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Author Topic: KARPEN PILE  (Read 230966 times)

profitis

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Re: KARPEN PILE
« Reply #345 on: July 31, 2014, 03:54:18 PM »
Use 925 jewellry silver for the longrun tests pomodoro.it will not fail us.

profitis

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Re: KARPEN PILE
« Reply #346 on: July 31, 2014, 04:58:01 PM »
Mystery pecipitate couldve been unreduced Ag2CO3(yellowish-white) still embedded in the black layer that spread over entire solution.that has happened to me before.what happens is the Ag2CO3 dislodges from silver during prep then withstands electroreduction.that's why you have to cathodize it shitless to get back to Ag if twas thick coat.An black Ag layer that is too thick and fine will also naturaly trap too much H2 buildup in its pores and insulate from the gadget electrolyte and hamper gaseous diffusion away from the cathode

profitis

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Re: KARPEN PILE
« Reply #347 on: July 31, 2014, 05:28:26 PM »
To test for purity of silver,simply throw into HNO3,it must give clear solution and brisk evolution of NO2.jewellry silver will give a blue tint due to trace copper.AgNO3 solution will evaporate and decompose direct to silver-color silver when heated on burner in a testube(300celcius)

pomodoro

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Re: KARPEN PILE
« Reply #348 on: July 31, 2014, 05:59:12 PM »
Cheers for all the advice. I will test purity soon.  I can dissolve in nitric and test ppm of silver with icp. Time is my enemy at the moment. There are a few more metals of like to try as cathodes and I will then run it for a week.   When I anodized the larger silver electrode, some light blue carbonate formed. You are spot on about the reduction being difficult.  With the copper no conducting oxide formed in koh it kept flaking off as it was being produced. So a simple nitric etch was all I used.

profitis

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Re: KARPEN PILE
« Reply #349 on: July 31, 2014, 06:14:28 PM »
I'm glad we got that problem out the way pomodoro a sigh of relief coming out me now.you might want to try graphite now aswell,fully dewaxed on hotplate,and inside not outside the device.success is imminent.

d3x0r

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Re: KARPEN PILE
« Reply #350 on: August 03, 2014, 09:47:51 PM »

profitis

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Re: KARPEN PILE
« Reply #351 on: August 03, 2014, 10:24:47 PM »
If murray is using paper inbetween electrodes its probably a fuel cell.cellulose undergoes hydrolysis in alkali and breaks down to sugars fuel.murray must repeat with glass fiber inbetween.

pomodoro

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Re: KARPEN PILE
« Reply #352 on: August 04, 2014, 01:58:50 PM »
Quick update. Pd/Pt vs Cu. Worked well after 3 days. Decided to try a cheaper version for building a higher voltage pile. Now trying Palladized Cu vs Cu. Also now using uhp hydrogen. I'd like to be able to power a device constantly, these cells discharge ultra quickly. Any ideas on microamper motors requiring a volt or so, or a pulsed milliamp motor that keeps spinning till the next discharge some 30 seconds later? 

pomodoro

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Re: KARPEN PILE
« Reply #353 on: August 04, 2014, 02:12:32 PM »
carbon-carbon battery
https://www.youtube.com/watch?v=D6D0lKPY_as
https://www.youtube.com/watch?v=rMzI9WDaAvU

Awesome, check out how he gets so excited by the discovery! He forgot to shout eureka out loud.

profitis

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Re: KARPEN PILE
« Reply #354 on: August 04, 2014, 06:29:32 PM »
A galvanometer with an on-off alarm switch circuit is one way to display power continuously pomodoro.your going to have to play around with the device to figure how many seconds inbetween pulses is sufficient rest-time for stability.the electronics geniuses on this website should be also able to give ideas if we ask them about pulse motors.the diagram below is one way to make a sealed device with a oneway gas valve attatched.aluminum foil is tossed in before screwing valve onto the device and enough gas generated to purge all air and fill with slight pressure.it must be put underwater briefly when gas exits to make sure that gas escapes only through valve and not leaks.you have to play around with Al foil and caustic soda beforehand to get an idea of what volumes H2 is generated per unit foil.

profitis

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Re: KARPEN PILE
« Reply #355 on: August 04, 2014, 06:48:24 PM »
A pendulum swinging an iron ball on a long thread near a switch-electromagnet just came to mind for demo.easy to adjust for timing.

profitis

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Re: KARPEN PILE
« Reply #356 on: August 04, 2014, 08:19:29 PM »
Coat that palladium onto nickel foil for best results pomodoro.you may lose quite some power if you coat on copper family.

profitis

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Re: KARPEN PILE
« Reply #357 on: August 05, 2014, 11:43:00 AM »
Coat Pd onto stainless steel shaving blades,another cheap option.make sure plating solution is acidified with ammonium chloride or dilute acids(acetic)

pomodoro

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Re: KARPEN PILE
« Reply #358 on: August 06, 2014, 02:44:31 PM »
Tried the Pd/pt vs Ag with tetrasodium EDTA instead, to prevent the gradual loss of power, but deterioration of Ag surface Is visible - a gray film where immersed in electrolyte.. Same deal with conc. Ammonia.  I'm surprised as I thought these would keep surface clean but leave elemental silver alone.

profitis

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Re: KARPEN PILE
« Reply #359 on: August 06, 2014, 03:04:12 PM »
Nooo pomodoro.NH3 and most amine compounds viscously attack silver and take it into solution.this is why they are used to clean silver,they strip the surface clean.forms complex silver-amines which then probably reacted with cathode H2 and partially reduced to grey Ag.use only KOH or NaOH or Na2CO3 in the silver cells.use etched silver not anodized-cathodized like we was doing before.youl get silver plating direct onto your palladium anode eventualy within the gadget if you use ammonia as electrolyte