This video describes the construction of an EDLC (Electrostatic double-layer capacitor) supercapacitor with WIS (Water in salt electrolyte) electrolyte.
The use of a high concentration of salts in the water makes it possible to reach high working voltages of up to 2.8 volts, comparable to those of
commercial supercapacitors that use electrolytes based on organic solvents, which are typically flammable and toxic.
This video is a follow-up to my other 2 videos: "Flexible graphite sheets for batteries" • Flexible graphite shee...
and "Electrodes for Supercapacitors" • Electrodes for Superca...
Link:
00:00 Introduction
01:19 Materials used
01:48 Preparation of the double sided electrode
04:31 Electrode coating with activated carbon
06:01 Supercapacitor assembly
13:24 No-load voltage trend
13:36 Capacity measurement
16:14 Test under load
19:29 Results
Music by: Trygve Larsen, Praz Khanal, 22941069,Oleksii Kaplunskyi, Jonas. From Pixabay.
Other web pages of the author: claudiohomelab.altervista.org/
#supercapacitors, #graphite, #WISelectrolyte, #electrodes,#carbonblack
Great
Glad that you know the best water based electrolyte for super capacitor is sodium perchlorate, but may aluminium perchlorate give higher capacity
Thank you for the clarification
I follow your channel with pleasure. Could you please add subtitles?
Thank you for your appreciation. I know that for a few hours after publication the subtitles were not visible, but now they should be seen
I suspect one might make a more active surface area by adding some the salt to the carbon slurry instead. When the water dries the salts crystalizes. The theory is that later when water is added, the crystals disolve and leave behind voids for ions to hide their charges in when the plates are charged.
It could be an idea to experiment with
@@claudiohomelab8181 science is testing hypothesis. Many hypothesis don't work, but we always learn something. And work or not, interested people will watch to learn.
A soft bristle brush would have made saturating the cotton easier
شكرا ياسيدي لايوجد قطب سالب قطب الموجب؟؟ ❤
يمكن أن يكون القطب موجبا أو سالبا ، ويتم إنشاء القطبية من الشحنة الأولى ومن ثم ينصح بالحفاظ عليها.
I am a little curious why you didn't soak your layers of non-woven cloth in the electrolyte and then use your press to compress them down to a desired amount of saturation. I feel it would probably result in a more even spread of the liquid. Either way, this seems like a decent result from a home lab an a terrific way to turn a marginal supply of power into something useful.
I have to admit that soaking the non-woven fabric directly into the electrolyte is a better solution, in fact in the preparation of another supercapacitor I adopted this technique
@@claudiohomelab8181 I look forward to more of your videos in the future!
@@bearnaff9387 OK