KARPEN PILE

[profitis]

Please try electrolytic palladium deposition by the book first to be on the safe side pomodoro.I think its done much the same way as platinum deposition.swirl a few drops HCl in with the potassium chloropalladate solution and add a tiny bit lead acetate or chloride and deposit with small current.use graphite as your anode.etch your foil prior to deposition.palladium swells slightly when it takes in H2 so it must be adherent.google deposition methods to find out more.heat for a few mins in dil.HNO3 afterward to clean out any deposited Pb(lead)

[profitis]

If you can smash that conductivity cell and retrieve that platinized foil I would feel less nervous @pomodoro.the first test that we show here must be good.

[profitis]

Use tiktak presstick around H2 pipe entrances into the device instead of silicone pomodoro.if silicone peels from movement there will be problems.use lab clamp-stands to prevent movement of pipe inlets.test the device container for leaks under washbasin water before assembly,syringe in some conc NaOH and aluminum pieces INSIDE the shell through inlet holes to generate gas and press your fingers over the two gas entry/exit-holes..gas must only escape under your fingers NOT at the rims or through the wires.you will spot a leak under water.we want robustness. Syringe out or siphon out the waste and rinse

[pomodoro]

Been busy last few days but managed to prepare the palladium sponge. The photos show the Pt electrode in aqua regia (it was still shiny after the 3 minutes), plating of Pd (followed a method from journal with no lead acetate), and the cathodic electrolysis of 1M NaOH over weekend at 60mA to test adhesion. I've made some AgCN in order to plate the other similar Pt electrode with Ag for the test. I don't have silver wire and it will be easy to check the plate during the oxidizing step.

[pomodoro]

The pics

https://flic.kr/p/ofvygG
https://flic.kr/p/ohfRxi
https://flic.kr/p/o13oyf
https://flic.kr/p/ohfSNV
https://flic.kr/p/ohmDhN