be stopping the stirring in these experiments when I take voltage readings, otherwise the different gas concs are getting averaged out?

[profitis]

Good.now we will see if that potential switches polarity under H2..(!)