How to make Copper II Oxide Cu2O Mineral Crystal Particles with Carbon Rod in Electrolysis Cell

How to make Copper II Oxide Cu2O Mineral Crystal Particles with Carbon Rod in Electrolysis Cell

 Copper has very long trails of use in human history and it is probably first non-precious metal employed by the Sumerians and Chaldeans somewhere between 5,000 and 6,000 years ago. These peoples developed considerable skills in fabricating copper and the rudiments of craftsmanship spread to people of Egypt. First three thousand years, copper was the basic material and occupied a position similar to that of iron in modern technology. Copper has been used for medicinal purposes as far back as ancient Egypt, Greece, and Rome as well as in the ancient Aztec civilization. Well known, copper in form of bracelets and ointments have been part of folk medicine to deal with painful joints and muscles. Read more about copper here.


LEVEL: Basic, easy

PREPARATION TIME: 30 - 90 minutes

MATERIAL PRODUCED: Copper II Oxide in water solution



  1. Carbon stick (graphite rod 99%)
  2. Pure metal Cu
  3. pH Meter
  4. Alligator clips
  5. Baking soda and white vinegar or HCl  for cleaning
  6. Kitchen pad (green scrub)
  7. Couple of Pegs
  8. Distilled water 5l with pH 7-8
  9. Pure Salt NaCl ( if you use other salts, it also change your result, because contain other minerals)
  10. Polypropylene glycol (PG)or cane sugar syrup
  11. Glass jars (Borosilicate jars are heat resistance glass recommended), household jars also could be used if it is the only option. I do not recommend to use any plastic as it could release some extra ions in solution. You can notice difference of water kept in plastic and glass bottle, glass is standard choice in any scientific lab)
  12. Stirrer (optional, for best results recommended) 
  13. Glass rod for stirring (recommended)m but also bamboo stick could be used
  14. Magnetic Stirrer (optional, but for best results is recommended)
  15. DC power supply 30V (highly recommended), can use solar cells batteries etc. 
  16. Funnels
  17. Stainless steel tea strainer
  18. Filter papers (brown coffee filter Melitta size 4 (20 μm) and slow filter paper 2,5 μm)
  19. Ceramic mortar with pestle (optional) use for powder preparation
  20. Protection gloves
  21. Respiration mask (3M, optional, but very recommended for personal safety)
  22. Strong alcohol (70-95%) for cleaning and disinfection of tools.

Please make sure you use cleaned tools whatever comes in touch with a prepared solution. Including air in a room!

Use strong alcohol as a cleaning agent!

Step One

Prepare your glass jar with the fresh boiling distilled water. I use 800ml borosilicate jar.
You can use what fits into your options.

Step Two

I pour ~3ml of glycol (PG) or around ~5ml of cane sugar syrup as an alternative in case if you have no access to glycol (PG). 

Use ~4 ml of PG on one liter of water.

The sugar molecules will surround each particles and keep separated from strong bond clustering.

Step Three

Add a pure salt (NaCl) of 10 gr to 1L of water and stir it very well till all salt is diluted.

Salt will function as an electrolyte in a solution.

Step Four

Start the electrolysis with carbon rod on one side as negative and on second side magnesium rod as a positive electrode by attaching with pegs on glass jar edges.

Use your power supply in the range of 6 to 12V around 0.50A. Keep water hot, around 60°C
I use this for my calculation and time to get my best results. Other settings and variations can be viable. So don't stick to a single method but rather be an observer and be in control of your electrolysis cell.

Step Five

Keep stirring time to time to avoid heavy cluster formation. If you use a magnetic stirrer then use it with full speed.
Insure the electrodes are far enough from each other at least few centimeters to avoid water heating in between electrodes it will create other unexpected results.

Please read about the water here.

Run the cell up to 90 minutes. Hot boiling water will avoid creation OH bonds as it will releases in air.

Keep boiling the water after electrolysis is ended for few minutes.


Copper oxide is slightly water soluble it depends on different conditions and will form a colloidal plasma water by structuring it.


Step Six

Stop the power supply and let settle for some few minutes. Electrodes are still energized and will still keep running until the energetic balance will take place in your cell.

Video how to make Copper II Oxide Cu2O Mineral Crystal Particles with Carbon Rod in Electrolysis Cell


Note: Mineral crystal particles will continue to be in spin and movement. Aggregation, clustering and different chemical bonds can have with the time. Think about a good preservation of your prepared materials in long term.


Step Seven

Once most particles settle on the button of the jar you can start washing off salinity.
Repeat multiple time at least 4 to 6 times. Be patient between each washing. Let particles sit down as possible you can. The tiniest particles will float much longer the bigger.


Very reach particles Copper Oxide after 2.5 microns filter  filtration and centrifuge 4000RPM for one hour. Test with the strong red laser beam.

Only bigger particles can be seen with visible light!

Step Eight

After rinsing is done, filtration is needed to to separate different grades (sizes) of particles.

First filtration with a metal filter to separate biggest cluster part after crystallization .
Second filtration should be done with a coffee filter in the range of 10 to 20 microns to separate larger particles from smaller particles.
Third filtration with lab paper filter of 2,5 microns.

You can further separate them by a centrifuge to get only nano scale particles of your plasma water.

Which chemical grade and sizes need to be determined as most appropriate for your project before you start this experiment all these steps. There is no magic wand that one grade can be applied to everything. High precision and awareness of what you are doing are your next steps to oneness and unity!

In conclusion, I prefer to use Copper II Oxide, it fits more for oxygen absorbing species and copper carbonate for dioxide absorption species.

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