On 06/26/2018 11:16 AM, amdx wrote:
On 6/26/2018 9:37 AM, JBI wrote:
I am getting a platinum coated anode that will have a surface area of
26 cm2 (100 mm long x 8 mm diameter).Â* For my application, the maximum
recommended current density is 200 mA/cm.Â* Based on that, how much
current should be flowing through the anode?Â* I calculate square root
of 26 (5.1) times 0.2 which is 1.02 A, is this correct?Â* Thanks.

Â* I'm probably confused but, if it's 8mm in diameter, isn't it 25mm* in
circumference?Â* And, if it's 25mm, then 25mm x 100mm = 2500mm^2, convert
to cm^2 and get 25cm^2. then multiply 200ma x 25cm = 5 amps.
Â* I'll let an adult correct me. I have never seen a platinum coated
electrode.



* have not included areas on end.

You're at the same place I was originally when I did the calculation,
which made me question whether or not I should take the square root of
the area and then multiply that by current density. When I took the
square, I got the 1.02A above, but much closer to your value when I
didn't.

Platinum coated electrodes have many applications:

https://tinyurl.com/yaufchs3