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Reaction products are aluminum oxides and hydrates and also aluminates, which are formed on the aluminum electrode and then precipitate to the bottom

Thank you for the clarification

I have to admit that soaking the non-woven fabric directly into the electrolyte is a better solution, in fact in the preparation of another supercapacitor I adopted this technique

@@claudiohomelab8181 I look forward to more of your videos in the future!

@@bearnaff9387 OK

يمكن أن يكون القطب موجبا أو سالبا ، ويتم إنشاء القطبية من الشحنة الأولى ومن ثم ينصح بالحفاظ عليها.

It could be an idea to experiment with

@@claudiohomelab8181 science is testing hypothesis. Many hypothesis don't work, but we always learn something. And work or not, interested people will watch to learn.

Thank you for your appreciation. I know that for a few hours after publication the subtitles were not visible, but now they should be seen

Thanks for sharing news about your trial, it's useful news! I use aluminum foil as a collector which then undergoes corrosion. In my last video I made a supercapacitor with protected aluminum that should solve the corrosion problem. For now, it works, but we will have to wait to see the final results. If it goes wrong I will use other metals, such as nickel foil, an alternative could be stainless steel foil

@@claudiohomelab8181 Yes stainless could also be used. Nickel might be slightly easier to work shape cut or handle. sand or roughen the surface etc. I recommend if your using flat sheets to highly roughen the surfaces thoroughly with sandpaper or similar roughening options before applying the active material coating. Makes it stick a lot better and you get a much better easier wetting of the active material and better bond. more conductivity. Sodium sulfate will give highest performance but too much will cause crystal precipitation to form. At room temperature probably 50% to 75% of the maximum solubility will be a good target. Too close to 100% will form precipitation and reduce performance. Nickel works extremely well much better than aluminum No oxide layer formation and high resistance to corrosion in neutral or strong alkaline electrolytes.

Hello Joseph, I can't print the graphite foil directly on the aluminum foil because the foil shrinks during drying and due to the stiffness of the aluminium would result in a completely cracked foil. Look here: th-cam.com/video/CJnWq3MzMNo/w-d-xo.html at 07:29 As you can see the foil contracted but the thin plastic sheet followed its deformation and the foil is perfectly intact.

Yes, I should have thought6 of that myself. Thanks J@@claudiohomelab8181

Hi Martin, I am aware of this problem, to improve I should be able to lower the resistance by an order of magnitude, which on the one hand would be easier to do using acetylene black, but I would like to solve it using low cost materials. Now I'm using these electrodes in making a Water-in-salt supercapacitor with NaClO4 electrolyte, we'll see what happens Regards Claudio

Bonjour Simonsimon, Merci pour votre appréciation, j’ai également utilisé de vieilles plaques d’impression offset en aluminium pour le collecteur de certaines électrodes, Je trouve très intéressante la nouvelle que vous m’avez donnée sur la façon de trouver du PVP (PVP iodé à usage agricole !!). Pour éliminer définitivement le problème de la corrosion, il suffirait d’utiliser de fines feuilles d’acier inoxydable comme collecteur des électrodes. Bien sûr, ceux-ci sont plus chers que ceux en aluminium, mais ils pourraient être la solution ultime à ce problème. Maintenant, avec ces électrodes, je construis un supercondensateur que je viens de fabriquer, je vais poster la vidéo. Pour le stockage d’énergie off-grid, mon idée est d’utiliser des supercondensateurs, Mais compte tenu de l’énorme capacité que le système nécessiterait et des coûts élevés actuels des supercondensateurs, cela n’est guère réalisable Cependant, s’il pouvait être produit à faible coût, alors ce serait la meilleure solution. Je te salue, Claudio

As for the durability of these graphite electrodes, there are no problems in contact with salt electrolytes, I have some cells with LiClO4 and LiCl electrolyte, and electrodes aluminum - graphite sheet still working after 2 years. They cannot be used with strong acids because they are slowly dissolved, with concentrated NaOH KOH they are slowly consumed, if the solutions are diluted they resist enough.

@@claudiohomelab8181 I thaught that they may react with the glue. Anyway awesome work.

I'm sorry but I didn't use AI to make this video. The content was processed directly by me. I just used a Text To Speech program for English audio My English pronunciation is pretty bad

Acetylene black

@@claudiohomelab8181 It seems you didn't add this additive. Where can I obtain this additive?

Acetylene black is an expensive product, that's why I didn't use it. Now I'm preparing low-resistance carbon electrodes for supercapacitors, without using acetylene black, so far I have managed to have electrodes with R < 1ohm @@kazeem-mustapha

@@claudiohomelab8181 I'm looking forward to this video

@@kazeem-mustapha OK

It is not advisable to do so, because the pH of the electrolyte would become acidic and the consequence would be the production of chlorine

​​@@claudiohomelab8181could you put 3 or 4 different positive electrodes in series with one negative and get more voltage.

can calcium hypochlorite work ?@@claudiohomelab8181

Add carbon too system too store power....I took one piece off charcoal put foil around it soaked in salt it gave off power for weeks...not even charged...the power was low but the principle is there

This is correct, but I'm working on lowering the electrical resistance of these sheets

@@claudiohomelab8181 no, you must learn what flexible graphite foil is, it's have resistance near metal but inert to chemical reaction, it's the true current collector, what you try to make is cathode material not current collector

@@teknosql4740 It's interesting what you say. Can you tell me where to find information about these graphite foils to be used directly as a current collector? The electrodes that I prepare with these foils have a stainless steel mesh manifold, so in effect they are cathode material

@@claudiohomelab8181 just buy what called synthetic graphite foil for smartphone.

@@teknosql4740 Graphirte foils or grafoils are very fragile and only practical for lab experiments. What Claudio is doing is quite practical and he can easily go to 0 Ohm and it can be used as a cathode material and or a current collector!

It's interesting what you say. Can you tell me where to find information about these graphite foils to be used directly as a current collector? The electrodes that I prepare with these foils have a stainless steel mesh manifold, so in effect they are cathode material

There are so many ways of doing anything!!! I think we should learn to appreciate what people offer to us for information. If you know any other ways, then it would be better that you share the information rather than seek for non existing mistakes from people who are taking their time to inform people like us. I am an electrochemist and I deeply appreciate the efforts and work of our dear claudiohomelab!!! Let's encourage him and let's share the little or the much he offers. It's a gift!!!

@@claudiohomelab8181 Sorry for those unscientific words from our friend! Keep your head high and just keep on keeping on with your great work! We need you! There will be distractions all over but the world needs you - remember that! We need people like you ready to share the little precious experiments with the rest of the world. Congratulations!

Thank you very much for what you have said

@@claudiohomelab8181 You're welcome!

Polyvinyl acetate (PVAc). other types of binders can also be used, such as polyvinyl alcohol (PVA) or carboxymethylcellulose (CMC). But PVAc is the easiest to use

Graphite

Thank you for appreciating my work

@@claudiohomelab8181 you are well come

Thank you for your understanding, it is a pleasure for me to share this information, from Claudio Cervellin, Italy