How to make an aluminium air battery selfmade homemade DIY batteries

Copy of a video from youtube user:
http://www.youtube.com/user/yellowmetalcyborg

He gave me permission to post it on my channel.
Please go to his channel
for more on this video.
Many thanks.

P.S: With a electrolyte made from K2CO3 and water you can get almost double
the voltage, so you will get around 1.3 to 1.5 Volts per cell and also
more current !

Category:

Science & Technology

Tags:

• Aluminium
• air
• battery
• homemade
• selfmade
• DIY
• batteries

[overunitydotcom]

The best electrolyte is K2CO3 in water,

but also very diluted solutions of NaOH or KOH in water will work,

but are much more corrosive

and will decompose the alufoil very fast, so use only very diluted,

but best is K2CO3 in water, as it does not decompose the alufoil.

Per cell you can get around 1.3 to 1.5 Volts this way, so a few in series

should be able to drive your Joule Ringer circuit.

[overunitydotcom]

You can also use a bigger graphite sticks from an old zinc-graphite batteries

or use graphite sticks from painters supply.

But not the charcoal sticks, but only the real graphite sticks !

Charcoal does not conduct the current, only graphite does it.

Also you could use carbon copy paper, but this is very fragile,

but has a nice surface area.

Just try it, or use graphite spray and spray a paper towel.

Kontakt Chemie in Germany is producing a graphite spray

with a acrylic binder glue in it.

[pkrska]

Which part is the positive? Is it the carbon rod?

And the negative is the aluminum?

[overunitydotcom]

@pkrska

Yes, graphite is positive and the aluminium is negative.

[overunitydotcom]

otherwise the alufoil will smoke away and it

will generate Hydrogen, which can explode when it all heats

up. So only use very low concentration NaOH...but

K2CO3 is much better, as it does not consume the Alufoil

and does not generate Hydrogen, but makes the alufoil

more reactive and this generates more voltage also.

You can also try graphite spray which is produced by a german company

called contact chemie.

I still have to try this myself, if this will work when sprayed onto

towel paper.

[overunitydotcom]

Well, really try to get K2CO3 mixed into water for the electrolyte if you can get it...

It really makes a difference !

The voltage is almost double from one cell !

Also the current is then much better.

If you can´t get K2CO3 you can try it with NaOH which is in Drano pipe cleaner,

so you can buy any cheap pipe cleaner in your supermarket

and use it, but make the solution only very thin (light), cause NaOH

will already eat the alufoil away very fast itsself, so use only very

few NaOH in water.

[ferrouscromagnon]

Very informative video. The music is catchy as well. I would like to get more information on this music.

[Begbucks]

What the largest you built?

[TheCerberusInferno]

I like the music ..

[DexterEvilGenius]

mmmmm pencil bbq delicious :D

[tweety30number11]

how many volts is the output?????? i need 12 volt thank you great vid.

[ruskie20]

What is the song name? Good video too.

[MucusFelidae]

That's how a post nuclear World War 3 society will start again from scrap, literally.

[yellowmetalcyborg]

@DrDontDoDis Thanks! I'm sorry I didn't put better music for this video, I didn't want to buy music specifically for this video because I didn't put any ads on it. I adress the energy input vs output issue in the video description of the original video.

[yellowmetalcyborg]

@naturecollision Lots of energy, I adress this issue in the video description of the original version of this video.

[DrDontDoDis]

The music aside, this is a VERY good video on making Al-air cells. Like all batteries, it's only an energy storage device and Al-air is very difficult to recharge. Its power comes from the oxidation of the aluminum, the reverse process of aluminm smelting, which is VERY energy intensive. An Al-air cell releases that energy. Because half of the fuel is present in air, metal-air batteries are the most energy dense known.

BTW Na2CO3 (roasted baking soda) should also be a good electrolyte.