Lithium-ion battery breakthrough for Aussie resea

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Stiive
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Lithium-ion battery breakthrough for Aussie resea

Post by Stiive » Thu, 23 May 2013, 21:59

Rgds,
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Richo
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Lithium-ion battery breakthrough for Aussie resea

Post by Richo » Fri, 24 May 2013, 00:15

Dodgy website wrote: 1860mAh/g (milli-Amp hours per gram), compared to 300 and 400 mAh/g for conventional graphite based anodes


So 10Ah battery would be 5.3g?
A 10Ah headway cell is ~350g

They say they were improving it 5 times not 50 times.
So something doesn't add up.
Is comparing anode to anode a useful measure of battery capacity?

My thoughts is the source needs to be tracked down for more accurate information.
So the short answer is NO but the long answer is YES.
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Stiive
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Lithium-ion battery breakthrough for Aussie resea

Post by Stiive » Fri, 24 May 2013, 00:29

Richo wrote:
Dodgy website wrote: 1860mAh/g (milli-Amp hours per gram), compared to 300 and 400 mAh/g for conventional graphite based anodes


So 10Ah battery would be 5.3g?
A 10Ah headway cell is ~350g

They say they were improving it 5 times not 50 times.
So something doesn't add up.
Is comparing anode to anode a useful measure of battery capacity?

My thoughts is the source needs to be tracked down for more accurate information.


Perhaps they are comparing theoretical energy values.
300mA/g = 100grams for 30AH cell for conventional anode!? - Never seen that sort of energy density for sale!


Disclaimer: I had this article sent to me and just skimmed it, and thought other people might be interested (mainly cus its Newcastle) regardless of its merit. I do not endorse the content, so please don't bash me personally for the content - BTW not aiming that at you Richo.
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Johny
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Lithium-ion battery breakthrough for Aussie resea

Post by Johny » Fri, 24 May 2013, 01:24

I managed to track down this document. It appears to be legitimate research but has likely been misquoted badly, or interpreted, by techno-journos.
If you want to read it, grab a copy.
If you are reading this post after 2013 the link is probably broken.
Catalytic Role of Ge in Highly Reversible GeO
2/Ge/C Nanocomposite Anode Material for Lithium Batteries

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Lithium-ion battery breakthrough for Aussie resea

Post by BigMouse » Fri, 24 May 2013, 02:19

This is happening at my university. I actually saw her speak on the subject a couple weeks ago. Very clever stuff they've come up with. She described one of the major problems with existing batteries is that the anode material swells and retracts with charging cycles, slowly breaking itself up. Apparently they've found a way to build conductive carbon structures around the anode particles to keep them in one piece.. or something like that. I'm not a chemist or a nano engineer.

Hopefully the talks will be posted online soon. She explained it better than I can.

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Richo
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Lithium-ion battery breakthrough for Aussie resea

Post by Richo » Fri, 24 May 2013, 20:54

Ok so they have done some tests which show promise although indicated that the improvement drops off after 50 cycles.
A button cell in a lab is far short of eV use.
The report is out of my scope so they could be comparing apples with party hats to get a 5x improvement so I can't agree or disagree with it.

Interesting none the less.
So the short answer is NO but the long answer is YES.
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Lithium-ion battery breakthrough for Aussie resea

Post by Canberra32 » Sat, 25 May 2013, 03:22

Like I keep saying EVs run on magic :)

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Lithium-ion battery breakthrough for Aussie resea

Post by E-STATION » Sat, 25 May 2013, 05:41

Great Stuff. Now we just need UOW to talk to the Ulsan National Institute of Science and Technology in Korea and we can get the range and charging time issues sorted.


http://ens-newswire.com/2012/08/22/new- ... -charging/

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Lithium-ion battery breakthrough for Aussie resea

Post by weber » Sun, 30 Jun 2013, 20:48

An old thread I know, but ...

One problem with this "breakthrough" may be that while copper, aluminium and lithium carbonate cost around $6, $2 and $5 per kilogram, germanium costs around $1000 per kilogram. And while annual lithium carbonate production is around 37,000 tons, annual germanium production is around 100 tons.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

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