I dont think your image loaded meanwhile enjoy some modified MMO with PbO2.
Ankit1612 - 1-1-2023 at 23:59
I need some help:
I have Graphite electrode dia. 16mm, length 3 inch and 220W CPU SMPS power supply.
And I prepared a 400ml sodium chlorate cell.
I made a saturated solution of 450 ml of distilled water and 150 g of sodium chloride (edible salt) and added 6 ml of conc. HCl to make the solution
acidic. Then I took a 500 ml beaker and put 400 ml saturated salt solution in it. CPU SMPS have 3.3v, 5v and 12v. I have connected 5V supply to the
cell.
Now I am confused that, at how many volts this CPU SMPS will gives how much current.
I also want to know for how many days I have to run the cell in order to get enough amount of sodium chlorate?
[Edited on 2-1-2023 by Ankit1612]mysteriusbhoice - 3-1-2023 at 04:05
you need to make a shunt or buy a shunted meter https://www.youtube.com/watch?v=oWT8gfQLn24
runtime calculators can be found online
just run either 3.3V or 5V pref 3.3 for graphite since it runs at low current density.woelen - 3-1-2023 at 04:18
Adding 6 ml of conc. HCl seems too much to me. Formation of chlorate does not occur at too low pH. Chlorate is formed from Cl2 and OH(-) ions and
these will hardly be present with so much HCl in the mix.
What you can do is add a power diode in series with the 5V supply if the 3.3V is too low and the 5V supply is too high. Such a power diode will take
away 0.7 to 0.8 volts at a current of several amperes. Be sure to cool the diode, at e.g. 6A it consumes 4 to 5 Watts of power and it will become VERY
hot without proper cooling.Ankit1612 - 3-1-2023 at 08:08
so far its been 24 hours since the cell started at 5v. Now, should I power it to 3.3 volt. I checked the temperature, it was 28°C, at the bottom and
39°C near the electrode.
Now what should I do?Ankit1612 - 3-1-2023 at 09:46
can anyone tell me about that;
it was on my CPU SMPS.
[Edited on 3-1-2023 by Ankit1612]
mysteriusbhoice - 3-1-2023 at 10:49
this PSU looks like the 400 or 300 watt variant and anyways you have a lot of amps to use. Highly doubt you will even get close to running it more
than 8 amps with your electrodeAnkit1612 - 4-1-2023 at 01:37
It means I will get 40A at 5V..! mysteriusbhoice - 5-1-2023 at 01:35
That is the maximum you will get before it shuts down or shits itself. This likely wont reach values anywhere near 40 amps unless you have large
enough electrodes with low enough resistance which dinky graphite rods simply wont make that possible unless you dead short them.Rainwater - 5-1-2023 at 01:39
