Video — "Cold Fusion Reactions by Renzo Mondaini"

This video was brought to my attention via the Journal of Nuclear Physicis. It is produced by Renzo Mondaini, an electronics technician from Ravenna, Italy, who has been carrying out experiments in cold fusion at his home.

The video is a series of demonstrations of various electolytic cold fusion experiments using anodes and cathodes of various materials in different solutions, and with different input voltages. There are claims of different mineral deposits and of ‘cold fusion reactions’ being created. I am not sure of the significance of his demonstrations, so I thought I would post it here for comment. The video is about half an hour in length.

  • Hampus

    Renzo! Our friendly cold fusion scientist. Stop working for the telecom industri and start creating cold fusion devices! Thank you so much for this very pedagogic showing of how cold fusion works.

  • MK

    Some thoughts (to stir the discussion 😉
    i´m not sure if we realy see reactions that include “cold fusion”.
    Plasma coating is known ->
    This is used on the Anode (+) with aluminim.

    The argument that Deuterium is formed might be valid, due to the radio emmissions, but this needs confirmation.
    The argument, that the formation of Deuterim is confirmed by the soapy (pH>7) appearenace of the solution, might be not valid. Reason: The metal ion of the electolyte is discharged at the cathode. If this is for example a Sodium ion(Na+), then elementary Na is formed, which immediately reacts with water to NaOH (sodium hydroxide) and 1/2 H2. This would explain the high pH of the solution on an conventional way.
    Anyway, interesting experiments (“slightly” dangerous if you do not know exactly what and how you are doing it…)
    Some similarities in the visual appearance of the reaction with Athanor/ Hydrobetatron.

  • Erik

    Isnt it just H reacting with the oxygen and ignited by the heat?

    • Erik

      Never mind :p does anyone know where to get a 350V dc supply?

      • Rob

        Just rectify 220v AC

  • Giuliano Bettini

    Renzo, you must (“at least”) find a large hole into the floor. 🙂

  • RenzoB

    I think from now on I’ll sign as RenzoB to prevent misunderstandings…

  • Jonas

    Ok, so, what do you guys think of tungsten carbide (I think would be the English word)..? A Swedish company sells a tile saw (for bathroom tiles for instance) with a blade, which really is a rod with a very rugged surface..? As an amateur… well everything… I’m very tempted to buy two of these, stick them in a jar of salt water and apply current, but as an amateur, thus, I’m afraid I might blow a fuse, or what’s worse, blow up the house… What additional equipment would be needed, you think? And would I be safer using e.g. a car battery or such? I think said company (Biltema – originally selling car parts) have all such equipment, e.g. measuring devises. How should I measure the output? =)

    The product with the tungsten carbide rods can be seen on

    • Jonas

      Goodness – words disappearing, and no way to edit one’s comments anymore..?

      I ment to say (edits in caps) “A Swedish company sells a tile saw (for bathroom tiles for instance) with a blade, which really is a TUNGSTEN rod with a very rugged surface” – and no question mark. And “As an amateur OF… well everything…”. Well, well. I think you get the point still. Perhaps it sounds even more confusing now. =P

    • Gillis T

      Sorry, but this is not entierly made of WC. Its a thin steel rod or wire with WC from Sandvik attached on it. I think its aviable all
      over world

      • Jonas

        Yes, that’s what I was thinking actually. Perhaps the steel inside ruins the experiment, though, but I was kind of hoping the tungsten-carbon combo could give an even better result (as carbon is one of the rumored catalysts of Rossi’s e-cat). That and the rugged surface of it potentially giving it more surface.

  • Go to an electronic supply store and buy one.
    Willard Elliott VE4WJE
    PS: If necessary connect several in series to get 350 volts.

  • Dan Woodward

    I was interested mostly in the silicon deposits that resulted from the Aluminum terminals. It seems to indicate that the aluminum was transmuted to silicon. Is there any way to verify that the silicon did not come from the glass beaker?

    • Erik

      As he said, the aluminium was only 99,5% pure. The rest could have been silicon.

    • Gillis T

      Why not PTFE or some other rather resistant polymer used for instance in biochemistry. To exclude sources of Si can not be a problem

  • Gillis T

    Intresting! Especially with the plasma at the glass surface! But this cannot be new. We have known electrolysis since the days of Volta,and there would be numerous experiments in this voltage range, investigating if there is any exess energy (Wh (or kJ) and more, these experiments seems not to bee in the mWh scale) involved.Furthermore in the case of Al, excluding other sources of Si, it would be easy to konfirm transmutation if the deposits contained Si. This is too good to bee (eventually true).

    So a question a bit out of topic.
    There have been a lot of discussions on this blog regarding the influence of E-cat on society. Can anyone help me with the author and/or the title of a sf short story, where cosmonauts, sorry “astronauts”, returning to earth in the future (relativistic or long time journey) meeting a comletley different society, where someone had discovered a very very cheap and simple energy source, now in every mans hands.

    Please forgive me for my english, I am from that little land near the north pole where professors Essen and Kullander livs. And I trust them very much in this case,

    Regards Gillis T

    • It’s really up to people in which direction they want to develop their society, once it’s freed from energy limitations. One possibility might be that international trade declines because everything can be made locally from the ordinary rock minerals on top of which we are living. For example, we might start to use silicon as a normal building material since it’s abundant in rocks, the only problem up to now has been that it requires a lot of energy to separate it. Vertical farming (closed cycle farming with artificial light) is also a possibility which leads to outphasing of traditional agriculture and its environmental drawbacks.

      On the other hand, since cheap energy also makes transportation cheap, some people think that the opposite happens, that there would be an increase of international trade.

      Phasing out of long distance electric power transmission is a pretty good bet. Some smart form of local low voltage grid might survive in urban areas however. Increase of air traffic is also likely. But not all 8 billion people can use their own airplanes, that would produce too much noise and irritation. My bet for future transportation is vacuum tunnel maglev train network with individually routed small cars. The “problem” with that idea in this context is just that in principle it doesn’t need any energy because it has no frictional losses.

      Almost anything is possible on earth, the only problem is that earth is limited and with lots of inhabitants with diverse minds, so then eyes turn to the solar system. But for your novel that’s yesterday’s news since you already had your relativistic astronauts.

      • GreenWin

        One, hopefully immediate goal will be to vastly increase the Earth’s fresh water supply. This can be done by thermal evaporation or reverse osmosis on a mass basis since energy will be essentially free.

        Building large desal plants on the East coast of Africa and the West coast of Australia can turn both areas far inland into great agricultural breadbaskets. Food enough to feed both continents is plausible. This raises the global standard of living far closer to the galactic standard allowing Earth to finally declare itself a Type 1 planet (Mitchio Kaku.)

        Peka, I will prefer to travel by air or on surface. While frictionless tubes are efficient – observation cars are far more fun. I agree the ancient distance power grid will be disassembled (construction work) replaced by local low power grids supplying UPS and backup services to districts and neighborhoods utilizing light industrial and domestic CF-Combined Heat and Power appliances. (despite the “certification” teeth gnashing – home CF appliances are being actively developed – it’s a huge market!)

        Great video BTW, thanks Frank and Peter.

  • Linda

    What am I missing? I don’t see how this is in any way connected to LENR. Where is the excess energy?

    Maybe I’m wrong, but this looks a demonstration of the power of electrolysis… and the power of credulity.

    • Kim G. Patterson

      You are right.
      I feel the same


      • freethinker

        Well, then to the both of you,

        if there is infact deuterium formed in abundance, were did the funky neutrons come from, merging with the proton? Ring a bell?

        I would love to lay my hands on the emission spectra of that plasma.

        • guga

          It is highly unlikely that large ammounts of deuterium are created in such a standard experiment and nobody has ever seen that. I guess it would help if somebody who nows what he is doing had a look a the emission spectra.
          And deducting the creation of deuterium from a soapy feeling? Also, I don´t get why the creation of deuterium should lead to hydroxide excess. And if transmutations with such a gigantic rate are happening that the pH of the water changes significantly (if this should happen at all) or aluminium is visibly transmutated to silicone, I think his house should have exploded.

      • daniel maris

        Yes, this has been around a long time…I don’t see it as anything to do with cold fusion/LENR. If it was that easy well we’d know about it by now…

        • Jonas

          You do know about it by know. 😉 But yes, it seems almost ridiculous. How should one go about measuring in- and output, and hopefully excess power?

  • daniel maris

    I think this post is probably just discrediting what is otherwise an interesting and informative site. I’d move on to something else if I were you Frank!

  • Allen Gage

    Interesting video. A DC electrical arc is what is routinely employed to concentrate electrical current in a small cross section of metallic material to affect localized melting and welding. Certainly the high current produces “plasma” with characteristic emission spectra that matches the species of ionized atoms present in the plasma. But the presence of plasma, routinely produced in commercial TIG welding, in no way suggests transmutation of one species of atom into another. The depicted process is a method of transforming electrical energy into heat and light, just like ordinary arc welding, not a method of generating excess energy. It’s not “fusion” either hot or cold.

    • Anthony

      Allen, you might want to finish the video: he records spectral spike at deuterium. No welder’s plasma can produce deuterium by known chemical or physical processes. He never states that /plasma/ is proof – he relies upon spectral analysis which demonstrates deuterium production. Capiche? 🙂

  • This is significant in that there are two observations that suggest new phenonmenon. A new method of deuturium synthesis
    and a elemental transformation/transmution.

    This shows how little we know of the physical properties
    of matter and relatively pure elements and simple chemicals.

    If our knowledge of properties were correct and reasonably complete all of the results should have been predicted prior to physical experimentation.

    Some posters suggest no anomalies yet there is no publication of these observed results elsewhere.

    • I myself have had experience around TIG welding
      and as you might know any little disruption in
      the conditions will ruin the weld. The welds are with known metal composites in an argon sheilded plasma.

      What we are seeing here are arcs and plasmas under radically different yet controlled conditions. The
      results are different because the range of voltages are applied to the rod in various aqueous solutions.

      Therefore the results are different and do not relate to TIG except with the tungsten rod and arc.
      (aluminum or copper rods are not used in TIG).

  • On an extra note have had some communication with Russ Gries
    who has conducted simular experiments around the plasma erg
    engine concept.

    Rather than an aqueous solution of compunds the arcs are
    applied to various inert elemental gases in these experiments.

    As far I as I know he has tried pure hydrogen but may not have completely finished with a full series including helium argon and nitrogen with plasma expansions under various

    He has obtained signficant useful force of gas expansion.

    Interestigly there is only one recent privately funded
    experiment in this regard and only peripheral.