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Interesting: 10 Uses for Graphene.
Posted on 01/07/2021 8:03:34 AM PST by Red Badger
Have they solved the explosion problem?
A minor inconvenience...................
This interesting because Davis Instruments’ weather stations use supercapacitors to run at night after they have been solar panel charged during the day. A better supercapacitor in them would almost eliminate the need for a back up battery that is often used during continuously cloudy days. That battery has to be replaced annually because of the frequent power draws.
“While lithium accumulators reach an energy density of up to 265 Kilowatt hours (KW/h), supercapacitors thus far have only been delivering a tenth thereof. “
Two errors here. First:
Kilowatt hours is NOT a measure of energy density. It is a measure of total energy. Also known as joules. 1 Joule is equal to 0.000000277777778 kilowatt hour (kWh)
For density, you need to divide the KWh by some volume.
Second, Kilowatt hours is not KW/h. It is KW X h.
What is that in Jiggawatts?................
Have they solved the explosion problem?
—
Gotta love the BOOM!
The ability to absorb a full charge almost instantaneously is a great advantage. Of course the flip side of capacitors being able to discharge their entire charge almost instantaneously has a huge downside if people believe that they are going to be useful for power storage in cars and trucks.
I am not talking about people putting themselves into cardiac arrest or being burned by inadvertently shorting the decent sized capacitors that used to be found in old TVs and radios. No, I am talking about what happens when two conductors with only a large fuse from the power company come together. We are talking about an explosion.
I unfortunately through stupidity, carelessness and being in the proximity of people who had no idea what they were doing have witnessed the awesome power of mishandled electricity first hand. When you are talking about capacitors used to start large single phase electric motors, or for correcting the power factor for large idling 3 phase motors you can be starting to get into the realm of truly dangerous capacitors. But we also have people who obtain giant capacitors for “jumping” cars etc. These monsters can do a lot of damage if mishandled. But this is still nothing compared to the capacities and power of the capacitors that this article is speculating will one day be available.
A capacitor with as much storage capacity as a current Tesla car battery literally could be used as a bomb if the whatever protection was built into it was bypassed. So while I am fascinated by the technology and potential... it is worrisome to think about people someday tooling around town while sitting on top of a massive amount of energy that could all be discharged in an instant in some sort of mishap.
This is the graphene ping list.
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Interesting: 10 Uses for Graphene.
Like a 20 gallon tank of gasoline?..................
Did they get the idea from the pommie guy on youtube that’s been showing us how to make and use graphene for years..???
Red, great post btw, you do good works mate.
Epic Red !!!
Did you notice the lighting in the background was from LiFePO4 battery banks 😁😁🤳
Always fun mate, always
In the movies every car that drives of a cliff or even into a tree seems to blow up. In real life I can assure you that this happens far less frequently, almost never in fact. That is why NBC had to stage a fire with a GM pickup truck on Dateline NBC. Gasoline is not an explosive it just burns very quickly when the right mixture of air to gasoline is present. That is why you can't really blow up a car by sticking a rag in the gas tank and lighting it on fire as shown in many movies and TV shows. The rag just eventually stops burning in most cases. If you had a long enough piece of fabric and it was wicking gas it might keep burning long enough to damage the car.
The challenges with high capacity super capacitors are a sort of an unknown. I only know what happens when you short the capacitors currently available. Even that can be scary. But shorting even two conductors at stepped down voltages used in homes that are not protected by a breaker or fuse can be really scary./p>
I am a tinkerer and was planning on assembling a bank for starting a car with a hand crank, but the expense was more than it was worth to me and instead I purchased one a lithium-ion based emergency jump battery after owning lead based “emergency” use batteies for decades. You can now buy capacitor based “jump starters”. Here is a fun video from a guy who did quite a bit of experimenting. I actually did buy the small generator he recommended and printed a crank for it on my 3-D printer, but it was going to cost a couple hundred dollars more for the capacitors at that time and I decided that it was just too much. At this time the price for the 6 capacitors used in the project is still almost $200 with shipping. https://www.youtube.com/watch?v=9y4pwcFyLOE
Darn..........................
Ui ?
Not on my periodic table...
Am I missing something?
Unobtanium...........................
Unobtanium...........................
Nice.
Tesla has doubled in price in 6 weeks.
I might sell my AMD stock and buy Tesla. The other company that Elon Musk owns is internet service by satellite is something to buy into if they offer stock.
Tesla
https://finance.yahoo.com/quote/TSLA?p=TSLA
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