Ben, I can't comment directly on your post as I have just added you as a friend - but Ali forms Aluminium Oxide - this process is corrosion and rusting - they are pretty much the same thing. Actually that is not strictly true - rusting is an oxidative process normally applied to iron. Rusting is a subset of corrosion. Anyway it's all a bit of a hair splitting exercise as I clearly mean it is the reaction of aluminium with oxygen to form the oxide that leads to the electrochemical potential of the cell. Of course this passivates the aluminium surface so a good electrolyte helps this passivation layer NOT to form. Hope this helps

Love, and respect your work and beliefs, attitudes. Thanks for all you do.

This makes sense for super light designs of batteries when weight is important, like camping or space missions. Also, human erm waste waters work well for activating them, so no bulk anywhere. Best wishes for the campaign Robert..it's a winner :)

@ThinkingandTinkering

10 жыл бұрын

cheers mate - this is the design that japanese used for the urine battery that got so much publicity - the urine was just the electrolyte

@ThinkingandTinkering

9 жыл бұрын

***** lol

Thanks mate. Cool short educational video. Will be trying this out in class

Thank you for taking the time to reply I look forward to your videos

Really cool stuff Robert...if you mixed the carbon powder with silicone and put the sponge in it would that work? Or does the silicone create resistance and lower the conductivity?

Fantastic work Mr. Murray-Smith , i've found your channel yesterday and i'm already a fan , a couple of questions here : - Do you think it's possible to reach 2 volts with this battery? on what depends? - Have you been tested it connecting multiple batteries serially? do you have some measurements or data? Thanks and again , you rocks!!

@ThinkingandTinkering

7 жыл бұрын

see later videos mate - this will answer your questions

your lectures are really helpfull, i hope you are fine nowadays.

Bob, I've seen your PVA+KOH solid electrolyte video. That seems very doable & I shall do it one day. Will that work with Al-Airbattery? What I have in mind is to use stainless-steel mesh (Ref-Thoisoi2) bonded with activated carbon for the cathode. This carbon-coated mesh, I plan to place in contact with a sheet of solid gel-electrolyte which in turn will contact the aluminium to make a stack of 10-14 cells in series to make 24v.

super pepere,tout a fait d'accord.Mais y a jamais de gens comme toi qui le parlent en french.bravo congratulations

Spit shine fuckin brilliant mate

One youtuber found that mixing some manganese dioxide with the carbon improved the voltage. Also a salt water with aluminum salt ought to help as well. Can you make aluminium salt with the help of muratic acid and hydrogen peroxide.

You probably shouldn't use a metal to contact the carbon sponge, because together with the electrolyte it leads to corrosion. Instead, you have to use something like graphite, which doesn't suck in electrolyte, and then contact the graphite.

Have you considered using hydrated chicken feather that have been popped like popcorn around 700 degrees. This will produce carbon nano tubes with many applications. Such as hydrogen storage and graphine applications

Robert you are an amazing man. I like that you support open-source and oppose patents. I'm an engineer that works independently too, and I abhor how the government only seems to support big businesses. By keeping everything free and patent-free, we can sidestep ridiculous bureaucracy and the hideously unethical practices of corporations. I will support your indiegogo project next week when I've got some money in the bank, and I will put it on my facebook page to spread the word.

@ThinkingandTinkering

10 жыл бұрын

cheers mate - the thing about patents is it screws everybody including the epatent holders - it's the main reason the US lost its position as the world electronics centre to Japan as in order to make anything the Americans have to run a whole gauntlet of patent problems but the japanese who don't have the same restrictions raced ahead.

@ochuspokus

10 жыл бұрын

Yeah that's right. I think it's also the same in South Korea as in Japan too.

@ThinkingandTinkering

10 жыл бұрын

we are screwing ourselves - still - i think things are changing

You sir, are my idol

@ThinkingandTinkering

10 жыл бұрын

lol-cheers mate - not quite sure what to say lol

Thanks for the great video. Could I ask you a question? Is it possible to build a magnesium air battery in a canister like form and shape? Me and 2 of my friends are making a Magnesium Air Power Bank for our research project for our 4th Year in High School (2nd Year HS in K-12 countries) And is our research possible? Thanks

@ThinkingandTinkering

10 жыл бұрын

yeah sure - it's obviously an air battery so you will have to account for that but if you get airflow right it is do-able

@RPST10

10 жыл бұрын

Thank you very much, sir, for your professional opinion. I never thought you would reply so quickly :-D

@ThinkingandTinkering

10 жыл бұрын

Reuben Patrick Tolentino no worries - I always try to be prompt

How will the sponge material hold up against NaOH or KOH ? Will the graphene protect it from breaking down?

@ThinkingandTinkering

10 жыл бұрын

should do - it reacts badly with acids - but there are a whole range of foams you can use

sir Robert, when you say "separator" does it mean porous material for the electrolyte or completely repellent ?

@ThinkingandTinkering

6 жыл бұрын

porous for the electrolyte mate

@cvbngfertyfdgh2121

6 жыл бұрын

thanks your videos are interesting

Another problem with using NaOH or KOH as an electrolyte is that they will react with the aluminium whether you have any load connected or not, and the reaction can become very exothermic and violent with bigger batteries and higher concentration electrolyte, producing loads of hydrogen gas and heat.

@ThinkingandTinkering

8 жыл бұрын

true enough

@clackdwack

6 жыл бұрын

then design it that the alluminium is retracted after use

You keep mentioning in this video that aluminium rusts but it doesn't it corrodes but doesn't rust would you explain to me what you mean or are you saying that it corrodes which it does but I'm just trying to find out what you mean by it rusting as it will clarify my views on this brilliant material

Can your carbon electrodes and powders be used to make a better iron flow battery. I.e. Amri

Interesting. Two question though, after adding electrolyte how long does it last and is the process reversible? Thanks !!!!!

@ThinkingandTinkering

10 жыл бұрын

it's a metal air battery -they are not really reversible - it will last until the ali is coated with oxide - if you use a different electrolyte it will eat away the oxide and it will last until the ali is gone

@tbrindan

10 жыл бұрын

Robert Murray-Smith Many thanks for the reply. What electrolyte should I be using in-order to eat away the oxide layer? :)

@ThinkingandTinkering

10 жыл бұрын

Have a google search and see what is currently being used - there are quite a few and theyare used for a whole host of reasons - for example salt water is really cool for emergency batteries, the japanese pissed on it - an interesting idea!! to name just a couple - so have a look around and see what you fancy experimenting with

@ochuspokus

10 жыл бұрын

Robert Murray-Smith Haha the japanese are too funny for words. How about if the aluminium was granulated, wouldn't that have a faster reaction and hence give off a bigger current?

@ThinkingandTinkering

10 жыл бұрын

yep - the voltage wouldn't increase as it is limited by the electropotential of the reaction but you would get the amps out quickly - that's not necessarily a good thing - but if you had a reason for doing it then why not

Sir is it rechargable or not

Hmm. I've been subscribed to your channel for a small while, hadn't seen this yet. I actually have an aluminum foundry and machine tools - and nearly a ton of clean aluminum that I have melted into ingot. Could you send me a message? I'd like to hear your opinion on scaling these batteries up. Thank you

@ThinkingandTinkering

8 жыл бұрын

+Kevin Keel I think there is a bit of research to do on them yet mate

@melgibson6331

6 жыл бұрын

2 years Late but just letting you know aluminum is a heavy metal just like lead and mercury and will build up in nervous tissue. It causes the same damage over time.

@chriskelly4619

2 жыл бұрын

@@melgibson6331 what you said is true. But we have to have abalanced approch to everything that is something Robert is trying teach. Handle things out of knowledge and learning while being responsible for our actions. Al,Hg,Pb never belongs in living organisms but Al is the 3 largest quantity element in the earth's crust. Hard to avoid it, might as well us it for good in a resposible way. That's whats missing.People being held resposible for their own actions.

Magnesium air or metal air

Hi. Great videos. I was wondering, can you demonstrate how the molten air battery is composed? The type of molten air battery I'm talking about are the Iron-air, carbon-air, Vanadium Boride-air battery described in this link: www.nanowerk.com/spotlight/spotid=35726.php. The electrolyte is molten salt. I'm just wondering exactly how they work and are made. They are rechargeable and have huge energy densities. It would be interesting to see one demonstrated.

@ThinkingandTinkering

8 жыл бұрын

+Michael Bourne Sure mate - i will have a think and try to find the time to do it

Does the color of the ink is important. Mine is not working it drops down very fast

@ThinkingandTinkering

10 жыл бұрын

what ink are you using?

@eshaverma9641

10 жыл бұрын

Purple

@ThinkingandTinkering

10 жыл бұрын

you need to use a conductive ink - india ink is supposed to be conductive

@eshaverma9641

10 жыл бұрын

thanx

@ThinkingandTinkering

10 жыл бұрын

Esha Verma no worries

Will it work if the battery is enclosed in a box?

@ThinkingandTinkering

7 жыл бұрын

the air has to get to it mate - it's an air battery

@milanaryal769

7 жыл бұрын

it keeps on needing fresh air?

@ThinkingandTinkering

7 жыл бұрын

what do you think mate?

@milanaryal769

7 жыл бұрын

Yes probably

@ThinkingandTinkering

7 жыл бұрын

there you go

I wonder if a real sea spong would work better. Real spongs have far superior properties compared to man made sponges. Porosity, retention of fluid and low resistance to fluid flow thru it. Maybe those properties would benefit the carbon electrode. We often have to copy God's design to do things better.