High school student develops supercapacitor, wins Young Scientist Award

May 20, 2013 by Bob Yirka report
Top winner Ionut Budisteanu, 19, of Romania (center) with second-place winners Eesha Khare, 18, of Saratoga, Calif. (left) and Henry Lin, 17, of Shreveport, La. celebrate their awards at the Intel International Science and Engineering Fair, the world's largest high school science research competition. More than 1,600 high schoolers from 70 countries, regions and territories competed for more than $4 million in awards this week.

(Phys.org) —Saratoga California high school student Eesha Khare is a co-winner of this year's Young Scientist Award sponsored by Intel. She won the award for her battery-sized supercapacitor design which allows for recharging in just a few seconds. The award was part of Intel's International Science and Engineering Fair.

Khare's supercapacitor is meant to serve as a replacement for a small battery, specifically those used in cell phones. She says the inspiration for her design came out of frustration from constantly finding her cell phone battery dead. The supercapacitor she developed is small enough to fit inside a standard cell phone battery housing, and can be fully charged in just 20 to 30 seconds. As if that weren't enough, it also has a much longer useful life offering 10,000 charge/recharge cycles instead of the 1,000 available now for batteries. The supercapacitor is based on nanochemistry, which Khare told the crowd during her acceptance speech is her main area of scientific interest.

As cell phones have grown smarter and more powerful, concern has grown over the ability of battery development to keep up. Khare's supercapacitor suggests that perhaps there is a better way. Capacitors are devices used to store an —though typically little more than conductors separated by an , they are an essential component of most . They help regulate the flow of electricity. They can also be used as a battery, however, as Khare's device demonstrates. Thus far, hers is only capable of powering an LED, but that is likely to change with advances in nano-technology.

The award comes with a $50,000 , which Khare will likely use for college; although, this prize might also help her win a scholarship. She plans to continue her research on the supercapacitor with the ultimate goal of replacing her cell phone battery. She noted that such a would also be useful for powering a wide variety of other devices, adding that it's also flexible. It could be used to power devices embedded in clothes, she suggested, or as part of roll-top electronic devices.

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More information: www.intel.com/content/www/us/e… ng-fair/winners.html

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EyeNStein
1.9 / 5 (12) May 20, 2013
Any figures for Farads per m3?
The 'insulator' is normally called a 'dielectric': It's permittivity determines how effective the capacitor is.
Still it's more accurate than most: Most of the web news sites seems to think she has built a new 20 second phone charger.
Telekinetic
1.5 / 5 (16) May 20, 2013
If I texted and spoke to my BFF for 18 hours a day, I, too, would have been motivated to invent the same thing.
tekram
5 / 5 (3) May 20, 2013
http://www.usc.ed...0912.pdf
"a novel core-shell nanorod electrode with hydrogenated TiO2 (H-TiO2) core and polyaniline shell. H-TiO2 acts as the double layer electrostatic core"
Results: Structural and electrochemical properties of the new electrode were evaluated. It demonstrated high capacitance of 203.3 mF/cm2 (238.5 F/g) compared to the next best alternative supercapacitor in previous research of 80 F/g, due to the design of the core-shell structure. This resulted in excellent energy density of 20.1 Wh/kg, comparable to batteries, while maintaining a high power density of 20540 W/kg. It also demonstrated a much higher cycle life compared to batteries, with a low 32.5% capacitance loss over 10,000 cycles at a high scan rate of 200 mV/s.
EyeNStein
2.1 / 5 (11) May 20, 2013
Only 20Wh/kg ? A good Lithium-ion achieves 200Wh/kg. So her smart phone will need re-charging several times a day.
However at a 20kW/kg power density remind me not to short one of these puppies out.
At 10,000 cycles its a better choice for the new £400 phones that don't have replaceable batteries.
Sophos
2.1 / 5 (11) May 20, 2013
WT .. she was 2nd place not co-winner - what since the winner is a white male we no longer care about his achievements ?
EyeNStein
2.4 / 5 (14) May 20, 2013
Gordon E. Moore Award winner only developed a viable self driving car system for $4k
Skepticus
1.8 / 5 (10) May 21, 2013
WT .. she was 2nd place not co-winner - what since the winner is a white male we no longer care about his achievements ?

The writer must be mightily pissed that a European won the first prize. It is such a shame that a site that focuses on facts and science gave us a piece of blatant propaganda old Soviet-style, and effing all about what the first prize is for?
DirtySquirties
1.6 / 5 (11) May 21, 2013
So, nothing on the winner? Or third place? I mean, if this is second place the winner must have done something pretty amazing.
DannyDeronda
1.4 / 5 (10) May 21, 2013
God, so much whining in the comments. A self-driving car, boo-hoo. A white male didn't get recognition, something that's ALWAYS happening in the world, right? Get over yourselves.
Skepticus
1.8 / 5 (10) May 21, 2013
This has nothing to do with external nor internal sex organs, nor the skin-deep colors. The article concentrate solely on the achievements of the first loser, while blithely avoiding what the first or the third winner have done to get their prizes. Is that asking too much from a report on an INTERNATIONAL Science and Engineering Fair, "the world's largest high school science research competition [with] more than 1,600 high schoolers from 70 countries, regions and territories ??? National pride is all well and good and should be encouraged, but this biased reporting only creating or reinforcing The Bad Loser Image in the minds of others citizens of the world. My last words are: I don't give a crap about who from which countries won, I want what all the winner did. Is that clear enough?

antialias_physorg
3.9 / 5 (7) May 21, 2013
National pride is all well and good and should be encouraged

Interesting point. (Sorry for going a bit off topic)
I actually think national pride should be DIScouraged - as (national) pride seems to be the leading source of conflict in the world ("WE are better than THEM so we get to tell them how to behave").

Pride is something that one should have in one's individual(!) achievements. Being born in one nation or another isn't an achievement but sheer luck. That others in that same nation do great stuff isn't due to oneself - so I see no reason to take pride in a nation for that reason, either.

Just being there (or even passively contributing by paying taxes or somesuch) isn't enough.
TomD
5 / 5 (3) May 21, 2013
Intel's page on the winners is here:
http://www.intel....ers.html
TheGhostofOtto1923
1.9 / 5 (11) May 21, 2013
Pride...individual(?) achievements
AA the rogue fails to acknowledge that humans are naturally team players. The whole is greater than the sum of it's parts.

The winners above would be quick to tell you that their accomplishments were the result of all the help they had, and would be eager to express their gratitude.

Nations exist to accomplish things which are absolutely impossible without them. They require a citizenry who shares an identity and are willing to sacrifice some comfort and freedom in support of it.

Family, community, nation... Tribe. I am sure you belong to one in some form or another. You a freemason perhaps?
antialias_physorg
3.9 / 5 (8) May 21, 2013
that humans are naturally team players

But if you didn't CONTRIBUTE to the success of the team - why should you then take pride in the team? Just being there/being born there - is that already a contribution? Do you get to be proud just for "being X" (white, christian, US citizen, arian, whatever)? If so then any alterantive to these is equally a source of pride - which renders the whole concept rather meaningless. It then degenerates just into self-aggrandisement (read: ego-masturbation) for no reason.

and would be eager to express their gratitude.

Agreed. What has this to do with pride?

I am sure you belong to one in some form or another.

Sure - but why would I AUTOMATICALLY be proud of that? For what reason? I love my family, and the community at large - but what has that got to do with pride?

TheGhostofOtto1923
2.2 / 5 (11) May 21, 2013
But if you didn't CONTRIBUTE to the success of the team - why should you then take pride in the team?
But in the case of nations you pay taxes and you benefit from the efforts of the team.
What has this to do with pride?
Their accomplishments could not have happened without their interaction with others.
Pride is something that one should have in one's individual(!) achievements
In this case a significant achievement was the product of not one person but many. Taking all the credit would have been conceit, especially for a youngster.
why would I AUTOMATICALLY be proud of that?
You contribute to the groups you belong to and thus share in their success or failure. It is the same with nations.
"WE are better than THEM so we get to tell them how to behave"
Why do you think this is what nations are for? Why dont you think that rogue nations like north korea shouldnt be forced to conform to the rule of law? And what entities could hope to do this but other nations??
antialias_physorg
3.3 / 5 (6) May 21, 2013
Why dont you think that rogue nations like north korea shouldnt be forced to conform to the rule of law?

Whose law? The one where we think OUR laws are better than THEIR laws (remember: "WE are better than THEM"?) Who is the final arbiter who is right and who is wrong? You? And why not one of them? See where the problem is?

But again: what does that have to do with pride? You didn't make the laws of your nation (nor do did you contribute to the policy or the moral values). Paying taxe isn't enough. That's no achievement (because if your country wouldn't ask you to pay taxes you wouldn't pay any - so you didn't actually DO anything - you merely refrained from not doing something) .

But if you think sitting in a chair in front of the TV is already a source of pride...well...
TheGhostofOtto1923
2 / 5 (10) May 21, 2013
Whose law? The one where we think OUR laws are better than THEIR laws (remember: "WE are better than THEM"?) Who is the final arbiter who is right and who is wrong?
Well for one the law which says that you are not allowed to have nuclear weapons because you have not demonstrated the proper maturity to keep them out of the hands of terrorists.
You?
No.
And why not one of them?
Let me think of another example... lets see... how about HITLER? He wanted to take lebensraum from its rightful occupants so his excess populations had a place to live. Just like the israelites. This was, by consensus, unlawful.
See where the problem is?
Yah. You are willfully myopic.

There are criminal forces in the world which seek to destroy civilization. There are benevolent forces in the world which will not allow them to do this. Which side are you on AA?
But if you think sitting in a chair in front of the TV is already a source of pride...well...
I dont have a tv.
TheGhostofOtto1923
2.1 / 5 (9) May 21, 2013
Whose law? The one where we think OUR laws are better than THEIR laws (remember: "WE are better than THEM"?) Who is the final arbiter who is right and who is wrong?
And for another one, the law which says that, just because your culture is designed to outgrow and overrun your neighbors (like pakistan), you oughtn't be allowed to do this.

There are many reasonable laws meant to restrict those who dont want to live within their means and respect the rights of others. This is true in families, communities, and nations.

And as the inhabitants of this world must of necessity begin living in earnest as a single tribe, scofflaws cannot and will not be tolerated, no matter what their god says.

They now have the potential to ruin what is still the only place we humans exist, and so it will NOT be allowed to happen.
antialias_physorg
4.2 / 5 (5) May 22, 2013
the law which says that, just because your culture is designed to outgrow and overrun your neighbors (like pakistan), you oughtn't be allowed to do this.

Are you referring to that law of wading into other countries, setting up 'nice' dictators and the like? I agree.
But I somehow get the notion that you have the other side in mind.

You may notice that cuirrently the only country that is waging wars of aggression is the one you're defending. So I#M gonna call 'hypocrit' on that one.

There are many reasonable laws meant to restrict those who dont want to live within their means and respect the rights of others.

Again - that sounds like harsh criticism of what the US is doing (militarily and economically ) in the world. Right?
no matter what their god says.
Ah. 'Our' god is so much better, isn't he.

They now have the potential to ruin what is still the only place we humans exist,

So we do it for them (via burning their fosil fuels)
TheGhostofOtto1923
1.9 / 5 (9) May 22, 2013
wars of aggression
You sure you're not frajo? Both you and he fail to grasp the concept of aggressive defense.

Israel has been attacking forces in Syria who have been trying to transfer weapons to Hezbollah in Lebanon. Why? Because it KNOWS those weapons will be used against it.

It doesn't have to wait for this to happen. Waiting could in fact be suicide.

NO COUNTRY that cares about it's survival will wait for an enemy to attack when IT is ready. If you want to win, YOU choose when and where and how a conflict will start.

But in fact the US has been attacked many times in recent years yes? And it knows full well that, because of their growth rates and the ideologies which drive them, this will only get worse.

Angriff ist die beste Verteidigung. This is not erudition but a quote from a wise German. Strike while the iron is hot. Read Sun Tsu on how to win a war.

Funny, only AGW will ultimately end these viral cultures. Is this why we've been burning their oil for 100 years?
TheGhostofOtto1923
2.2 / 5 (10) May 22, 2013
our god is so much better
Of course it is. It allows women to do other things besides making babies until it kills them. It allows meaningful restrictions to population growth such as contraception and abortion, which are the ONLY things which have kept the majority of the world at peace in a nuclear age.

Most importantly, our god is real. It is evidence-based and logically-derived. It favors THIS world over the next because it knows there IS no next world. It knows that the only immortality to be had will be from providing a secure and sustainable future for itself.

This is why all the other gods hate it so much.

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