Diy Zinc Bromine Battery
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- Опубликовано: 10 сен 2024
- Zinc Bromine Battery which have similar cell design like Zn - Br gravity cell, but this one have more safer construction with simple materials.
Zinc Bromine Semi Flow Battery
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The structure of your battery is very inspiring and offers a lot of room for optimization.
Well done! Good job. Keep it up.
You keep beating Robert by months. I think you are his hero
It's a superb Idea to bind the electrolyte in / with sand and seal it with wax. All more or less harmless materials. Well done; will keep this in mind for my own projects!
👍
As of my last knowledge update in September 2021, zinc bromide batteries were primarily used in large-scale energy storage applications, such as in grid-level energy storage systems. These batteries are known for their high energy density and low cost, making them attractive for such applications.
While zinc bromide batteries are commercially available for large-scale energy storage, they are not commonly found in rechargeable consumer products that are available for purchase by individual consumers. These batteries are typically designed for stationary energy storage and are not widely used in consumer electronics or other portable devices.
It's possible that developments have occurred since my last update, so I recommend checking with battery manufacturers or industry sources for the most current information on the availability of rechargeable zinc bromide batteries for specific applications.
I don't very often comment on RUclips but, between you and Robert Murray Smith, I'm inspired. And, yeah... I have to put you in the same category as him because you try really simple stuff (absolutely loved your "solid state" ZnBr2 battery) that actually works and are the epitome of creating some awesome "What If" tubes. This kind of explains how a ZnBr2 "Gel Cell" works. Very well done especially on this subject.
The reason why I'm so interested in what you did on this flick is because, unlike other batteries (and if my understanding is correct), the more electrolyte you have in a ZnBr2 cell, the more total power you have.
To your credit, as well, the information you've portrayed in this area is like what Robert Murry Smith demonstrates... timeless information that will be useful forever.
And, I have to ask, what are you using for the video camera and mic? It's VERY clear/stable even as close up it is and sound is perfect. I'd also be interested in knowing what you're using for a video editor, please.
Hi! Oh, is really refreshing to hear your comment. Thank you.
Yes,... the capacity of the battery depends on the amount and concentration of the ZnBr2 electrolyte. Because here in that ZnBr2 electrolyte is stored Zn and Br which you in basic need that the battery will work. And now,... more and more concentrated will be the electrolyte more Zn and Br you can form.
Heh,... to record my videos I use my phone 😊😁 some time ago I was using samsung S10 and now I use samsung note 20 with camera tripod. The software will be vegas pro.
Nice Cell :-)
Maybe a round carbon rod cathode and a thin zinc sheet anode around the beaker wall, for increased power.
Not bad idea.
Thats a great solution. Does the sand stop zinc dendrite formation?
Awesome Sir
Very nice.
cayrex , I have an idea. If we dissolve zinc bromide in water, place it in the battery, and heat the battery with the help of the sun, the boiling temperature of the bromide is 59 C, as far as I can see. Bromide, which boils and separates from the electrolyte, is transported to the hot electrode heated by the sun. Is it possible to design a system where the zinc in the anode and the bromide in the cathode form a solution again after the electrolyte cools down when the sun sets?
they sell sodium bromide on ebay 25lbs of it for less than $10 a pound.
I think one should compare instead of sand with silica and show the result whatsoever is gained??????
Zinc bromine battery is like zinc bromine battery,.... 1.8V of cell voltage,... capacity is related to the amount of electrolyte,.... the silica version have better power output but the sand version have cheap and simple way to make a Zn-Br cell safe. Because you only need wax and sand, which can you get everywhere for a few cents,... for example.
I think I might try this with washed silica sand anyhow. can buy the stuff from a mine near me for like $10 for half a metric ton XD Actually getting the zinc-bromide is the hard part. have to buy zinc sulphate and sodium bromide to make it up myself =/
How do I make the zinc bromide?
Zinc Bromine liquid? (or powder dissolved in??)
Thanks for sharing this approach seems solid. I wonder how the issue of dendrites is handled here?
About the dendrites is that cell not bad. I charge the cell with 3 volts with no problem. At 3.8V overcharge for longer time I get some problems with dendrites but still this is not a big problem for that battery because the cell will stabilizes itself when you stop charging.
@@cayrex ok good to know, thanks
Coool
Absolutely brilliant stuff @cayrex2 - Can the zinc iodine battery be made similarly, with sand?
Thanks. Yes of course. At the start first that cell design was ment for zinc iodine battery anyway. 😊
Congratulations on the awesome video! This was way simpler and cooler than I thought it would be! What was the normal voltage you charged this battery at? Thanks for finally listing your NCS song credits in your description now! Any chance you will test wh/kg figures for this setup?
Thank you! I charge that cell on 2.8V to get good amount of charging current, because of the distance of the electrodes. You know,... biger is the distance of the electrodes less charging currend you get and for that you need to put the electrodes more together or you increase the voltage. Yes I start to put a credits of all songs in description. Yes I will test the specific energy whith this cell setupe,.... but I will make some other more practical cell design.
Couple of questions:
1. How would sponge hold the electrolyte?
2. How would you recover zinc bromide from sand? Distilled water wash?
Sponge is also not bad,... more electrolyte can soak better it is. But sand more nature material also. When the cell is discharged the electrolytei is back ZnBr2. You just wash the sand and you will wash out the ZnBr2.
@@cayrex Thanks
I thought the bromine sink to the bottom even with the sand. Should the electrode need to be at the bottom too?
Well done! Really love the practical, cheap and safe cell. With the two electrodes being next to each other, rather than the positive being at the bottom, will the bromine not diffuse over to the zinc and short the cell?
The bromide will not form over the zinc electrode, because will form zinc bromine again.
@@cayrex I guess I am just wondering, without the vertical separation by gravity, if it will not hold its charge. Easily fixed by just having one electrode at the top and the other at the bottom like the regular gravity version
@@StefanWiswedel here in my versions is that not the problem
I am busy making some zinc bromide using @robert murray-smiths method, where one mixes 2M solution of NaBr and a 1M solution of ZnSO4 and then evaporates off 75% of the water, cools and pours of the ZnBr2.
Do you know if I can just add the same weight of salts in 25% of water, bring to boil to dissolve and then cool again? Would this have the same result? Boiling off that much water takes lots of time.
Sorry to ask you, but he gets so many comments that he rarely replies. Haha
Won't it develope pressure under the wax seal? Good video.
No. I overcharge the cell for longer time with no noted problem of pressure
@@cayrex thank you!
Well done! Would you have any recommendations with regards to maintenance of these types of batteries? I mean, in your battery example, if you were to use it for off grid, what would you have to do? You mention washing the sand of the bromide but would you even have to do this in this rechargeable battery? And I must say, you also have earned my subscription. Thanks for all you do!
Hi! Oh, thank you 😊 Recommendations for maintenance!? Not really. Chemistry can last several thousand cycles and after 20 or 30% loss of capacity you only discharge the batterie with short circuit,.... that all zinc and bromine will react to form ZnBr2. And in the end you only wash the sand to wash off the ZnBr2 salt. 😎
@@cayrex thank you for your reply!!
@@bigonprivacy2708 No problem
Very creative...have u cycled cell ?????
What a great way to make this type of battery, the sand also acts as a seperator i assume? and very nice to use the wax to seal it off! I like it :)
Tnx. Yes the sand acts also like separator.
@@cayrex Thank you! What about dendrite forming? Can this type of set up last for decades without maintanence, or do you make something completely else. What do you think?
@@markgeurts258 Ah, the dendrites have hard time in that cell 😅. You make the cell, you seal it and forget about the cell. At worst case you will need to add some water,..... but that is only speculation.
@@cayrex I LIKE IT! And now even more:)
@@markgeurts258 but make sure that the negative electrode dont go to the bottom, like it is the carbon electrode. So the negative electrode is putted 0.5 to 1 cm above the bottom of the cell.
try silver gold for 1.5v enough
Isvits rechargeable?
i have 50 gram pure zinc bromide, what is the dilution ratio to make 2 mole?
ZnBr2 have molar mass of 225 grams/mol,.... which means you need 225 grams in 1 liter of water or 22.5g ZnBr2 /100ml of water, etc. To make 2 mol,... you need 450 g in 1 liter of water. Or in your caser you make 2mol with, 22.5g in 50ml of water or 45g in 100ml of water.
Any self discharge????
Where does one get the bromine?
Sodium bromide on ebay
Please, what are the ingredients, and how do we get it. Thank you?
hmm, ok....
Materials:
- Zinc plate (min 98 - 99%) ---- eBay
- Graphite plate --------- eBay
- Sodium bromide ------ eBay
- Zinc sulfate ---------- chemical supplier
- Lab beaker -------------- chemical supplier
- Sand -------------- I stole from my daughter! 🙊😆
- Wax --------------- local technical store
nice video. Have you tried Fumed Silica for the 'gel' agent? It would be nice if you would do a video on multiple parallel plates to show increased capacity. Especially with these static Zinc-Br batteries! Thanks for sharing this. Doug
Hey man! Yes I try fumed silica. But using sand was for me much more fun and you can get it everywhere for really cheap price. So if someone will make a 10, 20 liters or more cell system for home storage with safe setupe that the electrolyte will stay in place, then the sand will be a good and cheap choice,.... for example! Yes I will make multi cell setupe,... but first I need some materials to make it,...
I am not getting more than 1.71v, How you are getting 1.9v is surprise for me when keeping such distance between two electrodes and no load connected.
Uf, maybe charging problems. The distance is not the problem for voltage,.... but for current output is.
Whay is sent?
Some normal sand for kids.
So, you just made a znbr batt in silica (sand) gel? This is pretty common but good job!
😉
scent ?? wtf is scent??'
Scent? You mean sand?