Food Batteries are Rubbish

Sometimes things just don't work out... To answer the question proposed at the end of the previous video: No, in-fact, I am not able to game on potatoes...
Making food batteries... highly not recommended; The Food will say "Your puny tests mean nothing to me! I will give out exactly as much power as I please!"
Chapters:
0:00 Why?
0:16 Potatos
1:31 Phosphates in general
2:02 Onions
2:34 Salt and Lemons
3:58 The Plan of Action
4:49 The Try
5:29 The End
6:13 End Screen
I stand in solidarity with Ukraine!
Music used: TH-cam Sound Library

[@W0Ifer]

Nice video and I was like lol when you said the battery self discharged

[@herzogsbuick]

I lost it when you stuck your fingers down your throat, that was fantastic

[@m.luthfi.alhadi]

this is actually good video, keep up bro 👍

[@PixlRainbow]

This is probably like, really late, but have you seen the open source all-iron battery 2.0? The instructions are in a research paper, but I've looked at it and it's one of the most easy-to-read research papers out there.

[@BirdbrainEngineer]

I have not seen it, no. If I am going to be making DIY batteries in the future then I am sometimes wondering about making a sodium-ion battery... Just the problem is that the chemicals needed are kind of nasty to be honest.

[@PixlRainbow]

@@BirdbrainEngineer from what I can tell, the "safest" sodium ion technology uses prussian blue (Sodium Hexacyanoferrate; despite the cyanide group, it's not super toxic because it is strongly bound to the ferric ion) cathodes and hard carbon (activated charcoal) anodes. Electrolytes may be either liquid propylene carbonate (non-toxic, weakly flammable), or a supersaturated aqueous solution of sodium perchlorate (mildly toxic, only about as much as bleach, but as a strong oxidant it can accelerate flames).
They still aren't the easiest or the safest to construct however. Iron, Zinc or Aluminium ion batteries would be safer (in order of descending safety). With zinc and aluminium you have the option of using non-toxic deep eutectic solvents as electrolytes (propylene glycol and choline chloride) and solid metal cathodes.

[@BirdbrainEngineer]

Well, I'd want to make batteries that would actually have some good energy density. Iron, Zinc and Aluminium batteries are all pretty bad in terms of that when comparing against even sodium-ion.

[@PixlRainbow]

@@BirdbrainEngineer unless you can get your hands on sodium metal (and seal the cell sufficiently well to prevent corrosion of sodium metal), the energy density of sodium ion batteries will actually be behind that of aluminum ion. You can't pack as many ions into an intercalation host as you can into solid metal.
Also note that so far you have been using galvanic cells, whereas when we use the "ion" suffix in the name of a battery we usually refer to rocking-chair batteries.

[@BirdbrainEngineer]

@@PixlRainbow Oh I know the type of batteries I made in these videos are not "ion" batteries. But just saying that's probably where I'd try to go next if I ever tackle batteries again.

[@swecreations]

Very good video, deserves more views

[@professorfukyu744]

Have you seen robert murray-smith's work? Id suggest at least some experiments with activated carbon which is everywhere from hot hands to fish filters.

[@BirdbrainEngineer]

I did stumble upon their work while working on this project, yes... it's great stuff. I may come back to batteries some day, to try and diy build some actually half decent battery haha... but that's going to require more research and understanding of the field than I did get while researching this and the previous video. For now I am going to move on to some other projects that I have always wanted to make.

[@Halina20011]

Nice video.

[@Khiladi_99]

Now make an aluminium foil battery.

[@BirdbrainEngineer]

Problem with aluminium is that any conventional electrolyte (acids or alkali) would react all of the aluminium quite quickly. When I was making my diy battery video, I did also try out aluminium foil at basically every step of the way but as was expected, using aluminium as an electrode produces less power than using zinc and/or copper, and it reacts away within hours. It'd be a lot cheaper using aluminium though :P

[@Khiladi_99]

@@BirdbrainEngineer thanks for the info.

[@tanyamorales8593]

𝐩𝐫𝐨𝐦𝐨𝐬𝐦 😎