Hybrid Ultra Capacitors P-EDLC for energy storage

[Migueldeservantes]

U have my deepest gratitude! that was what I was looking for! your answer have really help me to grasp the way that capacitors are been referred and classified!

Thank you very much!

[Migueldeservantes]

I understand perfectly the physics and mechanics of how an capacitor work! what I just can't understand is Uf Mf picofarads and micro farads! don't know what is a 0.001 Uf! some thimes I see it on diagrams bur if I don't purchase it I just don't really understand it!

[electrodacus]

@Migueldeservantes Not sure I understand but I try to answer what I think you are asking.

From high to low 1kF (kiloFarad) > F (farad) > mF (millifarad) > uF (microfarad) > nF (nanofarad) > pF (picofarad)

Between each of this there is a 1000x factor so 0.001uF = 1nF = 1000pF this is one parameter of the capacitor the other is the max voltage allowed so that the dielectric between the plates dose not get destroyed.

2uF/10V capacitor will have 2x the plate area of an 1uF/10V.

[Migueldeservantes]

Do U think that you can make a video showing and explaining capacitors? Uf, Mf, Picofarads! I just don't really understand them! please! Thanks!

[electrodacus]

@Migueldeservantes I was thinking to do something very basic about electricity so anyone can understand.

I will use fluid mechanics to explain. Water pipe will be a conductor water the electrons and capacitors are like a barrel with no water they are full discharged and with watter they are charged now if one gallon is same as one Farad then a uF (microFarad) will be 1/1000000 of a gallon and 1mF (milliFarad) = 0.001Farad or 0.001 gallon this are just units.

[electrodacus]

@cumesoftware Yes for a capacitor the energy density is huge but still much lower than a battery.

I think the most common you will find are 2.5V there are some 2.7V and I think they developed 3V but I do not think they are on the market.

If you want higher voltage the just connect the capacitors in series like I did 6 x 2.3 for 13.8V but the equivalent capacity will be just 37F. You get 6 times the energy of one capacitor from 6 capacitors if they are in series or parallel connection.

[DadHav]

I know we have our disagreements and I understand if you don't answer, but did you mention what kind of self discharge rates might be expected in this hybrid?

J

[electrodacus]

@DadHav Not sure if I mentioned in the video there is some self discharge but is not that bad is worse in the first 24h about 100mV if is fully charged but after that is much, much lower about 50mV / week

Is not that important in most applications since this will be most probably used in application that need daily recharge like solar lights or other similar products that use frequent charge and discharge.

They are better than ultra capacitors but worse than Lithium battery at self discharge.

[DadHav]

@electrodacus

Thank you. That's better than I expected. I see you've experimented with most portable power options. Have you ever tried some of the Low Self Discharge Nickle Metal Hydrides. I really find them useful and in the long run much better than others that brag about higher capacity but are discharged and unusable when you need them.

J

[electrodacus]

@DadHav I used in the past NiMh not sure if there are some low self discharge but they also have limited discharge cycle so I do not think they are economical in long run also they have low charge rate.

As of now I'm a big fan of the LiFePo4 they can be recharged close to 2000 cycle have a very low self discharge and the cost is good for the performance I can find for about 0.5$/Wh in quantities.

They do not have the best energy density but is not important in off-grid application just cars.

[mjlorton]

Excellent video and presentation. Thanks.

[dehoffe]

I love how u explain the technical connections. Nice test setup too. Very useful to learn something. Thanks

[electrodacus]

@dehoffe Thanks, I do my best to keep things simple so people can understand.

Not many people heard about UltraCapacitors and they are available for a long time hope things will change. 

[dehoffe]

I love how u explain the technical connections. Nice test setup too. Very useful to learn something. Thanks

[gtgatlin05]

thanks



[gtgatlin05]

so for car audio which is better a 10 fered hybrid capacitor or a 10 fered capacitor, what is really the difference between the two?

[electrodacus]

@gtgatlin05 I'm not familiar with hybrid audio capacitors but if they are both 10 Farad they will store the same amount of energy and probably the non-hybrid capacitor can deliver the power faster but you may see no difference depending on your amplifier, battery and cables.

If they cost the same and are the same capacity ex 10 Farad then I will buy non-hybrid variant in any situation but if the price is better on Hybrid and they will work on your application then Hybrid my be better.

[TheStevenVDO]

what kind of camera do you use? it's a very good cam!

[electrodacus]

@TheStevenVDO Is a Panasonic DMC-G10 for this video and almost al the other videos on my Chanel except for the first two.

[Professorshift]

Many thanks for posting

Greeting from the UK.

[electrodacus]

@Professorshift Thanks for your comment, I appreciate it.