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GreenD
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[*] posted on 19-3-2012 at 08:27
platinum electrodes


Hey guys, is anyone familiar with a place that will sell platinum electrodes at an affordable price?

I looked at anomet but their contact is down for the day, so I can't inquiry them.

Tips?




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GreenD
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[*] posted on 26-3-2012 at 05:52


Nothing?



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[*] posted on 26-3-2012 at 05:56


I have heard of platinum wire being used as an electrode, and its relatively affordable.



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[*] posted on 26-3-2012 at 06:08


American Pyro Supply (Rolling Thunder) has some really nice ones, but the term affordable is relative to your budget. If you pay for a good one it will pay for its self in no time at all, trust me.



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barley81
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[*] posted on 26-3-2012 at 07:35


Elemental scientific sells platinum wire for 7 bucks an inch. I would seal the end of it into some glass tubing for ease of use.

[Edited on 26-3-2012 by barley81]
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[*] posted on 26-3-2012 at 08:29


I used 0.5 mm Pt/Ir wire.
Its conductivity was disappointingly below expectations!




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GreenD
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[*] posted on 26-3-2012 at 08:42


Ok -I'll look into all of these. Has anyone ever bought an entire electrochemistry kit? electron source / chamber / electrodes?

Or is there a place that easily explains electrolysis. I understand electrolysis chemically speaking, as redox, but the choices of anodes is beyond me. I don't know much transition metal chemistry and don't know why, for example, rolling thunder would sell a set of platinum + titanium electrodes, why wouldn't they sell a set of plat + plat? or tit+ tit?

[Edited on 26-3-2012 by GreenD]




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[*] posted on 26-3-2012 at 09:06


Quote:
Or is there a place that easily explains electrolysis.

Yes, here and here!




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GreenD
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[*] posted on 26-3-2012 at 09:58


Great first site - I'm not interested in chlorates specifically, but makes sense.

My pdf is on the fritz for #2. But thanks!




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[*] posted on 12-4-2012 at 06:56


http://www.ebay.com/itm/120724679996?ssPageName=STRK:MEWNX:I...

These seem to be popular and I've used one to create about 1.5lbs. of perchlorate in a 2 liter cell.
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[*] posted on 12-4-2012 at 10:26


My mother is an audiologist so i got some Platinum wire for free. Unfortunately it is about the size of two hairs.
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[*] posted on 12-4-2012 at 10:31


Nice Berrilium!

Apparentley fine platinum gauze it comparatively inexpensive . . .is this a possibility for electrodes? You could even roll a short section into a cylinder if needed.




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[*] posted on 12-4-2012 at 10:49


Quote: Originally posted by hyfalcon  
http://www.ebay.com/itm/120724679996?ssPageName=STRK:MEWNX:I...

These seem to be popular and I've used one to create about 1.5lbs. of perchlorate in a 2 liter cell.


awesome didn't see this!

This begs the question, what type of power sources do people use?




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[*] posted on 12-4-2012 at 12:11


I was considering using a computer power supply for small-scale electrolysis (though voltage is set at +3.3, +5, and +12V), and maybe a power supply from a MOT + rectifier + voltage-smoothing capacitor, but I haven't actually built the supply, nor have I done any electrolysis (school is busy).
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[*] posted on 12-4-2012 at 14:58


There is an example of a great Pt Anode made from an old crucible at this link;
http://www.sciencemadness.org/talk/viewthread.php?tid=5050&a...
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[*] posted on 25-4-2012 at 14:16


have you looked at other electrodes? PbO2 & MnO2, apparently MnO2 makes a good anode during chlorate production (nurdrage youtube, he also has vids on making them)
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[*] posted on 25-4-2012 at 15:53


He said he wasent intersted in chlorates



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[*] posted on 25-4-2012 at 23:28


Quote: Originally posted by Geko127  
He said he wasent intersted in chlorates


i know, i just thought they could consider whether the electrochemistry of the electrode might work with their specific reaction
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[*] posted on 28-4-2012 at 03:56


If Perchlorates is your interest and you don't want to eat your expensive platinum anode up, you need to start with chlorate production. If you start with pure chlorate in your cell, you won't have the erosion problems associated with chloride contamination. You also need to run DiChromates to protect that costly anode.
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