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New Electrode Lets Batteries Charge In 10 Seconds
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."
...how many libraries of congress per square inch is that, again?
That sucks.
I read Slashdot for the headlines, because the headlines, unlike the articles, are usually original and never duplicated
> deliver 25,000 watts, or enough power for about 20 vacuum cleaners."
What could possibly go wrong with that!!??
Sig Battery depleted. Reverting to safe mode.
Great, by the time I have backed out of the driveway I'll need to recharge it.
for about 10 sec.
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.
first thought?
Railgun
Invaders must die
Where does the heat go on rapid discharge?
Or is this the Sony method of rapid discharge?
a page of comments and no one has yet said:
"10 seconds? the average /. geek discharges faster than that"
sigh.
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...
Bill Stewart
New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
>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.
The article describes a new technology for speedy discharge of batteries which is not the same as charging
Because quickly charging our iPods is the biggest problem we face in this growing energy crisis.
Tic-Tac-Toe, Global Thermonuclear War, and relationships all have the same winning move.
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?
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).
My last laptop battery was faster than this after a few years, it would completely discharge in 5 seconds, not a slow 10 seconds!
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.
We are Dead Stars looking back Up at the Sky
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.
I had but a simple dream, to destroy all humans.
new electric bass boat, the Chevy Fibrillator ...
"Not an actor, but he plays one on TV."
All you need is a wall socket that can deliver 25,000W!
Note to self: pick up some 100A fuses on the way home.
Repton.
They say that only an experienced wizard can do the tengu shuffle.
I thought of writing I disclaimer saying as much, but my submit button discharged too fast.
Invaders must die
You know they have drugs for that. The blue pill and all.
Make sure everyone's vote counts: Verified Voting
Anyone else notice this from the article?
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, and now this!
Program Intellivision!
No, watts are correct. The thing that's special about this battery isn't the capacity, it's the rapid charge/discharge.
The Matrix is going down for reboot now! Stopping reality: OK. The system is halted.
I prefer to see how deep the rabbit hole goes!
Invaders must die
So it sounds like fast charging has been developed, and it's just a matter of taking orders and tooling the factories at this point.
Critical hit! It's super effective! END USER fainted!
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but for a man-portable railgun, the batteries are used to charge the capacitors, all in the back pack.
You should think more along the lines of a Beowulf Cluster of Roombas.
This issue is a bit more complicated than you think.
I suspect dilithium came from a hint dropped in somebody's ear that regular old lithium was a critical component of hydrogen bombs. But just as regular old triticale, a grain that actually exists, wasn't good enough for Star Trek and so had to be supervened by quadrotriticale in The Trouble with Tribbles, the critical element lithium without which hydrogen bombs couldn't be made probably had to be expanded to dilithium to meet the demands of starship engines. (It's never occurred to me before now but I guess if they ever had to do it again it would have been octo-something.)
Brackets contain world's first nanosig, highly magnified:[.]
It's only like capacitors in that the discharge is fast. This is still a chemical cell, unlike capacitors which store energy in electric fields. Chemical batteries still have faaaar higher energy density (Wh per kg) than capacitors.
In the fuse draw of a local college electronics lab I found a length of 6inch nail lovingly cut to length with cleaned ends, painted round the middle with the designation "10000A, slow-blow" (Apparently one of the techs had a dead scope that couldn't be powered up - it just blew the fuse. Hence the nail. Bung it in and now you know where the hard short *was*. It's the melted patch with the smoke coming out...)
Red to red, black to black. Switch it on, but stand well back.
FTA:
"Ultimately, the energy capacity of lithium iron phosphate is lower than that of other lithium-ion battery materials, making Ceder's advance of limited value, says Jeff Dahn, a professor of physics at Dalhousie University, in Halifax, Nova Scotia. This battery is good for acceleration, but not as much for long range."
Emphasis mine. As has been pointed out above, the practical use for rapid-discharge is in conjunction with other types of high-density storage. I envision it as analogous to the RAM and HDD paradigm.
so thats what the kids call it these days
Actually what about the reverse?
Lightning rod -> capacitors -> fast-charge Li-ion == 1.21 Jigawatts!!
The Empire State Building no doubt gets hit with enough Lightning to go off the grid...
War as we knew it was obsolete
Nothing could beat complete denial
- Emily Haines
Apparently, the "Bunny Trail" is a symbolic representation of one's latent homosexual desires. It's quite an interesting read!
Is there a moderation for +1 Too Much Informative?
I've never heard of a 10A circuit or receptacle. Many outlets in the US are supplied via a 20A branch circuit using #12 copper, but are wired with 15A receptacles. This is legal according to the NEC code. The remainder are supplied via a 15A branch circuit using #14 copper. The 15A receptacles have the typical 'I I' look to them. 20A receptacles look more like 'I- I' where the neutral blade has a Tee shape. A 20A plug has the neutral lead rotated 90 degrees, so it'll fit in a 20A receptacle but not a 15A one. Similarly, a 15A plug will mate with a 20A receptacle. This chart shows various NEMA plug and receptacle configurations.
Tiller's Rule: Never use a word in written form that you've only heard and never read. You will end up looking foolish.