Chemical Forums

Specialty Chemistry Forums => Materials and Nanochemistry forum => Topic started by: amal on September 08, 2011, 11:27:16 AM

Title: electrochemical cell
Post by: amal on September 08, 2011, 11:27:16 AM

I have an electrolyte solution ( kcl) in electrochemical cell the electrodes are made of silver. I want to calculate the minimum potential difference to start the electrolysis reaction.

My purpose is to prevent these reaction form happening, I want to my electrolytes solution to be conductive, so electrolysis is not favorable.

any word on this subject will be helpful

Thanks

Title: Re: electrochemical cell
Post by: Pulverulescent on November 28, 2011, 11:35:17 AM

Quote

I want to my electrolytes solution to be conductive, so electrolysis is not favorable.

An electrolyte is any medium which conducts electricity by ionic means.
Current-transfer by ionic means is electrolysis.

Title: Re: electrochemical cell
Post by: Arkcon on November 28, 2011, 12:06:25 PM

Its a little hard to understand your application, amal:, but it appears you need a conductive solution that won't decompose.  We use such solutions to manufacture electrolytic capacitors.  Maybe the solutions used in them will suit your application?
http://en.wikipedia.org/wiki/Electrolytic_capacitor#Electrolyte

Title: Re: electrochemical cell
Post by: Borek on November 28, 2011, 01:08:21 PM

Quote from: Pulverulescent on November 28, 2011, 11:35:17 AM

Current-transfer by ionic means is electrolysis.

That's a lousy wording.

Current in the bulk of the solution doesn't require electrolysis. However, you need an electrode reaction to move the charge through the phase boundary.