Comments on: Calculate the current density.

By: admin

admin — Wed, 28 Jul 2010 05:37:31 +0000

> Total surface at which the deposition is going on. This means sum of
> surfaces of all cathodes present.

Thanks. This is what i want to know.

By: admin

admin — Wed, 28 Jul 2010 05:37:30 +0000

On Wed, 14 Mar 2007 10:10:00 +0100, Hafel wrote:
> Hi, i met a problem to calculate the current density in the
> electroplating. As i know , to calculate the current density, we muz
> know what is the current and the electrode surface area that immersed
> in the electrolyte. My question is that the electrode used to
> calculate the surface area is cathode or anode, or the average of
> both? and lets say the surface area of cathode to be plated is used to
> calculate, then what if the cathode is more than one. What i mean is i
> have to use the average of the srface area of the cathodes or the
> total of all cathode surface area??

Total surface at which the deposition is going on. This means sum of
surfaces of all cathodes present.

Borek
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By: admin

admin — Wed, 28 Jul 2010 05:37:29 +0000

On Mar 14, 2:10 am, "Hafel" wrote:

> Hi, i met a problem to calculate the current density in the
> electroplating. As i know , to calculate the current density, we muz
> know what is the current and the electrode surface area that immersed
> in the electrolyte.

Current density refers to the electrode, not to the whole system. For
electroplating, it would refer to the object being plated (working
electrode).

The counterelectrode, as a rule, should be larger in any case, the
better to know or control the plating potential at the working
electrode.

Dangerous Bill