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EVUKPaul
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re: Graphene batteries recharge in 10 minutes
EVUKPaul   1/13/2011 7:06:19 AM
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Take look at Yi Cui's 2010 research at: http://www.stanford.edu/group/cui_group/publications.htm#2010

EVUKPaul
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re: Graphene batteries recharge in 10 minutes
EVUKPaul   1/13/2011 7:03:48 AM
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Re graphene and lithium air Yi Cui at Stanford must surely be investigating this synergy ie. graphene / lithium air

Pistonslap
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re: Graphene batteries recharge in 10 minutes
Pistonslap   7/27/2010 9:27:17 AM
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Sorry people- this article was worthless. No technical information or cost information. The only thing it actually tells us is the size of Vorbeck's ego.

george.leopold
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re: Graphene batteries recharge in 10 minutes
george.leopold   7/16/2010 6:50:27 PM
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This from Friday's Washington Post on the key role played by battery technology in the Obama administration's energy strategy: http://www.washingtonpost.com/wp-dyn/content/article/2010/07/14/AR2010071406046.html

betajet
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re: Graphene batteries recharge in 10 minutes
betajet   7/16/2010 3:14:22 PM
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PWithington2: I would think that fast charge would be an option rather than a requirement. Most households would stick to recharging slowly overnight using conventional 100-240VAC to take advantage of off-peak electric rates, plus slow daytime charging using solar arrays. This takes care of 90% or more of driving needs. The fast charge capability allows drivers to charge quickly at an electric station if far from home. This eliminates the main problems many people have with electric cars: (1) that they'll be stuck far away from home with no way to get back, and (2) they won't be able to use an EV on a long trip.

PWithington2
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re: Graphene batteries recharge in 10 minutes
PWithington2   7/16/2010 11:52:16 AM
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What would be the impact on a household electrical system if it were possible to charge a car up in 1/10th the time? Wouldn't that mean 10X current flow? So would that mean that a house would have to purchase some sort of power storage system to be able to supply that current?

prabhakar_deosthali
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re: Graphene batteries recharge in 10 minutes
prabhakar_deosthali   7/16/2010 11:17:31 AM
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Such a reduction in the charging time will be a great boost in promoting EVs, as the battery recharge time will become comparable to time spent in filling gas. Currently the long battery charging time is the most deterring factor in EVs becoimg popular with a normal consumer

pixies
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re: Graphene batteries recharge in 10 minutes
pixies   7/16/2010 1:41:13 AM
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Graphene was first discovered in 2004. The speed technology moves from lab to product is breathtaking nowadays.

R_Colin_Johnson
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re: Graphene batteries recharge in 10 minutes
R_Colin_Johnson   7/15/2010 8:40:31 PM
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PNNL says the graphene-electrode technology is compatible with both traditional sealed lithium-ion batteries as well as the new "air" variety that take their oxygen in from the air like a fuel cell. Adding graphene electrodes to a lithium-air battery could enable larger capacity cells to nevertheless still charge very quickly. Does anybody know of other efforts to combine lithium-air batteries with graphene electrodes?

george.leopold
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re: Graphene batteries recharge in 10 minutes
george.leopold   7/15/2010 7:39:46 PM
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Battery technology is increasingly becoming a strategic area of energy research. It is significant that DOE and Princeton University are trying to move this technology from the lab to commercialization. Their industrial partner, Vorbeck Materials, is already featuring its graphene-based conductive ink on its Web site.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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