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New Electrode Lets Batteries Charge In 10 Seconds

samzenpus posted more than 5 years ago | from the greased-electricity dept.

Power 348

Al writes "A new lithium-ion electrode allows batteries to be charged and discharged in 10 seconds flat. Developed by Gerbrand Ceder, a professor of materials science at MIT, it could be particularly useful where rapid power bursts are needed, such as for hybrid cars, but also for portable electronic devices. In testing, batteries incorporating the electrodes discharged in just 10 seconds. In comparison, the best high-power lithium-ion batteries today discharge in a minute and a half, and conventional lithium-ion batteries, such as those found in laptops, can take hours to discharge. The new high rate electrode, the researchers calculate, would allow a one-liter battery based on the material to deliver 25,000 watts, or enough power for about 20 vacuum cleaners."

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fast enough for a (-1, Offtopic)

mikerubin (449692) | more than 5 years ago | (#27159437)

first post ?

Re:fast enough for a (-1, Troll)

Anonymous Coward | more than 5 years ago | (#27159473)

I discharge in about 2 minutes when I'm barebacking tight asian pussy.

Re:fast enough for a (0)

Anonymous Coward | more than 5 years ago | (#27160069)

You just gave me an amazing hadron!
 
Now back to my calculations.

Re:fast enough for a (5, Interesting)

sgbett (739519) | more than 5 years ago | (#27159599)

first thought?

Railgun

Re:fast enough for a (5, Informative)

momerath2003 (606823) | more than 5 years ago | (#27159903)

You probably would want capacitors for those, with other pulse-shaping devices. In fact, this is what they actually do. Ten seconds of discharge is way too slow for a rail gun.

Re:fast enough for a (4, Funny)

sgbett (739519) | more than 5 years ago | (#27160135)

I thought of writing I disclaimer saying as much, but my submit button discharged too fast.

Re:fast enough for a (5, Funny)

rsborg (111459) | more than 5 years ago | (#27160171)

I thought of writing I disclaimer saying as much, but my submit button discharged too fast.

You know they have drugs for that. The blue pill and all.

Re:fast enough for a (1)

frieko (855745) | more than 5 years ago | (#27160039)

Pentium 4 -based laptop?

Re:fast enough for a (1)

sgbett (739519) | more than 5 years ago | (#27160177)

An interesting hypothesis! I wonder if they have done any preliminary testing as to the viabilty of getting past the POST\1

20 vacuum cleaners... (5, Funny)

Anonymous Coward | more than 5 years ago | (#27159441)

...how many libraries of congress per square inch is that, again?

Re:20 vacuum cleaners... (2, Informative)

Abreu (173023) | more than 5 years ago | (#27159703)

yeah, wtf with the strange units?

25,000 Watts (1)

Nefarious Wheel (628136) | more than 5 years ago | (#27159763)

Was that 25,000 Watt-seconds?

Re:25,000 Watts (2, Informative)

puetzk (98046) | more than 5 years ago | (#27160267)

No, watts are correct. The thing that's special about this battery isn't the capacity, it's the rapid charge/discharge.

Re:20 vacuum cleaners... (1)

cbiltcliffe (186293) | more than 5 years ago | (#27159811)

Regardless of the strange units, what the heck is the point of a battery can run 20 vacuum cleaners, for only 10 seconds?

What high drain device are you ever going to want to run for that short a time? If you can drain a high power LiIon in 90 seconds, what's the point of making it drain faster?

Unless you're wanting to us a battery to ignite a thermite charge, I don't see an application for this at all....

Re:20 vacuum cleaners... (5, Informative)

NeverVotedBush (1041088) | more than 5 years ago | (#27160063)

I don't think the ability to drain the battery in such a short time is the point. It's in delivering high current easily.

Lots of loads pull a lot of current initially or periodically. One example would be an electric motor since they talk about applications such as hybrids. The stall current is limited by the resistance of the windings but once it spins up, reverse voltage in the motor limits the current to much lower values. If it was a motor under a heavy load, the current could be much higher.

Another point is that in any high current circuit, the power wasted in the circuit as heat can be very high. It's current squared times resistance. With batteries that have a high internal resistance, that power heats the battery and is also power that's wasted. With a high current delivery capability, these would have very low internal resistance and under heavy loads, the batteries would run cooler and would be able to deliver more power to the actual load instead of throwing it away as heat.

This really is an accomplishment and a valuable one.

Just to illustrate battery self heating - if you ever get stranded in extreme cold because your battery doesn't have the power available to turn the engine over, just turn on the headlights for a while. It's a medium load but will heat the battery from the inside due to internal resistance and make the battery better able to start the car. This really works.

Re:20 vacuum cleaners... (1)

willy_me (212994) | more than 5 years ago | (#27160319)

Could these issues be solved with capacitors? They would be more efficient then batteries - regardless of any foreseeable improvements to battery tech. And with the development of super-capacitors, it would not take much of a capacitor to get the job done.

So I thing that charge time does have a big role to play in this announcement. Delivering high current easily is a problem that was solved a long time ago. But the problem of quickly and safely charging a battery is still very relevant.

Re:20 vacuum cleaners... (5, Informative)

Snowblindeye (1085701) | more than 5 years ago | (#27160119)

what the heck is the point of a battery can run 20 vacuum cleaners, for only 10 seconds?

But it also means that you can *charge* it in 10 seconds. How nice it that. One problem for plug-in electric cars is that they take long to charge. If charging it doesn't take longer than filling up a tank of gas, that would be a step forward.

Re:20 vacuum cleaners... (1)

NeverVotedBush (1041088) | more than 5 years ago | (#27160289)

Another good point!

Wired ran a story recently on the Tesla roadster and mentioned the time to fully charge the battery - it was some 37 hours.

They figure it wouldn't that big of an issue, though, since most will drive short distances and the charges will be partial charges that don't take nearly as long.

I think in practice, anyone who wants to do much driving in their Tesla is going to find that long charge time a bit frustrating.

Energy recovery (1)

MichaelSmith (789609) | more than 5 years ago | (#27160121)

Say you have a train or tram which draws power from the grid to accelerate then turns kinetic energy into heat to stop. If it can dump power into batteries fast it can save power overall.

Re:20 vacuum cleaners... (1)

Arcane_Rhino (769339) | more than 5 years ago | (#27160223)

I thought the same thing...

From the summary: "In comparison, the best high-power lithium-ion batteries today discharge in a minute and a half, and conventional lithium-ion batteries, such as those found in laptops, can take hours to discharge..."

Um, isn't that the point? In fact, isn't it a goal to have a "longer lasting" battery?

If a knowledgeable person can clarify why this is a BOO-YAA moment, I would really appreciate it. I read the article (I know, please don't hold it against me), and will concede that maybe the inclusion of lap-tops was poor writing because they are actually examples where this would not be useful technology but the article also mentions that it would be useful for quickly recharging cell phones. But, again, while it may be useful to have a quickly charging cellphone, a quickly discharging cell phone... not so much.

Re:20 vacuum cleaners... (1)

Blublu (647618) | more than 5 years ago | (#27160249)

Laser beams, dude. Frickin' laser beams!

Re:20 vacuum cleaners... (1)

Paua Fritter (448250) | more than 5 years ago | (#27160017)

25kW is about 33.5 horsepower; a bit over a million foot-pounds per minute. About a quarter of a furlong-cwt per hr, more or less.

Re:20 vacuum cleaners... (1)

johnny cashed (590023) | more than 5 years ago | (#27160241)

Can I get that in Hoover dams? I just can't comprehend the magnitude of this development.

20 vacuum cleaners for 10 seconds? (5, Funny)

DigitalReverend (901909) | more than 5 years ago | (#27159449)

That sucks.

1.6 Horsepower vacuum cleaners? (2, Informative)

billstewart (78916) | more than 5 years ago | (#27159643)

I'm fairly surprised to hear that vacuum cleaners use that much power - 1.25kw each is about 1.6 horsepower each. That should be enough for your vacuum cleaners to do 0-60 in the 10 seconds worth of battery you've got...

Re:1.6 Horsepower vacuum cleaners? (1)

pushing-robot (1037830) | more than 5 years ago | (#27159757)

I'm fairly surprised to hear that vacuum cleaners use that much power

Have you ever noticed the lights dim when you turn one on? Vacuum pumps, especially ones that have to suck air through a bag filled with dust and lint, are pretty power hungry.

Re:1.6 Horsepower vacuum cleaners? (1)

cbiltcliffe (186293) | more than 5 years ago | (#27159845)

But keep in mind, the first second is going to be startup, which, for an electric motor, can sometimes draw twice as much current as when it's running. That's going to skew your average significantly when you're only talking about a 10 second runtime.

Re:1.6 Horsepower vacuum cleaners? (2, Informative)

wooferhound (546132) | more than 5 years ago | (#27159895)

Vacuum cleaners are rated in "Amps" of power. you don't have a good vacuum unless it's rated at 10 amps or more. Of course this leads vacuum companies to design really inefficient motors that pull huge amounts of energy just to get the Amp Rating up high.

Re:1.6 Horsepower vacuum cleaners? (1)

Profane MuthaFucka (574406) | more than 5 years ago | (#27160273)

My shop vac is rated in gallons. And so is my girlfriend.

Re:20 vacuum cleaners for 10 seconds? (1)

CannonballHead (842625) | more than 5 years ago | (#27159687)

Most vacuums do.

Re:20 vacuum cleaners for 10 seconds? (1)

GaryOlson (737642) | more than 5 years ago | (#27159797)

Especially trying to find the right algorithm to use to suck the maximum the area during 10 seconds for 20 instances. Would that be a blow-by-blow algorithm?

Re:20 vacuum cleaners for 10 seconds? (1)

wooferhound (546132) | more than 5 years ago | (#27159921)

But remember . . .
you can recharge it back up to full again in 10 more seconds.

Re:20 vacuum cleaners for 10 seconds? (1)

GrahamCox (741991) | more than 5 years ago | (#27159837)

That sucks

But not for long.

Re:20 vacuum cleaners for 10 seconds? (2, Insightful)

MobileTatsu-NJG (946591) | more than 5 years ago | (#27160247)

20 vacuum cleaners for 10 seconds?

That sucks.

How many yomamas is that?

Are those African vacuums, or European vacuums? (0)

Anonymous Coward | more than 5 years ago | (#27160291)

"no no, it can grip it by the husk"

Portable Nuclear Device... (3, Funny)

icebike (68054) | more than 5 years ago | (#27159455)

> deliver 25,000 watts, or enough power for about 20 vacuum cleaners."

What could possibly go wrong with that!!??

Re:Portable Nuclear Device... (1)

FooAtWFU (699187) | more than 5 years ago | (#27159513)

The image of terrorists attacking a civic building with 20 vacuum cleaners is a funny one.

Especially if it's 20 vacuum cleaners each.

Re:Portable Nuclear Device... (1)

Rinisari (521266) | more than 5 years ago | (#27159575)

That's quite an EMP.

Re:Portable Nuclear Device... (2, Funny)

tecnico.hitos (1490201) | more than 5 years ago | (#27159557)

> deliver 25,000 watts, or enough power for about 20 vacuum cleaners."

What could possibly go wrong with that!!??

We could be attacked by an army of rebel housewives.

Couldn't be any more shocking than GM's (2, Interesting)

mkcmkc (197982) | more than 5 years ago | (#27159909)

new electric bass boat, the Chevy Fibrillator ...

Re:Portable Nuclear Device... (2, Interesting)

NeverVotedBush (1041088) | more than 5 years ago | (#27159917)

A lot for people who don't treat them with the proper respect.

That kind of short circuit current would probably amputate fingers if someone shorted one with a ring, melt metal in seconds (or less), and depending on the circuit, could possibly create enough of a magnetic field to launch that molten metal across a room (think rail guns).

High fault currents can lead to a whole range of bizarre effects. People will need to take off jewelry and should wear gloves and safety glasses when handling them. Also, that kind of fault current and molten or very very hot metal and arcs would probably be a fair fire hazard. Some sort of overcurrent protection will pretty much be mandatory.

But comparing it to a portable nuclear device is a pretty good, if extreme, analogy. One thing about such a high current capability is that less energy will be wasted as heat in the battery itself since its internal resistance must be so low.

Good for cars? (5, Funny)

NaCh0 (6124) | more than 5 years ago | (#27159495)

Great, by the time I have backed out of the driveway I'll need to recharge it.

Think about it (5, Interesting)

jeffmeden (135043) | more than 5 years ago | (#27159759)

Actually, the big thing about electric driving isn't getting started in the first place, it's reclaiming the energy when you have to stop (at least for inner city driving.) If you have a battery that is bordering on a supercapacitor to dump energy into, you can reclaim nearly all of the stopping energy into the battery to use to start again. Given that there are 745 watts/hp, a battery capable of a charge rate of 25KW gives you 33 horsepower of braking capacity with one cell. Get 3 of them in a car and you can reclaim 100hp during a stop, which would be good for all but the most grueling emergency stops (depending on the weight of the car).

Re:Good for cars? (1)

cbiltcliffe (186293) | more than 5 years ago | (#27159865)

It would be good for a 1/4 mile drag racer, but you'd have to push it back to the starting line....

Re:Good for cars? (1)

SoupIsGoodFood_42 (521389) | more than 5 years ago | (#27160261)

I suggest you read some basic physics. You can burn your entire fuel tank in 10 seconds too, if you wanted to.

That would suck (3, Funny)

Anonymous Coward | more than 5 years ago | (#27159505)

for about 10 sec.

charging (1)

yincrash (854885) | more than 5 years ago | (#27159507)

being able to charge in 10 seconds would mean you could fuel an electric car as fast as a gasoline one. i hope this is for real

Re:charging (5, Informative)

yincrash (854885) | more than 5 years ago | (#27159537)

after reading the article, fast charging has not been developed. the article writer only says that it may be possible, w/o citing any source regarding that claim.

Re:charging (5, Funny)

Repton (60818) | more than 5 years ago | (#27159949)

All you need is a wall socket that can deliver 25,000W!

Note to self: pick up some 100A fuses on the way home.

Re:charging (1)

MichaelSmith (789609) | more than 5 years ago | (#27160163)

All you need is a wall socket that can deliver 25,000W!

Note to self: pick up some 100A fuses on the way home.

Have a big battery in the house as a cache. Good for backups as well.

Re:charging (1)

hedwards (940851) | more than 5 years ago | (#27160131)

It sounds to me like a variant on capacitors, but the question as you put it is, has this really been achieved, or is this still vaporware. People have been working on this for quite a while, and nobody's been able to do it. I'm sure they will some day, but right now there needs to be a proper citation.

And for a car, it would likely take a huge number of cells and a huge amount of juice to work.

Re:charging (1)

icebike (68054) | more than 5 years ago | (#27159547)

Sure, as long as you can find a 25000 watt outlet.

Re:charging (1)

yincrash (854885) | more than 5 years ago | (#27159565)

just have a very bank of batteries at the gas station underground that can discharge that fast into the car, and the bank can be charged at reasonable amperages from the power line. sort of like gas stations are made today, but with batteries instead of tanks.

Re:charging (0)

Anonymous Coward | more than 5 years ago | (#27159683)

I accidentally a very bank of batteries.

Re:charging (4, Informative)

AnotherBlackHat (265897) | more than 5 years ago | (#27159673)

>Sure, as long as you can find a 25000 watt outlet.

I don't think so...

Typical Miles per kilowatt hour is 4.
A 100 mile fill-up = 25 kilowatt hours = 90,000,000 watt seconds.
If you want that in 10 seconds, you'd need a 9 Megawatt outlet.

Re:charging (1)

Wizard Drongo (712526) | more than 5 years ago | (#27159851)

Maybe we could fuel it with lightning or something till someone makes a Mr. Fusion......

Re:charging (1)

cbiltcliffe (186293) | more than 5 years ago | (#27159883)

Political slogan from the next election:

A car in every driveway.... A chicken in every pot.... A Mr. Fusion for every gas station...

Re:charging (1)

hedwards (940851) | more than 5 years ago | (#27160187)

You are right, well mostly. This cell supposedly charges in 10 seconds, but I doubt that they'd hook it up in such a way that you needed a 9 megawatt outlet. More likely they'd design for a 4 hour charge, which would be a much more reasonable figure.

For most people, they'd probably set it up so that you only had to charge it for an hour and were limited to only 25 miles, which would be fine for most people, especially since they'd have the ability to leave it charge all night and get the full range.

Or even still more likely the author threw that in to make it look more useful than it really is. Useful for handhelds and things with lesser power needs, probably, but not for high drain devices like cars.

Ka-ching. (1)

senorpoco (1396603) | more than 5 years ago | (#27159515)

fantastic, now they can start putting Ipod charging stations in airports.

Re:Ka-ching. (3, Insightful)

oodaloop (1229816) | more than 5 years ago | (#27159719)

Because quickly charging our iPods is the biggest problem we face in this growing energy crisis.

Re:Ka-ching. (1)

evolx10 (679412) | more than 5 years ago | (#27159905)

Because quickly charging our iPods is the biggest problem we face in this growing energy crisis.

No charging my shitty replacement for a gas powered mower is.

Re:Ka-ching. (1)

iminplaya (723125) | more than 5 years ago | (#27160067)

Well, yeah... Now that oil is below 43 dollars a barrel. I don't know why all the doom 'n gloom these days.

Power (0)

Anonymous Coward | more than 5 years ago | (#27159527)

deliver 25,000 watts, or enough power for about 20 vacuum cleaners.

So 1 vacuum cleaner consumes 1.25kW? I didn't realise they were so power hungry. Anyway, a more important number is the capacity, how many Wh (or mAh) do these things hold? Is it 25kW for 10s? or for 1 hour? or what?

Re:Power (1)

jcr (53032) | more than 5 years ago | (#27159593)

It's a bit disappointing that an MIT publication wouldn't bother to get meaningful figures, isn't it? I presume they mean that the battery can deliver 25KW for ten seconds, since they're touting the fast discharge cycle.

-jcr

Re:Power (1)

NeverVotedBush (1041088) | more than 5 years ago | (#27160239)

I don't think the capacity is really an issue. Capacity is just the amount of reactants in the battery. More reactants means more capacity.

The current delivery capability is going to be related to the electrode area, reactant and ion mobilities, and the distance the electrodes are separated.

All they need to do to increase capacity is upsize the battery which will probably also increase current delivery capability.

Re:Power (1)

Chris Burke (6130) | more than 5 years ago | (#27159679)

This doesn't affect the energy capacity of the battery at all, only the rate it can charge or discharge. It's a new electrode, not a new electrolyte.

So obviously the battery wouldn't be able to power the vacuum cleaners for terribly long. I don't know how much energy is in a 1L LiIon battery, and am too lazy to look it up. But it would drain your laptop battery in a couple seconds or less.

Re:Power (1)

cbiltcliffe (186293) | more than 5 years ago | (#27159931)

120 Volt * 10 Amp = 1.2 kW.

A 10 amp motor is quite reasonable for a vacuum. Consider those hot-air hand dryers have 2 amp motors at 240V, which is equivalent to 4 amp @ 120 V. And the fan in those is a lot lower power than a vacuum cleaner....

Re:Power (0)

Anonymous Coward | more than 5 years ago | (#27159995)

Umm... the power calculations are more COMPLEX than just P=V*I. You can use it for DC but it's not quite the same for AC.

Re:Power (1)

cbiltcliffe (186293) | more than 5 years ago | (#27160227)

These are batteries we're talking about. It is DC.

But assuming the vacuums are using AC, and it's a miserable hack of journalistic inaccuracy, it's only 60 Hz. A frequency that low doesn't make that much difference to power calculations.
If it was a few kHz, I'd agree with you.

usage asymmetry (1)

rlseaman (1420667) | more than 5 years ago | (#27159563)

There can't be a huge lot of commercial use cases for rapid discharge. Tasers?

Rapid charge, on the other hand, makes a lot of applications much easier to market. Gasoline has one big advantage over electric powered cars - you can drive into and out of a gas station in 3 minutes as opposed to having to plug the car in overnight.

Cyclon spiral lead-acid cells are almost this good (1)

localroger (258128) | more than 5 years ago | (#27159569)

The cyclon X cells I used to power a robot I built a few years back can deliver 500 amps -- enough to melt a 10 gauge wire I accidentally dropped across the terminals. Not bad for something about four times the heft of a D cell. The claim sounds like hype, since it's energy density, not discharge rate that everyone is trying to ramp up lately.

Re:Cyclon spiral lead-acid cells are almost this g (1)

sgbett (739519) | more than 5 years ago | (#27159625)

accidentally?

riiiiight.

Re:Cyclon spiral lead-acid cells are almost this g (1)

Icarus1919 (802533) | more than 5 years ago | (#27159919)

And Cylon cells? Hoo boy.

Liion DIES when heated too much (0)

Anonymous Coward | more than 5 years ago | (#27159579)

discharging or charging that battery in 10 seconds creates a CRAPLOAD of heat. This will shorten it's lifespan drastically.

They fixed that yet?

Re:Liion DIES when heated too much (1)

cbiltcliffe (186293) | more than 5 years ago | (#27159951)

Yeah. They use the rapid discharge capability to run a refrigeration system to keep the battery cool.

Boom!!! (4, Funny)

owlnation (858981) | more than 5 years ago | (#27159621)

Where does the heat go on rapid discharge?

Or is this the Sony method of rapid discharge?

Re:Boom!!! (1)

EkriirkE (1075937) | more than 5 years ago | (#27159753)

I came here to post this. Isn't a big problem with LiIon heat=explosion? With power dissipation like that, I'd imagine massive heat...

Re:Boom!!! (2, Interesting)

LehiNephi (695428) | more than 5 years ago | (#27159923)

The 25kW is power delivered by the battery to a load, not power dissipated by the battery. Granted, given the amount of current involved and the inherent internal resistance of the battery, there'll be a fair amount of power dissipated in the battery itself, but it would be a fairly small percentage of the 25kW

Re:Boom!!! (0)

Anonymous Coward | more than 5 years ago | (#27160233)

The 25kW is power delivered by the battery to a load, not power dissipated by the battery. Granted, given the amount of current involved and the inherent internal resistance of the battery, there'll be a fair amount of power dissipated in the battery itself, but it would be a fairly small percentage of the 25kW

Yeah, what is that power transferred to when the battery is shorted out?

Re:Boom!!! (1)

SoupIsGoodFood_42 (521389) | more than 5 years ago | (#27160305)

I would imagine the very reason it can be discharged so fast is exactly because it has less heat problems (due to less internal resistance).

Power != Energy (0)

Anonymous Coward | more than 5 years ago | (#27159631)

The new high rate electrode, the researchers calculate, would allow a one-liter battery based on the material to deliver 25,000 watts, or enough power for about 20 vacuum cleaners."

For how many microseconds, I wonder. I don't doubt the new electrodes might have some use. But what is holding up wide spread adoption of battery cars is not just the charging time. It is also the total energy that can be stored in a battery relative to its weight. That is the tough nut to crack.

c'mon, boys (5, Funny)

Anonymous Coward | more than 5 years ago | (#27159639)

a page of comments and no one has yet said:

"10 seconds? the average /. geek discharges faster than that"

sigh.

Re:c'mon, boys (4, Funny)

cbiltcliffe (186293) | more than 5 years ago | (#27160013)

That's because in order to prove the conclusion, they'd have to have done the experiment......

Re:c'mon, boys (0)

Anonymous Coward | more than 5 years ago | (#27160253)

there's plenty of porn for that part, the tough part is finding the one scientist who has a free hand...

Units. (0)

Anonymous Coward | more than 5 years ago | (#27159645)

Twenty vacuum cleaners? How much is that in burning Libraries of Congress?

Re:Units. (1)

evolx10 (679412) | more than 5 years ago | (#27159973)

Twenty vacuum cleaners? How much is that in burning Libraries of Congress?

Im not sure, but my car is a bathroom and a half long and its 1200 living rooms to work.

but how many "libraries of congress" is that? (0)

Anonymous Coward | more than 5 years ago | (#27159655)

Seriously, what is with "vacuum cleaners" as a unit of comparative measurement? Running for how long? Cleaning a carpet how dirty? Upright or canister? With motorized attachments or no?

Re:but how many "libraries of congress" is that? (1)

evolx10 (679412) | more than 5 years ago | (#27160071)

Well we all know "elephant" has been in use for weighing huge objects , especially dinosaurs and airplanes. It was only a small step to measure wattage with vacuum cleaners. It goes Elephant, Vacuum cleaner, cobra, inch, sesame seed.

This article is mis-quoted (2, Informative)

junglebeast (1497399) | more than 5 years ago | (#27159715)

The article describes a new technology for speedy discharge of batteries which is not the same as charging

Picture of one (1)

noidentity (188756) | more than 5 years ago | (#27159727)

Wikipedia has a picture of one [wikipedia.org] . These can even charge and discharge in less than a second.

Armageddon (5, Funny)

GottliebPins (1113707) | more than 5 years ago | (#27159755)

Wow, now we can expect to see spectacular laptop fires hot enough to burn through an engine block. Where can I get some of those batteries? Sony?

Improved Lithium-Ion Battery Charges in Seconds (1, Informative)

Anonymous Coward | more than 5 years ago | (#27159781)

Because of the electronic punch that they pack, gram for gram, lithium-ion batteries are the most common rechargeable batteries found in consumer electronics, such as laptops. However, they take a long time to charge and researchers have assumed until now that there was a speed limit on the lithium ions and electrons that pass through the batteries to form an electrochemical circuit. The problem with existing lithium-ion batteries is the way ions passed through minuscule tunnels [bbc.co.uk] , whose entrances are present at the surface of the material. The team discovered that to get into these channels, the ions had to be positioned directly in front of the tunnel entrances - if they were not, they could not get through. The solution found by Gerbrand Ceder at the Massachusetts Institute of Technology was to engineer the material such that it has a so-called "beltway" that guides the ions towards the tunnel entrances. A small cellphone battery can be recharged in just 10 seconds [google.com] thanks to the improved ion flow and a large battery that would be used to power a plug-in hybrid electric car could be recharged in just five minutes, compared to up to six or eight hours at present. Because there are relatively few changes to the standard manufacturing process, Ceder believes the new battery material could make it to market within two to three years.

Where's my belt onion? (1, Redundant)

rossz (67331) | more than 5 years ago | (#27159813)

Back in my day we called those "capacitors".

Now get off my lawn!

My laptop was better (4, Funny)

Alain Williams (2972) | more than 5 years ago | (#27159857)

My last laptop battery was faster than this after a few years, it would completely discharge in 5 seconds, not a slow 10 seconds!

Units (0)

Anonymous Coward | more than 5 years ago | (#27159943)

Whats that in Libraries of Congress (LoC)?

Excessive Discharge (1)

altek (119814) | more than 5 years ago | (#27160015)

"In testing, batteries incorporating the electrodes discharged in just 10 seconds."

Sweet, now my laptop will get up to a full 10 seconds of use until I have to recharge!

Just what I need (0)

Anonymous Coward | more than 5 years ago | (#27160065)

A battery that lasts on 10 seconds ;-)

As usual, bad summary (0)

Anonymous Coward | more than 5 years ago | (#27160075)

From many of the comments, most as usual didn't rtfa. It explains most of what people commented on anyways so I'll just make a summary.

This breakthrough, as implied, is for high discharges which is useful as a replacement for ultracapacitors or possibly power tools (and weapons?) which requires high short term power. It isn't a major breakthrough but it is still nice. It has a lower capacity than normal and there is a possibility of fast charging but more research is needed. The reference to cars was more of a future possibly than a target.

Star Trek inches closer (4, Funny)

Mr Z (6791) | more than 5 years ago | (#27160175)

Anyone else notice this from the article?

To improve the batteries, the researchers modified an electrode material called lithium iron phosphate . . . The models suggested a way to improve conductivity by directing lithium ions toward particular faces of crystals within the material.

To exploit this, Ceder included extra lithium and phosphorus. This helps form a layer of lithium diphosphate, a material known for its high lithium-ion conductivity.

Wouldn't it be something if someone trademarks this use of lithium diphosphate on targeted crystal faces as, oh, I dunno, dilithium crystals?

First, transparent aluminum, [wikipedia.org] and now this!

Can you feel it? (1)

Abuzar (732558) | more than 5 years ago | (#27160183)

Yes. More Power! Yes, Yes, Yes!
Can You Feel It? Can You Feel The Power Yet?
My Plan Is Working Perfectly.
Soon, Very Soon, I Will Have All The Power I Need To Take Over Slashdot... and then... THE WORLD!!

Ha ha!
Ha ha haha ha!

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