Nanowire Batt holds 10 times the charge of existing lithium

[knightmb]

Stanford researchers have found a way to use silicon nanowires to reinvent the rechargeable lithium-ion batteries that power laptops, iPods, video cameras, cell phones, and countless other devices.

Read the rest here:
http://news-service.stanford.edu/news/2008/january9/nanowire-010908.html

 

[Ypedal]

Now add to this high-discharge rates and cha-ching !!!!!! 8)

 

[ngocthach1130]

If it hold a lot of energy for small packages you could parallel huge amount of this together and increase the amperage. Might not need high discharge. Stuff don't last long when you abuse them anyway

 

[vanilla ice]

Sweeet.

 

[Doctorbass]

Just think about 1400Wh per kg!!!

A car need between 150 to 300Wh per km
Now with this posibble technology, they should be able to run let's say 6km per kilogram of battery! That's what we have now with our ebike!

100kg = 600km I feel that electric vehicule could gain in popularity with that!

That's pretty close to the fuel efficiency! 50liters per 600km...

Doc

 

[vanilla ice]

Yeah and all the article talks about is laptops of all things...

 

[kbarrett]

Yeah and all the article talks about is laptops of all things...

Don't complain. Laptops pay for these tasty new toys.

 

[ngocthach1130]

but then again most battery technology goes to consumer electronics because they drain at a stable rate. No high discharge, no abuse. Most laptop user won't subject their laptop to extreme cold weather or extreme heat (other than failed cooling system). So yeah easiest application is electronics and most it's probably most profitable too

 

[Beagle123]

Great article, Thanks

 

[tailwind]

Just think about 1400Wh per kg!!!

http://futuredrive.wordpress.com/2007/10/20/survey-of-usabc-contractor-lithium-ion-technology/

The United States Advanced Battery Consortium (USABC) has a long term energy storage goal of 200Wh/kg and 300Wh/litre for electric vehicles.

For comparison,
A123 are 108Wh/kg and ~220Wh/l

"It's not a small improvement," Cui said. "It's a revolutionary development."

Are we there yet? We might just be.

Greg

 

[OLIVIER]

Are we there yet? We might just be.

Greg[/quote]

Its not a destination, its a journey!
Discoveries in battery technology are garantied to happen. I dont see what could stop that, except pressure from the oil industry... One day I am sure we will even see electric airplane! The turning point will be when the energy density of batteries (or whatever) will be higher than kerozene.

 

[Lessss]

All I know is I'm Tired of waiting.
Give me nuclear batteres I say!

 

[Battboy]

Are we there yet? We might just be.

Greg

Its not a destination, its a journey!
Discoveries in battery technology are garantied to happen. I dont see what could stop that, except pressure from the oil industry... One day I am sure we will even see electric airplane! The turning point will be when the energy density of batteries (or whatever) will be higher than kerozene. [/quote]

It's coming soon - an electric airplane. We are working on one with another company now.

Don Harmon

 

[Doctorbass]

i'm sure they will exist too.

Can you just imagine that it will be less dangerous if they crash, no kerozene to burn, less people die, no explosion... wow

 

[albie]

how about no power???

 

[Link]

how about no power???

Wha...?

I do like the thought of 800Whrs in something the size of a DeWalt pack 8).

 

[SniperGaulois]

that is so naughty! Where do they get permission to write articles like that? surely a tenfold increase is enough to beat a F1 car on speed and distance, and it would make almost all commercial fuel cell research obsolete...it certainly would be nice!

 

[flip_normal]

A recent interview with Dr. Yi Cui.

http://www.gm-volt.com/2007/12/21/g...on-nanowire-lithium-ion-battery-breakthrough/

In the study you published, how many cycles did you run on your cells?

In the paper, we showed 10. If you read the supplementary, we also have the data in there up to 30. And in the lab right now we are testing more and more cycles. It looks like it’s going up and up and up.

For automotive applications, I’m told you typically need thousands of cycles so that the batteries can last 10 years.

Thats right. That’s exactly what we are targeting towards, over 1000 cycles. So since these nanowires are so small they have a way to hold against a big volume expansion, so we will see in the next several months perhaps a year these 1000 cycles, perhaps we can demonstrate that.

So your goal is to show 1000 cycles in as little a 6 months from now?

Yes.

 

[flip_normal]

From the same interview

What about the making of a nanowire?

It can be easily scaled up. I actually did some calculations, the production one could reach with say a factory 3 by 3 miles, you could produce enough batteries for at least 100,000 cars per day easily.

I really like the way this guy thinks!

 

[Link]

That would be a BIG factory .

 

[TylerDurden]

Yeah, clearly he's playing. He is (maybe) saying a typical plant could run enough product for 10,000 cars per day.

 

[Ypedal]

Question here would be :

How large a plant has to be to produce 100,000 cars per day !? Not considering the batteries.

 

[TylerDurden]

Factories making 100,000 cars/day are soon out of business, unless the cars only last a week.

 

[Lock]

http://www3.interscience.wiley.com/journal/122662143/abstract?CRETRY=1&SRETRY=0

Rapid Research Letter
Si nanowire arrays as anodes in Li ion batteries
H. Föll *, H. Hartz, E. Ossei-Wusu, J. Carstensen, O. Riemenschneider
Institute for Materials Science, Christian-Albrechts-University of Kiel, Kaiserstr. 2, 24143 Kiel, Germany
email: H. Föll (hf@tf.uni-kiel.de)
*Correspondence to H. Föll, Institute for Materials Science, Christian-Albrechts-University of Kiel, Kaiserstr. 2, 24143 Kiel, Germany

Keywords
81.05.Cy • 81.07.-b • 82.45.Vp • 82.47.-a • 82.47.Aa
Abstract
Si nanowires can incorporate large amounts of Li without fracturing and are thus prime candidates for anodes in Li ion batteries. Anodes made from Si nanowires offer a specific capacity per gram more then 10 times larger than the present graphite standard. It is shown how optimized Si nanowire arrays embedded in Cu can be produced in a relatively simple way employing macropore etching in Si followed by chemical etching and Cu galvanic deposition. First tests of these arrays in half-cells and batteries demonstrated a substantially increased capacity, small irreversible losses and cycle stability. In particular more than 60 charge/discharge cycles could be realized without loss of capacity. (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
--------------------------------------------------------------------------------
Received: 15 October 2009; Revised: 21 October 2009; Accepted: 21 October 2009
Digital Object Identifier (DOI)

10.1002/pssr.200903344 About DOI