Colloidal Silver and Gold Forum

Production Techniques and Chemistry => Colloidal Silver Production => Topic started by: axkman on August 01, 2020, 11:53:15 PM

Title: Lot of dark stuff on my kathode?
Post by: axkman on August 01, 2020, 11:53:15 PM
Hi there!

I have a question. I made a new batch of 500ml nano silver water which looks beautifull!
I just wonder. I made the cathode electrode 50% shorter than the anode. But.. there is a thick cloud of black stuff (silver oxide?) on it after 2 hours of production on 2ma current.

My glass is on a magnetic stirrer. But I wondered, do you guys know a way to prevent this silver oxide build-up on the kathode?
Title: Re: Lot of dark stuff on my kathode?
Post by: cfnisbet on August 02, 2020, 08:59:11 AM
There isn't a way to prevent it, really. Just making the Colloidal Silver correctly will minimise it.
Title: Re: Lot of dark stuff on my kathode?
Post by: axkman on August 02, 2020, 12:10:56 PM
Okay, thank you for your reply.

Is there maybe some advices on how to reduce it? Like should i retract the kathode a bit more? Or should i get my magnetic stirrer a bit more RPM?
Or maybe less current (my current was max 2ma with a current source that prevents more than 6ma current).
Title: Re: Lot of dark stuff on my kathode?
Post by: cfnisbet on August 03, 2020, 01:21:13 PM
Okay, thank you for your reply.

Is there maybe some advices on how to reduce it? Like should i retract the kathode a bit more? Or should i get my magnetic stirrer a bit more RPM?
Or maybe less current (my current was max 2ma with a current source that prevents more than 6ma current).
The electrolyte is the main key to plateout reduction, followed by making the Colloidal Silver slowly at low amperage.
Title: Re: Lot of dark stuff on my kathode?
Post by: Bobby on August 04, 2020, 06:09:40 AM
axkman,

  What ppm are you going for?

  cfnisbet is completely right. The electrolyte has to be made and measured just right.

   What was your voltage?

Bobby