I was searching for a flow battery solution with only the liquid as a energy source. So a bigger tank, simply means more storage. So thanks for the info!

Nice demonstration! Really interesting cell.

So weird how great minds think alike! I was researching the other day how to make one of these at home... Appreciate the video! Has given me some new ideas! I'm so glad to see I'm not the only one doing these weird at home experiments haha

Could HCl and NaOH be used to start with or do you have to have the power input to populate the electrodes? Many thanks. Always watching. I had no idea you could make these chemicals from just table salt.

Hi @cayrex, the 3d printed models you used, are they somewhere available online?

Good job sir very interesting

Great stuff. You make great battery videos. I would like to see you create a diy membrane for a flow type battery.

Still watching you mate 😎 Very interesting !!

Fantastic demonstration! Do you know how much performance will degrade with a larger gap? For example the radius of your container between electrodes. And I'm wondering what the highest specific power would be given that the conductivity is quite low.

I have forgotten if this was mentioned but would their be any reason not to add koh3 into the mixture ?

My friend, this is next level.

Is this a sodium ion battery like north volt is producing? Do they use manganese as we'll?

Hey man, i'm pretty new to the channel, but i've stumbled onto this video because i was researching salt batterys for a school project and altough this video is great to quickly learn the basics, i did have a few questions about the material used: 1. U use some kind of ion exchange pad, which is needed to sufficiently make a salt water battery, but they are hella expensive, the one you are using however seems really usable, since the surface area of the membrane itself seems small, did you make that urself ore can we buy it somewhere? And where did you get your membranes? 2. If i 3d print the parts, i assume i cant use pla, since the acidic environment will eat it away, any tips on what filament to use instead? 3. Since im planning on 3d printing it, but i dont have acces to an resin printer, so i cant print rubbery materials, any tips on stuff i can use to make it water tight? Some kind of rubber? or can i use silicone sealant for that? And lastly: any overall tips to make it as efficient as possible? Love your work man, its really helpful! And if you share the info i will assure you i will only use it for the school project, As a form of communication: I will also post this on you latest instagram post, u could message me there, or just reply here.

I understand soduim sulphate offers a wider voltage window. Upwards of 1.5-4.0 volts

Hey do you have any good recourses that explain gel polymer electrolytes on a high level? Could you please share any sources?

Interesante es pila recargable felicitaciones.. Has hecho pruebas cuanto tiempo mantiene la carga en reposo...

You know you have reached expert level battery researcher when you use the terms anolyte and catholyte 😉 Enjoyed the video, thanks! Also loved the music in this video!

Nice video my friend. How about some vegetarian gelatin instead of Nafion membrane?

Nafion looks expensive... Is there cheaper alternatives?

@ppusopa220

7 ай бұрын

Yeah, depot still have patern. Will be expensive for a while. I have been looking for alternative fir a while. Liquid Glue crossed link by acid does not last long.

@ppusopa220

7 ай бұрын

...dupont..i mean

@Giarko

6 ай бұрын

Unfortunately not sufficiently reliable

@evanriddle1614

Ай бұрын

I've used coffee filters with pva wood glue (like he said) and to extend it a little, I run the paper and glue once dry through a heat press at 350° F and try not to scorch it too badly. It works better than just plain paper and lasts noticeably longer. You go C Rex!!!

Can you start using hydrochloric acid and sodium hydroxide as starting materials so it would be charged already?

Hi there. very interesting stuff. i have seen all ur videos and was wondering would u do a followup on the vanadium flow bat ? and if u would build a flow battery what chemistry would u use? thanks and keep up the xperimenting

@cayrex

7 ай бұрын

Yes I will make a followup of vanadium flow battery. Hmm it is hard to tell which chemistry is good to use in some battery system, because all or most of chemistrys have pros and cons. For this reason I start with the project called "Hyperflow" a multi material cell years ago. But on the another side,... some all manganese or metal halide chemistry will be interesting.

Can you have a natural circulation like those acid and base are going to separate like emulsion or so so if you have a displaced reservoir are they going to sor themselves ?

@evanriddle1614

7 ай бұрын

Kinda like thermosiphoning? Yes, I have a problem with the need to pump AND charge. Round trip efficiency and all that. Cool though. Wow!

I was half way through the video when i jumped to make a comment proposing making this battery to a simple flow battery. I made that comment and then proceeded with the video only to be pleasantly surprised. Charging and discharging could be done with the motors in series so the pumps work with current during charging and discharging.

@Harbie

7 ай бұрын

I believe the direction of the flow doesn't matter. If there is flow, the reaction occurs continuously. Otherwise the energy potential of the liquid runs out.

@kreynolds1123

7 ай бұрын

@@Harbie yup, the direction of flow doesn't matter if there is one container for analyte and one container for catholyte. Charging or discharging you always want to pump to avoid overcharg or over discharge. Alternately, If you have 4 containers (2 analyte and 2 catholyte) then direction of flow through a pump would depend on if charging or discharging.

Excellent video and very interesting! I am not sure if this reaction produces HCl though. Sure the equation balances, but would you not just rather get water containing dissolved Cl2? I think that will also test as an acid. Anyways you have my attention, i want to try it at home!

Can heat rising fluid suffice instead of motor pushing liquid? Or density bouyancy of different densities perform the flow?

Hi😀 very interesting stuff. Which of the two demonstrated cells has a larger storage capacity and aproximatly how much storage can it hold? What would be expected lifespan for each of the two batteries and how is efficency? Awesome channel, i've just helped u via paypal😁

Seems like you will be depleting the electrolytes, with losing cl2 and h2 (charging at 2.5V). Or do you think you are just moving concentration of h+ and thus have a type of concentration cell?

@cayrex

7 ай бұрын

Yes, here I overcharging the cell. With overcharging I get faster reaction, but I also note that the cell voltage is in region of 2V. Same effect you can get when you use for example a zinc manganese battery with alkaline/acid electrolyte (2.3 to 2.5V)

Very nice! It would be good to measure the total capacity of the small battery and efficiency of charge. Also make some projections of the possibilities if scaled properly.

@kreynolds1123

7 ай бұрын

It would be nice, but mostly useless because of too many variables that would be dificult to characterize well. 1. the poor size and conductivity and geomitry of the carbon felt. 2. The volume and electrolyte concentration and how much. 3. Temperature and pressure placed on plates and how that might change the carbon poors. Sodium sulphate has a higher voltage window than sodium chloride, Resulting in a higher energy density. And minimizes the potential for off gassing like chlorene with sodium chloride.But nafion membrane is slightly more resistant to sulphate ions, but still has good chemical stability.

Yeah it's a good demo for a simple battery, just unfortunate that it requires an expensive membrane. Wonder if PTFE tape might work since it's from the same chemical group? 😁

Its a lot cheaper than vanadium. It would be interesting to see some comparisons between your 2 flow battery chemistries using your electronic load showing graphs. 👍

@cayrex

6 ай бұрын

Yes it is cheaper,.... but the vanadium is already verified technology which the salt battery tech is only in experimental stage look at AQUABATTERY for more details of salt battery. The salt battery have the capacity from 10 to 20 Wh/l and the vanadium flow battery have the capacity around 25Wh/l

From one Made-In-China Fuel Cell many informative videos, that's crazy 😂

@cayrex

7 ай бұрын

Hahahhaah yes,.... almost. To this date I sacrificed 4 fuel cells for the projects. Heheh

@irfanjahania1654

7 ай бұрын

❤️

Very nice, what is the current rate of this stop?

@cayrex

7 ай бұрын

In short-circuited is the current around 700 mA

So good, thanks for sharing For some time now I had been thinking about the possibility of making osmotic membranes using objects from nature, for example, the skin of an onion, or banana leaves, or bamboo pods, cuts from tree trunks have been used. of the lime tree, of a few millimeters to desalinate seawater, successfully I think some types of wood cut crosswise could be used, it is a good essay topic. all the best

Nafion membrane's ?

Is it completely specular? Can it be reversed? I mean polarity? What would happen?

@cayrex

7 ай бұрын

When the battery is discharged, then you can reverse the polarity if you want. But I dont know why you want to do that.

What is the power output? density and so on?

@evanriddle1614

7 ай бұрын

And then it goes back to salt water after discharging. Get outta here!

@matteoricci9129

7 ай бұрын

@@evanriddle1614 I didn't understand the answer but yes I like it, man it is just salt, I've got kitchen (and the floor full of it and since I'm Italian and superstitious I need to pinch some of it down my back not to bring bad luck )

What kind of membrane are you using?nation?

@synchro-dentally1965

7 ай бұрын

The subtitles said napon. I did a search and found Nafion membrane?

@irfanjahania1654

7 ай бұрын

this is nafion membrane

@cayrex

7 ай бұрын

It is nafion membrane

@cayrex

7 ай бұрын

@@irfanjahania1654 Correct 😉

@BillEffinMurray

5 ай бұрын

​@@cayrexDiy just buy specific specialty materials found no where but one company

super cap? or just hydrogen oxygen gas storage battery. well another salt like baking soda would make oxygen not chlorine. chlorine hydrogen gas fuel cell battery? the membrane makes two compartments for the two different gases, keeping them apart but lets ions pass through. hydrochloric acid battery. oh there is also NaOH in the solution, on the other side.

So a chlor-alkali plant in reverse

Allegedly some cheap natural membrane can be made from banana peel, egg shell membrane or sausage casing (animal instestine) 🤔🤔

How can we make use of simple ingredients to make a minimal power supply for emergency use? I have been searching/researching this for some time but keep hitting a brick wall. There are so many scammers out there, eg. people who claim that it is possible to make batteries using sparkplugs is possible. Many people say this [spark plugs] is a scam.

@cayrex

3 ай бұрын

A battery using spark plug?

@wendyhughes2234

3 ай бұрын

@@cayrex Search on YT and there will be many YTers who claim it is possible to make a power source/battery that is made/built by using spark plugs as the main [charge]?

Katode dan anoda mengunakan titanium ... apa bisa diganti Chromium ?? Sistem hampir sama Vanadium baterai .. Katoda ::: Ti ----> Ti2+ Ti3+ Ti4+ V -----> V2+ V3+ V4+ V5+ Anoda reaksi asam Chlodide Cr , Mn ion sama vanadiun dan Titanium , Apa bisa digunakan ??

@cayrex

7 ай бұрын

Some time ago I work on Mn//V battery system

@SudirjaAdmojo-ev9si

7 ай бұрын

​@@cayrex Mantap ... saya sangat senang dan suka dengan praktikum yg mudah di fahami . Akan saya lihat video Mn dan Vanadium Terima kasih , Cayrex ,, good job 👍👍👍

Why don't you buy a pH pen?

@cayrex

7 ай бұрын

I have electronic ph meter,.... but then I need to wash the probe each time. With ph sheets was more quicker 🤭

this is the coolest thing i've ever seen, why cant this be used in a electric car? instead of expensive lithium.

@cayrex

7 ай бұрын

Yes I know,... it is more or less cheap and have good cycle life. But the problem will be the low specific energy 😔 It is in range of vanadium redox flow battery,.... around 25Wh/kg

Great now discharge the battery and lets see what happens to the electrolyte

@cayrex

7 күн бұрын

For sure,.... after completely discharged cell the electrolyte have the ph around 6.5

Sorry all of this question but I'm a noob

@cayrex

7 ай бұрын

No panic,.... is all ok ;)