KARPEN PILE

[profitis]

And another spontaneously reversed potential against the standard table in alkaline solution.Pt + 2OH- >< Pt(OH)2 + 2e-..-0.15v(standard)/MnO2 + 2H2O + 2e- >< Mn(OH)2 + 2OH-..+0.05v(standard).this is again because of faster O2 forward kinetics on MnO2 catalyst than on smooth Pt catalyst.this will not work under argon.please note,for convention I ascribe a minus (-) sign to standard potentials below  hydrogen and (+) to above hydrogen(0.0v)

[pomodoro]

Ever tried iron as a cathode in the hydrogen cells?

[profitis]

I've measured it as anode,results inconclusive,seemed weak.

[pomodoro]

Steel wool, large surface area.

[profitis]

Platinized platinum has higher work function than platinum smooth.although it concentrates o2 better than the smooth it releases o2 to electrolyte easier than the smooth,less tightly bonded to the o2 gas.quite perverse.