Graphene Supercapacitor Based Battery. Charges in Seconds...




I've put this info up before but I hadn't revealed to anyone that it was a graphene super capacitor. After much trial and error, I figured out an excellent way to make graphene in quantities I could use to put on a film and them have rolled into a capacitor. I paid a good deal of money to have a manufacturer, create the capacitor, using my graphene film.

The capacitor in the battery is approximately 3500F, rated at 2.2 to 3.8 volts.

The steps throughout, document the construction of the battery itself.

Please support this on my Kickstarter, so that I can get this funded and actually get graphene capacitors produced and available on the market. They are AMAZING! Such an enormous amount of energy storage potential in a small package. Not to mention, the battery charges in seconds!

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Step 1: Building the Circuit Board

What you see in the picture is the capacitor and the beginning of the circuit board. The purpose of the circuit is to efficiently drop the 2.2-3.8 volts from the capacitor to the 1.5 volts you see from a AA, C or D battery. There is also a voltage monitor IC on the board because the capacitor can become damaged if the voltage drops below 2.2. The monitor basically enables the regulator as long as it detects a voltage above 2.2

After everything was hand soldered on to the board, I cut it and sanded it down to a circular shape that would fit inside of the battery tube.

Step 2: Putting It All Together

Here we have the capacitor inside of the battery tube with its leads sticking out. In the middle, you see the finished circuit board, cut down to size and ready to be hooked to the capacitor.

Step 3: The Charger

Recharging the capacitor was another issue. It needs 3.8 volts to charge it but you can't charge it through the top and bottom because that is the + and - terminals of the battery that is putting out 1.5 volts. So, towards the top of the battery, the casing is base metal. That bare metal is hooked to another regulator that drops 5 volts to 3.8 and then leads to the positive lead of the capacitor.

The charger itself makes a connection to the negative battery terminal and then there are 2 connects that contact the sides of the battery, allowing the capacitor to charge.

Another great thing about having a capacitor as a battery is the fact that it recharges in less than 30 seconds!

Step 4: All Done!

There it is, next to a standard alkaline battery. I've built a total of 4, with 2 of them powering one of my daughters toys for a few weeks now. It lasts just as long as the alkaline you see next to it but charges in under 30 seconds. Please support my Kickstarter campaigne so that I can get the batteries and at the very least, the capacitors out to the world so that everyone can have access to a graphene capacitor. The possiblities are endless with them! This isn't an advertisement by any means. It gives a general idea of the construction of it and the fact that the graphene capacitor is out there!

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    26 Discussions


    3 years ago

    Not real info but after investment? I think not...


    4 years ago on Introduction

    I want to work on this project, but where to source this graphene super capacitor ?


    5 years ago on Introduction

    Diggin through some files on miy harddrive I found a "save" of a comment I posted on instructables some month ago. Guess the instructable I commented on, it was the 1st edition of this. As promised, here is my backup (I do not accept censoring, no mercy).


    origional comment below (I don't have a backup of any links, sry):

    "Usually I wouldn't bother to comment any kickstarter project, especially if it isn't as good as promised. If people can find enough buyers, why not. But this isn't kickstarter, it is an advertisement which is not allowed by the guidelines, so I don't mind to blow your illusion.

    I was able to track down exactly the type of capacitor you plan to use by the size of an AA battery and was surprised how expensive they are (I won't post it, you have to search yourself). The price you sell your batteries at is more than fair at comparison, so I'm assuming you didn't plan to "rob" the people and are a really nice person.

    However I've done a project with a supercap before and your promise seemed a bit "too good to be true" so I did my own calculations on how much energy you can get out. I didn't even get close to the claim "providing power for the same amount of time as comparable batteries". Let me explain:

    You may have heard the formula how to calculate the amount of energy stored in a capacitor, it is E = 0.5 * U² * C. If I put the numbers in I get an absolute maximum energy stored of 288.8J. This special type of capacitor can only be discharged to about 2.2V so there's still plenty of energy left we can't take into account. Applying the same formula there is 96.8J left, leading to a maximum possible usable energy of 192J. And I'm ignoring all the losses of the circuitry inside, which may be an additional 5 - 15%.

    In comparison to the average NiMH battery which can hold about 9072J (that's not a typo, source) it can hold 2.1164% of that which is barely anything.

    In addition the shelf life might be pretty short. I reduce the losses to a bare minimum I'd use a switching dc-dc buck regulator. So I looked up what the typical quiescent current (no load) is, the lowest value I could find (I've compared two dozen) was something around 40uA, but some deviced had also a quiescent current of more than 2.5mA(!). I ignore the voltage supervisor chip here, assumed you did some very good research and managed the total quiescent current to be about 40uA. Using this calculator I get a lifetime of around 1600000s which are about 18.5 days. This does not include the natural discharge of the capacitor itself, because there wasn't any data on that.

    So at least the charge time is great, is it? To allow a comparison I'll take to the time to charge the battery from empty to full but the time to get a certain amount of energy into it. This kind of battery charges at a rate of 192J in 28s, so at about 6.857J/s. With a special charger it is possible to charge some special NiMH in just 15 min (how it works/a look into the charger), so it takes about 900s to charge the battery fully. That are 9072J in 900s or 10.08J/s which is again better that your battery.

    All in all your idea is, well, doomed to failure. I don't want to be mean or anything but I highly doubt that you'll have any satisfied customers. If I were you I'd consider to cancel the campaign, if it's possible. This would preserve you from more financial losses. I know it is hard to let a great idea go, especially when you've worked on it for a long time, so I'm really sorry for you. Seriously.

    I've made the experience that unwanted (critic) comments get removed "by author or community request". I dare you to do that. I've saved this comment in a text file, just in case.

    Again, I don't want to hurt you or your campaign, but either you din't know about that before, in which case this knowledge might save you a lot of money, or you knew that before, but lied to make money (I don't assume this, but it is a possibility).

    - nqtronix"


    5 years ago on Introduction

    Is this a mistake or a joke? Prematurely posted before any specific details were added?


    5 years ago on Introduction

    This guy is either very gullable or wants to rip people off. Here's a great technical explanation about why this is BS:

    2 replies

    Reply 5 years ago on Introduction

    and of course its by the crazy aussie bloke who knows his stuff. and is more than credible. gotta love dave


    5 years ago on Step 4

    Unfortunately you didn't show how the capacitor was made, or a schematic for the circuit, or any hard test data showing how you measured the capacitance or the life of your battery replacement. Rather than assuring us that: "This isn't an advertisement by any means" perhaps you can fill in a few more details so we can see for ourselves how good this invention is.


    5 years ago on Step 3

    The contacts look a bit flimsy for 160-ish Amperes ?


    5 years ago

    interested to know if you have checked how many amp hour you can get out of one of these

    3 replies

    Reply 5 years ago

    thanks for that. quite impressive capacity for it's other features. I've wondered before about using capacitors as battery cells. well done


    5 years ago on Introduction

    What evidence/data have you got to back up your claims regarding charging, energy density and discharge?

    1 reply

    Reply 5 years ago

    I think that data would definitely encourage possible investors in the kick starter


    5 years ago on Introduction

    Is this different than the existing 3500-4000F range supercapacitors available commercially? If I remember correctly those also have similar charge times.

    2 replies

    Reply 5 years ago on Introduction

    Capacitors in the 3500-4000F range made by Maaxwell Technologies are somewhat larger than a D size battery and they are rated at 2.5-2.7 volts.


    Reply 5 years ago on Introduction

    I see, I didn't realize how small your capacitor was. This would definitely be useful in place of AAs.