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Research Promises Drastically Increased LiOn Capacity

Unknown Lamer posted more than 2 years ago | from the phones-that-last-more-than-five-minutes dept.

Power 378

daem0n1x writes "Could this be the breakthrough we've all been expecting that will finally make the electric car a reality? Researchers of Northwestern University USA discovered a new way to build lithium-ion batteries that changes dramatically both the charge time and capacity [original paper, paywalled]. Guess what it involves? That's right, graphene."

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The magical ingredient (5, Funny)

JDG1980 (2438906) | more than 2 years ago | (#38074536)

Graphene. Is there anything it can't do?

Re:The magical ingredient (5, Funny)

Crudely_Indecent (739699) | more than 2 years ago | (#38074608)

Yo mama!

Re:The magical ingredient (-1)

Anonymous Coward | more than 2 years ago | (#38074696)

Not true. I fucked his mom with my 12" long, 4" wide graphene penis. It was the first time she had ever felt anything during sex since his dad has a 3 inch pencil dick. Then I fucked his dad's ass, too.

Re:The magical ingredient (0)

P-niiice (1703362) | more than 2 years ago | (#38074868)

can graphene make pencils?

Re:The magical ingredient (-1)

Anonymous Coward | more than 2 years ago | (#38074704)

Yo mama[...]

puts the lead in MY pencil!

If it puts the lead in my pencil, I assume it does just fine on it's own.

Re:The magical ingredient (1)

Anonymous Coward | more than 2 years ago | (#38074660)

Carbon is the pixy dust of the universe.

Re:The magical ingredient (3, Insightful)

queequeg1 (180099) | more than 2 years ago | (#38074954)

Actually, bacon bits are the pixie dust of the universe. There isn't anything they can touch which isn't improved by a whole order of magnitude.

Re:The magical ingredient (3, Insightful)

marcosdumay (620877) | more than 2 years ago | (#38075000)

Guess what bacon is made of?

Re:The magical ingredient (5, Funny)

oakgrove (845019) | more than 2 years ago | (#38075126)

I just sprinkled bacon bits on a stack of hundred dollar bills. I am so excited!!

Re:The magical ingredient (-1)

Anonymous Coward | more than 2 years ago | (#38075214)

Even vaginas?

Re:The magical ingredient (5, Informative)

Halo1 (136547) | more than 2 years ago | (#38074702)

Actually, if you read the university press release, you'll see the magical ingredient is silicon. Current lithium-ion batteries already contain graphene sheets. What they did was

  • sandwich silicon between the graphene sheets, because silicon can bind many more ions than carbon (the downside is that it fragments, and that's what they addressed with their sandwiching process) -> more capacity
  • make minuscule holes in the graphene sheets to offer shortcuts to ions traveling from one side of the sheet to the other side (-> faster charging)

Re:The magical ingredient (1, Interesting)

TheLoneGundam (615596) | more than 2 years ago | (#38074904)

I believe "graphene" is single-molecule-thick silicon, isn't it?

Re:The magical ingredient (5, Informative)

timmy.cl (1102617) | more than 2 years ago | (#38074936)

"graphene" is single-atom-thick carbon.

Re:The magical ingredient (2, Insightful)

ultranova (717540) | more than 2 years ago | (#38075314)

I believe "graphene" is single-molecule-thick silicon, isn't it?

Graphene is a form of carbon usually found in pencils ("the lead"). It's single-atom-thick carbon sheets, basically.

Re:The magical ingredient (5, Insightful)

darksabre (250838) | more than 2 years ago | (#38075380)

Graphite is the form of carbon used in pencils. Anyway, my pencil is a lot more than a single atom thick ;-)

Re:The magical ingredient (1)

Anonymous Coward | more than 2 years ago | (#38074972)

Actually, if you read the university press release, you'll see the magical ingredient is silicon.

Yes, the University press release is really quite good for explaining the problem and the solution (although it has no information about how to get there - that is, I suppose, where the paywalled article comes in).

Now, Kung’s research team has combined two techniques to combat both these problems. First, to stabilize the silicon in order to maintain maximum charge capacity, they sandwiched clusters of silicon between the graphene sheets. This allowed for a greater number of lithium atoms in the electrode while utilizing the flexibility of graphene sheets to accommodate the volume changes of silicon during use.

“Now we almost have the best of both worlds,” Kung said. “We have much higher energy density because of the silicon, and the sandwiching reduces the capacity loss caused by the silicon expanding and contracting. Even if the silicon clusters break up, the silicon won’t be lost.”

Kung’s team also used a chemical oxidation process to create miniscule holes (10 to 20 nanometers) in the graphene sheets -- termed “in-plane defects” -- so the lithium ions would have a “shortcut” into the anode and be stored there by reaction with silicon. This reduced the time it takes the battery to recharge by up to 10 times.

Re:The magical ingredient (0)

Anonymous Coward | more than 2 years ago | (#38074962)

Can it be a dessert topping?
Can it be a floor wax?

Probably.

Re:The magical ingredient (1)

ackthpt (218170) | more than 2 years ago | (#38074992)

Graphene. Is there anything it can't do?

Make nano-Golems to do the work?

It's full of tiny treadmills!

Re:The magical ingredient (1)

ClintJCL (264898) | more than 2 years ago | (#38075250)

I thought it was Hagarian.

Re:The magical ingredient (5, Funny)

cellocgw (617879) | more than 2 years ago | (#38075264)

Yep, it can do anything. In fact Texas Instruments is using it in their next-gen calculators. You'll soon be able to buy a ....
.
.
.
wait....
Graphene Calculator!

With holographic storage and folding color display (2)

swb (14022) | more than 2 years ago | (#38074554)

I'm assuming that this technology will also come with the elusive holographic storage we've been hearing about, as well as those nearly disposable folding color displays as well.

Increased lion capacity! (5, Funny)

biodata (1981610) | more than 2 years ago | (#38074578)

Stay in the car!

Re:Increased lion capacity! (2)

Baloroth (2370816) | more than 2 years ago | (#38074830)

But it's the car that has the increased lion capacity in the first place!

Re:Increased lion capacity! (5, Funny)

delinear (991444) | more than 2 years ago | (#38075208)

Not only are they increasing the capacity, they're increasing the charge speed. That's all we need, millions of super fast lions :(

Beowulf for Slashdot the next generation (1)

Anonymous Coward | more than 2 years ago | (#38074612)

But will it work with graphene....?

Better battery life is always a year away (1)

BMOC (2478408) | more than 2 years ago | (#38074614)

New device with more overall wattage requirements is always a few months out.

Re:Better battery life is always a year away (1)

mmcuh (1088773) | more than 2 years ago | (#38074752)

That's OK, when the new batteries come I can use them in my old devices.

Re:Better battery life is always a year away (1)

holmstar (1388267) | more than 2 years ago | (#38075024)

Well at least this one is 3 to 5 years away rather than the 5 to 10 that is normally thrown about. Progress?

Re:Better battery life is always a year away (4, Funny)

delinear (991444) | more than 2 years ago | (#38075262)

Yes, we've progressed from not having invented it to having solved some interesting research problems. Next stage is cancelation [xkcd.com] .

Re:Better battery life is always a year away (1)

ultranova (717540) | more than 2 years ago | (#38075386)

Speaking of cancelation, whatever came of that Cold Fusion project Slashdot was reporting a month ago? Or regular hot fusion, for that matter?

Reality (-1, Troll)

Sarten-X (1102295) | more than 2 years ago | (#38074618)

Electric cars are already a reality. They're just expensive and inefficient.

Re:Reality (5, Insightful)

sgt scrub (869860) | more than 2 years ago | (#38074834)

Flying cars are already a reality. They are just expensive and inefficient.

Re:Reality (5, Insightful)

Baloroth (2370816) | more than 2 years ago | (#38074842)

Interstellar travel is already a reality. It is just expensive and inefficient.

Re:Reality (1)

GameboyRMH (1153867) | more than 2 years ago | (#38075004)

Hey they're practical. A Nissan Leaf or Mistubishi i-whateverthefuck (depending on region) would both suit my needs for daily transportation quite well. The Mitsu is even affordable.

Re:Reality (-1)

Anonymous Coward | more than 2 years ago | (#38075096)

Luckily, they have electric cars for those apartment-dwelling individuals with no power plugs near their parking spot... yay hybrid!

Go Cats! (0)

ElmoGonzo (627753) | more than 2 years ago | (#38074624)

So what if the football team isn't in the top 25.

Re:Go Cats! (1)

imgumbydamnit (730663) | more than 2 years ago | (#38075334)

That’s all right, that’s okay. You’re going to work for us someday. (Jangles car keys.)

Tesla lay-away (1)

Anonymous Coward | more than 2 years ago | (#38074632)

I can finally start saving to get my Tesla in 3-5 years!

Increased Lion capacity (4, Funny)

Xian97 (714198) | more than 2 years ago | (#38074634)

What if I am still running Snow Leopard?

Re:Increased Lion capacity (2, Insightful)

tepples (727027) | more than 2 years ago | (#38074650)

Then you'll probably have to buy a new Mac, given Apple's trend toward non-replaceable batteries.

Re:Increased Lion capacity (0)

Anonymous Coward | more than 2 years ago | (#38074686)

What if I am still running Snow Leopard?

Then you are a sinner in the stern, disapproving eyes of Saint Jobs, as ordained in iScripture. Duh.

Re:Increased Lion capacity (1)

Yvan256 (722131) | more than 2 years ago | (#38074746)

Lion doesn't have Rosetta, so I can't upgrade either because of one single application. I won't say which one but it's from a company which name starts with "Adob".

it's the manufacturing, stupid (1)

Anonymous Coward | more than 2 years ago | (#38074672)

New technology will not revolutionize the market - not unless it can be mass-produced at reasonable price.

There are countless energy technologies that are 'better' than what we have. But they meaning nothing to the economy and to consumers unless they come with a plan to manufacture them cheaply.

Re:it's the manufacturing, stupid (1)

catchblue22 (1004569) | more than 2 years ago | (#38074978)

New technology will not revolutionize the market - not unless it can be mass-produced at reasonable price.

There are countless energy technologies that are 'better' than what we have. But they meaning nothing to the economy and to consumers unless they come with a plan to manufacture them cheaply.

Yeah, or the patent could be bought by Exxon-Mobile or some other status quo company so they can sit on it or stifle its development. It has already done [wikipedia.org] .

Re:it's the manufacturing, stupid (1)

mikael (484) | more than 2 years ago | (#38075344)

They just want to make that when oil becomes unaffordable to the masses, they'll still have a revenue stream and rename themselves as "energy companies" rather than "oil companies".

Coming to the market in 5 years time? (4, Funny)

abigsmurf (919188) | more than 2 years ago | (#38074692)

Just in time for the cheap, ultra efficient solar panels that will be available then

whatever (0)

Anonymous Coward | more than 2 years ago | (#38074698)

I'm tired of hearing about new "breakthroughs". I dont wanna hear about it until its product on the shelf, that I can use, otherwise its just vaporware

Re:whatever (2)

elrous0 (869638) | more than 2 years ago | (#38075060)

If we had listened to Negative Nancys like you, we would never have gotten the flying car.

/. is an empty shell of what it once was. (-1)

Anonymous Coward | more than 2 years ago | (#38074710)

this fucking website is useless. everything posted here was on sites like msnbc half a week ago, without the ridiculous bias that comes with most postings on slashdot.

the new mods are fucking stillbirths. fix your shit.

Re:/. is an empty shell of what it once was. (-1, Troll)

JustAnotherIdiot (1980292) | more than 2 years ago | (#38074760)

I stopped coming on /. for news a long time ago, as did most people.
There's a reason the "news for nerds" sign was taken down.

Re:/. is an empty shell of what it once was. (5, Funny)

elrous0 (869638) | more than 2 years ago | (#38074788)

I don't even comment on /. anymore.

Re:/. is an empty shell of what it once was. (1)

Captain Splendid (673276) | more than 2 years ago | (#38074844)

Well, I don't even own a TV!

You have to be careful posting things like this (1, Troll)

BMOC (2478408) | more than 2 years ago | (#38074766)

If it violates the TOS of the website, it's now a crime. Sort of a "make your own rules" clause for corporations that lets them throw customers in jail. I wouldn't want to see /. throw anonymous coward in jail, so I feel a duty to inform you.

Re:You have to be careful posting things like this (1)

Captain Splendid (673276) | more than 2 years ago | (#38074912)

Please step away from the crack pipe.

Start the clock (0)

Anonymous Coward | more than 2 years ago | (#38074716)

Start the clock to an oil company purchasing the patent and locking it away ...

Better Place (5, Interesting)

Enderandrew (866215) | more than 2 years ago | (#38074720)

This is a must read article on the subject. Electric cars fail because batteries are too expensive, and because they required infrastructure of charging stations. This company however solves both these problems. You make an electric car without the battery, which is cheaper than a standard car and more reliable to boot. Then this company leases you a battery, which costs less per month than gas. And they handle the infrastructure, which includes stations that swap your battery out for a fully charged one. You never wait to charge your battery, and they can swap it out since you don't own it.

http://www.wired.com/cars/futuretransport/magazine/16-09/ff_agassi?currentPage=all [wired.com]

Part of this model is the assumption that battery technology still moves along rapidly. So the company can phase in newer, better batteries and you aren't tied to a battery you purchased when you bought your car.

Re:Better Place (1)

Yvan256 (722131) | more than 2 years ago | (#38074812)

I like the idea but it makes you dependent on them plus you need to live/work at driving distance of one of their station.

Re:Better Place (0)

Anonymous Coward | more than 2 years ago | (#38074874)

Kind of like how you have to live/work within driving distance of a gas station with your car that runs on gasoline....

Re:Better Place (0)

webheaded (997188) | more than 2 years ago | (#38074956)

Yeah except there are gas stations as far as the eye can see. Not quite the same for this. Quit being stupid.

Re:Better Place (0)

Anonymous Coward | more than 2 years ago | (#38074940)

Both of those dependencies can be replaced by competitors. There would just have to be enough of those cars out to trigger someone's greed.

Re:Better Place (3, Interesting)

Enderandrew (866215) | more than 2 years ago | (#38075034)

Last time I checked, this company was rolling out in select places like Denmark, Israel and Hawaii. It is easier to roll out initially in places with dense populations, and harder to roll out when the population is spread out. Once the model is proven to work, I expect it to spread.

Re:Better Place (1)

BenJury (977929) | more than 2 years ago | (#38075074)

Or they could bring the battery to you....

Re:Better Place (5, Interesting)

scamper_22 (1073470) | more than 2 years ago | (#38074820)

Managing that battery inventory is going to be a huge problem. How are you going to make sure each 'gas station' has enough batteries on hand. Since they're not cheap, it's a huge cost. This might not be a huge problem in the city, but that's not where people have a fear of running out of battery. Heck, a simple EV you charge at home would suffice if you simply traveled in the city.

It's the spaces in the cities or commuters.
The roll out and management of this is a huge problem.

But even assuming you could manage that well enough, there is another minor problem.

Maybe I'm just paranoid coming from Africa where people will steal anything making infrastructure hard to build out... but you're talking about an expensive batter than can be 'easily swapped out'. Something tells me that makes it 'easy to steal'.

Re:Better Place (2)

BenJury (977929) | more than 2 years ago | (#38075110)

I'm pretty sure you can replace everything you've just typed there with respects to a battery and use the word petrol.

Also presumably you'd only need a new battery when the life in the one you have is exhausted, or you need instant charge. Either way surly that's a easier logistical problem that ensuring the local forecourt has petrol?

Re:Better Place (1, Informative)

tepples (727027) | more than 2 years ago | (#38075202)

I'm pretty sure you can replace everything you've just typed there with respects to a battery and use the word petrol.

Please see webheaded's comment [slashdot.org] .

Re:Better Place (1)

Merk42 (1906718) | more than 2 years ago | (#38075152)

Managing that battery inventory is going to be a huge problem. How are you going to make sure each 'gas station' has enough batteries on hand.

Managing that gasoline inventory is going to be a huge problem. How are you going to make sure each 'gas station' has enough gasoline on hand.

Maybe I'm just paranoid coming from Africa where people will steal anything making infrastructure hard to build out... but you're talking about an expensive batter than can be 'easily swapped out'. Something tells me that makes it 'easy to steal'.

Maybe I'm just paranoid coming from Africa where people will steal anything making infrastructure hard to build out... but you're talking about a liquid that can be 'easily drained out'. Something tells me that makes it 'easy to steal'.

Re:Better Place (1)

Metabolife (961249) | more than 2 years ago | (#38075160)

Massive underground battery tubes my man.. Underground battery tubes.. yup.

Re:Better Place (0)

Anonymous Coward | more than 2 years ago | (#38075336)

Range anxiety.

Like it or not a major 'feature' of the car is to be able to get in and drive to California. The Volt is a "have it all" EV but it is also expensive and inefficient. If you kicked out ALL the government support the cost for each Volt would probably be north of 50K.

However, from a public policy perspective it makes a lot of sense to support EVs in dense cities. It also makes sense to support natural gas power plants to supply their power. The alternative is to have cities across the US continue to fail basic smog limits. That has a cost but it isn't accurately reflected in the cost of gasoline.

Re:Better Place (1)

Hentes (2461350) | more than 2 years ago | (#38074910)

There are other problems with electric cars such as limited range or that half of the car is occupied by the batteries.

Re:Better Place (4, Insightful)

GameboyRMH (1153867) | more than 2 years ago | (#38075116)

Battery swapping is going to look like a hilariously silly idea 5-10 years from now when an electric car can drive plenty far enough on a single charge. Heck even now you can buy quick-charging electric cars off the showroom floor that can reach an 80% charge in 30 minutes.

And to the guy about to post "Electric cars are a joke! I drive 900 miles every day you know!" well stick to your Ford Ranger with jerry cans in the back, but don't pretend that most people have any use for such range.

Re:Better Place (1)

arkane1234 (457605) | more than 2 years ago | (#38075378)

900 miles in a day... ouch... that's trucker distance...
900 miles / 60 mph = 15 hours... jesus.

Re:Better Place (1)

Endo13 (1000782) | more than 2 years ago | (#38075182)

You still need room to store and charge the batteries. One of today's batteries for pure EVs takes up far more space than 10-15 gallons of gasoline. Then you also need the machinery to swap them, because they're heavy. A facility the size of a standard gas station won't cut it.

We're far more likely to see this new battery tech in use in the next 15 years than this other guy's battery swap model.

Re:Better Place (1)

Enderandrew (866215) | more than 2 years ago | (#38075324)

Except I do believe the stations have been designed, and are currently being built. The first charging locations were installed in 2008, and last I heard they are supposed to roll out cars and finished battery swapping stations next year.

Re:Better Place (2)

Enderandrew (866215) | more than 2 years ago | (#38075352)

The first battery swapping station in Israel opened in March of 2011. It is already there.

Re:Better Place (1)

bananaquackmoo (1204116) | more than 2 years ago | (#38075224)

Does this post have any relevance to the article? This thread is about making lion batteries better. Lion batteries are used in more places than cars...

One year half-life? (1)

Dr. Spork (142693) | more than 2 years ago | (#38074872)

So if this battery has ten times the capacity of standard Lithium ion batteries, and after a year it's only five times more. That means its capacity falls off by 50% per year. I guess that would be fine for phones, but not so much for cars. It would be quite the environmental nightmare if car owners threw out their gigantic batteries every three years because the car had only 1/8 of the range it had when you drove it off the lot.

"Guess what it involves? (4, Funny)

circletimessquare (444983) | more than 2 years ago | (#38074886)

That's right, bacon."

More appealing answer.

Re:"Guess what it involves? (0)

Anonymous Coward | more than 2 years ago | (#38075052)

Don't be Si-Li-ion

The Singularity? (0)

TheLoneGundam (615596) | more than 2 years ago | (#38074922)

Perhaps the discovery of graphene will be viewed as the event which tipped us over into the Singularity [wikipedia.org] !

Where was this reasearch done? (1)

cvtan (752695) | more than 2 years ago | (#38074930)

How is this from Northwestern Univ. if all the author affiliations are Wuhan University?

Re:Where was this reasearch done? (1)

ahabswhale (1189519) | more than 2 years ago | (#38075178)

The author information for the research paper says , "Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois, 60208, USA"

How does that equate to Wuhan University?

New battery stories (5, Funny)

P-niiice (1703362) | more than 2 years ago | (#38074934)

If we could combine all the tech from all of the battery stories we've read in the past year, we could power an interstallar craft for a year with a single AAA battery and recharge it by rubbing it on a fluffy shirt for a few seconds.

Don't confuse Duration with Capacity (5, Informative)

DumbSwede (521261) | more than 2 years ago | (#38074958)

Having read the article (*gasp*) as well as a few others it seems these batteries do NOT hold 10x more power. They degrade 10x slower on on drain/recharge cycles and can be charged 10x faster. BUT this is not the same as having 10x more POWER per cycle. Gonna have to wait some more before you get an cheap electric car that can go 500 miles before charging (though charging 10x faster is nice).

Re:Don't confuse Duration with Capacity (1)

Rogerborg (306625) | more than 2 years ago | (#38075048)

Don't confuse power with energy. Oops, too late.

Re:Don't confuse Duration with Capacity (0)

Anonymous Coward | more than 2 years ago | (#38075108)

who's now confusing power with energy?

Re:Don't confuse Duration with Capacity (0)

Anonymous Coward | more than 2 years ago | (#38075132)

But if means to drive 500 miles I drive every 100 or so, charge 5 times and it takes only 5 minutes each time, that could work...

Re:Don't confuse Duration with Capacity (2)

The Askylist (2488908) | more than 2 years ago | (#38075252)

As I read it, they are claiming 10x the charge density as well. So we might finally get a Tesla that's good for more than a couple of laps of the Top Gear track...

Re:Don't confuse Duration with Capacity (5, Informative)

Dr_Barnowl (709838) | more than 2 years ago | (#38075332)

They do have more capacity - this isn't the traditional carbon electrode, this is a graphene-stabilised silicon anode, and silicon holds more charge.

They also have more power, as well as more capacity. If the internal resistance is low enough to charge it in 15 minutes, it's low enough to discharge it that fast as well.

Alas, the missing bit is similar innovations in cathode technology.

Re:Don't confuse Duration with Capacity (3, Informative)

kjhambrick (111698) | more than 2 years ago | (#38075356)

Not to mention that Gasoline or Diesel contains ooo 45 MJ/KG while a LIon Battery stores ooo 1 MJ/KG ... http://en.wikipedia.org/wiki/File:Energy_density.svg [wikipedia.org]

Seems we have a 'little' ways to go before LIon can replace good ole hydrocarbon fuels.

-- kjh

Not only cars and phones (1)

ericdujardin (623023) | more than 2 years ago | (#38075022)

If this technology reduces energy storage costs dramatically, renewable energies (solar, wind, etc) would become much more practical because they could be stored, ie, made available on demand instead of when Mother Nature provides them.

And when they finally hit the market... (5, Insightful)

Guspaz (556486) | more than 2 years ago | (#38075026)

... they'll fit right into the steady curve of slowly but steadily increasing battery capacity. People assume that all these battery advancements we keep hearing about never pan out. Well, some of them do, but once the researchers silly claims are brought down to be a bit more realistic, and after the years go by before they actually hit the market, they're just incremental improvements on what was available before they came out.

There's nothing wrong with that.

Re:And when they finally hit the market... (2)

sackvillian (1476885) | more than 2 years ago | (#38075312)

...but once the researchers silly claims are brought down to be a bit more realistic...

Make sure you distinguish between the claims that are made by the researchers and the claims that are made by human resources/technology transfer/publicity departments. Anyone who has ever seen that particular machine in action will attest to its ability to transform modest scientific claims into ones would make a late-night infomercial host blush.

Cars? (1)

J-1000 (869558) | more than 2 years ago | (#38075118)

The article only mentions how it will benefit small electronic gadgets. Is there any reason this might not benefit cars?

I am a regular /.er (0)

roman_mir (125474) | more than 2 years ago | (#38075148)

I am just a regular /.er, I don't RTFS, I normally even skip reading the summary. But you just have to push me into completely disregarding the words in the title at this point.

I am making a vague guess that this has something to do with increasing Lithium Ion battery capacity to store electricity, but really, somebody just 'promises' something?

I don't know. I promise to stop reading the titles of these stories too if they keep writing them this way. Hey, it never stopped me from posting!

Cost ? (2)

slb (72208) | more than 2 years ago | (#38075166)

Obviously missing data in TFA: estimated cost of production for these marvelous batteries ...

New Battery Tech! Another Dime in my Pocket! (0)

Wingsy (761354) | more than 2 years ago | (#38075190)

If I had a dime for every bulletin about some new battery technology, I'd be rich. And here we are today still plodding along with slow incremental bumps in battery capacities.

I'll believe this one too, as soon as I can go buy one. But I won't hold my breath.

Available in 3-5 years, naturally... (2)

divisionbyzero (300681) | more than 2 years ago | (#38075302)

In other words, they don't know if it will scale.

My Money's on Metal-Air Batteries (0)

Anonymous Coward | more than 2 years ago | (#38075370)

http://www.technologyreview.com/energy/23877/

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