How to make a 2.4Volt Zinc Battery (zinc hexacyanoferrate) 

Hi Kev. Have uploaded this video yet?

@@kazeem-mustapha not yet mate 😎

Sorry no,... you will not find any usfull separator in common household

@@cayrex will Nafion work too?

@@cayrex Well Osmosis filter foil will work..Any idea where to get this cheaply ?

overunitydotcom I‘d use nafion or nascion membranes for this, filter paper won‘t work, but indeed you could make a membrane from materials you find in your household, for example glue and sodium silicate...or peg and glue... I will explain how it works with sodium silicate, first on you will need clear, solvent free polyvinyl alcohol based glue, take 60ml of the glue and 20ml of a 36% sodium silicate solution, when mixed you will get a semi-crosslinked organic-silicon polymer composite, squeeze it a bit in your hands and redissolve in fresh water to get a final volume of 80ml, heat the solution for this. Dry the solution in a petri dish at 60-70C (not below and not above, very important, else it either won‘t crosslink or you won‘t be able to remove the film). After the film has dried carefully remove it from the petri dish and soak it in a 1-2M sodium hydroxide solution for a few hours, this will make it insoluble in any solvent and fully crosslinked, if it has to be transparent treat it with a multivalent salt. Soak the membrane in a 10% NaCl solution for a couple hours ans voila! There are several other ways to crosslink pva though, for example citric acid, PEG, polycondensation etc

Andre Leonhardt wow dude, thanks! Do you know some papers to read on these and other ways to crosslink pva?

William Hada In your case I‘d try to wet it with ethanol and wash it with water, this way the membrane gets hydrophilic

As an engineered product maybe the pores are specifically sized for lithium ion. And they very small.

Hey! I really dont know

Hydroxide electrolyte promotes dendrites on the zinc electrode. This shortens the lifetime considerably

Hmm, I dont know,.... yet

But what I found is greater is the difference of the ph more voltage you get. But in this battery I was focused into materials that are not so dangerous and not hard to find.

cayrex2 yes . Maybe citric acid !

@@Buzzhumma yes. But then this battery will not be rechargeable

The problem is that not each electrolyte will not work reverse. And you will end up with a primarily battery

Hehehe ok

Hi! I made the material by my self. Potassium hexacyanoferrate + zinc sulfate

@@cayrex Thsnk you for the quick reply. I will like you to repeat this very experiment but using a Redox Flow system. Build the 2 ion exchange cells and use Zinc Hexacyanoferrate + Graphite mixtures as the active materials for Cathode and KOH + ZnO as the active materials for the Anode. I will donate some money towards this experiment.

I do not understand what you mean. You want a cell in flow system? That you have two tanks of electrolyte, some pumps and that the electrolyte is circling?

Yes. Redox Flow Battery system using the materials used in the in the video.

@@kazeem-mustapha ok! But sorry, I can not make it right now, because I dont have potassium hexacyanoferrate and separator anymore