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Graphene

Graphene in the newz again...

"A metal that behaves like water"
http://phys.org/news/2016-02-metal.html

ametalthatbe.jpg


[youtube]lvi3nG2Mwsw[/youtube]

The team created an ultra-clean sample by sandwiching the one-atom thick graphene sheet between tens of layers of an electrically insulating perfect transparent crystal with a similar atomic structure of graphene.

"If you have a material that's one atom thick, it's going to be really affected by its environment," said Jesse Crossno, a graduate student in the Kim Lab and first author of the paper. "If the graphene is on top of something that's rough and disordered, it's going to interfere with how the electrons move. It's really important to create graphene with no interference from its environment."

The technique was developed by Kim and his collaborators at Columbia University before he moved to Harvard in 2014 and now have been perfected in his lab at SEAS.

Next, the team set up a kind of thermal soup of positively charged and negatively charged particles on the surface of the graphene, and observed how those particles flowed as thermal and electric currents.

What they observed flew in the face of everything they knew about metals.

When the strongly interacting particles in graphene were driven by an electric field, they behaved not like individual particles but like a fluid that could be described by hydrodynamics.

"Instead of watching how a single particle was affected by an electric or thermal force, we could see the conserved energy as it flowed across many particles, like a wave through water," said Crossno.

"Physics we discovered by studying black holes and string theory, we're seeing in graphene," said Andrew Lucas, co-author and graduate student with Subir Sachdev, the Herchel Smith Professor of Physics at Harvard. "This is the first model system of relativistic hydrodynamics in a metal."

Moving forward, a small chip of graphene could be used to model the fluid-like behavior of other high-energy systems.

"We needed to find a clever way to ignore the heat transfer from the lattice and focus only on how much heat is carried by the electrons," Fong said.

To do so, the team turned to noise. At finite temperature, the electrons move about randomly: the higher the temperature, the noisier the electrons. By measuring the temperature of the electrons to three decimal points, the team was able to precisely measure the thermal conductivity of the electrons.

"Converting thermal energy into electric currents and vice versa is notoriously hard with ordinary materials," said Lucas. "But in principle, with a clean sample of graphene there may be no limit to how good a device you could make."
 
Unlike this thread here ( https://endless-sphere.com/forums/viewtopic.php?f=3&t=76035&start=25#p1150298 ) which I find a bit annoying as it doesn't really represent anything like a final product of graphene should look like. To me the nano atom scale of graphene should be most ideal for capacitors as you can hold electrons in place in a truly epic scale..

I thought I would post some video URLs by this guy who is making alot of videos on graphene mega-capacitors.. Hes working at Edison Labs/sunvault/some University in Canada.
His name is Robert Murray-Smith and while his videos lack good video description details they do have some great examples or work and capabilities of what graphene can bring us..

Now remember the two great things/ideals you get out of capacitors compared to batteries is close to unlimited discharge/C rate and ideally close to unlimited cycles, or if the price is right we will all be very happy with just say 10,000 cycles?...
https://www.youtube.com/user/RobertMurraySmith/videos

1 MegaFarad Supercapacitor
https://www.youtube.com/watch?v=8TkwoHgkuR0

2,000 Farads in a credit card
https://www.youtube.com/watch?v=Mno-XDP2o2c

Other ones..
https://youtu.be/6acygQLg-HM
https://www.youtube.com/watch?v=_ICXydP2aKw
https://www.youtube.com/watch?v=rCh-U2DUM94
Not power releated but just graphene related.. https://www.youtube.com/watch?v=o7j5ld0m3RI
http://www.sunvaultenergy.com/web20/edison-power-and-sunvault-energy-create-cost-effective-graphene-reinforced-plastic-for-multi-purpose-uses/
His youtube channel is just riddled with graphene material videos..
Based one what hes been talking about in farad count and size/weight on some of these graphene caps its going to make the current market super-capacitors look somewhat like Lemon battery vs lead acid, here is an example video of what current market super-capacitors can do below..(Which used to be impressive but pretty crappy compared to what a graphene cap will do)
https://youtu.be/TdqskMl_rzI
 
LockH said:
gabriel83 said:
LockH said:
More info:
http://forococheselectricos.com/2016/02/mas-detalles-tecnicos-de-las-baterias-de-graphenano.html
ACK! No hablan español a mí mismo! Any good bits?

... and again (in English) in part:
http://futurism.com/scientists-develop-better-battery-thanks-graphene/
Dubbed Grabat, the batteries will be manufactured in Yecla, Spain and will have an energy density of 1,000 Wh/kg (for comparison, lithium batteries generally have a energy density of 180 Wh/kg). Grabat will also have a voltage of 2.3 V.

If that’s not enough, the battery could discharge and charge faster than a standard lithium ion battery (almost 33 times that of lithium). It also does not exhibit memory effect, a phenomenon in which charging a battery multiple times lowers its maximum energy potential.

[youtube]mpfjHM-ZIcQ[/youtube]

Finally:
Best of all, independent analyses by TÜV and Dekra have demonstrated that the batteries are safe and are not prone to explosions like lithium batteries, and tests conducted by the company have shown that, after being short-circuited, the battery is able to return to work with 60% of the load.
 
"Graphene-Infused Bike Tires Automatically Get Softer While Cornering For Better Grip"
http://gizmodo.com/graphene-infused-bike-tires-automatically-get-softer-wh-1763751098

...by adding graphene Vittoria’s new G+, or Graphene Plus, tires exhibit wonderful new properties. When riding on straightaways, the dual-layer makeup of the G+ tires allows them to remain firm for lower rolling resistance and added speed. But when a cyclist is braking or cornering, the tires get soft for added traction and grip.

Furthermore, even though the added graphene is just a few atoms thick the Vittoria’s new tires are also far more resilient.


... and in Popular Mechanics:
http://www.popularmechanics.com/adventure/sports/how-to/a19851/graphene-bike-tires/

...lighter than ordinary tires. ...longer-lasting ...more puncture resistant.
 
"China Invests in Wonder Material Graphene"
http://www.bike-eu.com/sales-trends/nieuws/2016/5/china-invests-in-wonder-material-graphene-10126479

"China is one of the most graphite-rich countries" 8)

Integrating graphene in bike products
Such industrialization happened already within the bicycle industry for a number of products by Vittoria. The company holds distribution rights for various countries of pristine graphene nanoplatelets. The tyre and wheelset producer managed to integrate graphene into tyres and composite material for carbon wheelsets. Numerous possibilities are there for other companies in the bike industry to integrate graphene in their line-ups as it brings unprecedented features to carbon frames, other composite products, textiles, as well as electric (e-bike) parts – because graphene is also a superconductor.
8)
 
(Published on Youtube on Feb 16, 2016)
[youtube]uueLj9zXuic[/youtube]
 
(Published on Youtube on March 10, 2016.)
[youtube]zJKeGUPaEBI[/youtube]
 
YAY! "Hemp fibres 'better than graphene'"
http://www.bbc.com/news/science-environment-28770876
_76912486_hempfieldthinkstock.jpg


(Yes kiddies, it's not just for smoking any more...)

The waste fibres from hemp crops can be transformed into high-performance energy storage devices, scientists say.

They "cooked" cannabis bark into carbon nanosheets and built supercapacitors "on a par with or better than graphene" - the industry gold standard.
 
The problem is that he has a site that has ads on it, that he (or someone) gets revenue from. Driving traffic from ES to that site without really contributing to ES directly could be considered spamming.

Others have done it before, and have also been asked to post the articles. Some did and stayed as contributors to ES, some didn't and left ES as non-contributors.
 
"Graphene: The New Superman of Materials":
http://interestingengineering.com/graphene-new-superman-materials/

Includes:
A new study proved that graphene’s electrons react faster than previously thought. Thus, graphene can handle far more electrical current than other materials, solidifying its place as the go-to electronic building block.

A team from Austria’s Institute of Applied Physics at TU Wien showed just how quick the electrons in graphene can be. The impact of xenon ions with a highly-charged graphene film caused electrons to be stripped from a spot. Each xenon atom can remove 20 electrons in any one area. Given that each carbon atom only has six electrons, the xenon could’ve easily ruined graphene’s stability.
 
LockH said:
"Graphene: The New Superman of Materials":
http://interestingengineering.com/graphene-new-superman-materials/

Includes:
A new study proved that graphene’s electrons react faster than previously thought. Thus, graphene can handle far more electrical current than other materials, solidifying its place as the go-to electronic building block.

A team from Austria’s Institute of Applied Physics at TU Wien showed just how quick the electrons in graphene can be. The impact of xenon ions with a highly-charged graphene film caused electrons to be stripped from a spot. Each xenon atom can remove 20 electrons in any one area. Given that each carbon atom only has six electrons, the xenon could’ve easily ruined graphene’s stability.
Seems like the same old stuff, instead of these scientists constantly talking about graphenes amazing properties we still haven't seen any real world use of production, need more scientists in the production side of things happening.

I been expecting to see the windings of electromagnetic coils changed to a graphene-based winding so that we can get closer to 100% efficiency of an electric motor or a windturbine as it should at least have considerably lower heat generation.

Considering the average windfarm creates in the 1000's of tons of radioactive waste sludge due to the huge size of the neodymium rare earth magnets inside the average 3MW windturbine and considering the comparatively useless average power generation 150 windturbines combined create in the average sized farm compared to a coal plant I would have thought we would of at least seen or heard of such technology as graphene based windings to help give more good arguments for renewables.
https://www.theguardian.com/environment/gallery/2015/apr/15/rare-earthenware-a-journey-to-the-toxic-source-of-luxury-goods
http://www.dailymail.co.uk/home/moslive/article-1350811/In-China-true-cost-Britains-clean-green-wind-power-experiment-Pollution-disastrous-scale.html

[youtube]S_9Q_6fuGNI[/youtube]
 
Porous, 3D Graphene: MIT Scientists Make ‘One Of The Strongest, Lightest Materials Known’
In an announcement Friday, researchers from the Massachusetts Institute of Technology (MIT) said they had “designed one of the strongest lightweight materials known, by compressing and fusing flakes of graphene, a two-dimensional form of carbon.” One of the variants of the lightweight material has a density of just 5 percent that of steel, but is still 10 times stronger.
Curiouser and curiouser.
 
ES Bible "Search found 3 matches: +fullerenes"... and "Search found 2 matches: +"Carbon 60""... seen here:
Spotting potential in defunct equipment may help NanoNB quadruple sales in a year:
http://business.financialpost.com/e...onb-quadruple-sales-in-a-year?__lsa=2285-2010

NanoNB is focused on nanotechnology — the manipulation of materials smaller than 100 nanometres, including individual atoms and molecules. The company has followed the path of Chibante’s previous research — the engineering of carbon nano-structures, particularly one called Carbon 60.

Carbon 60, a molecule shaped like a soccer ball, is part of a family of nano-structures called fullerenes. Each one has a different shape and unique properties. Carbon 60 offers a “buffet of opportunities,” Chibante says. NanoNB is using Carbon 60 to produce components used in conductive ink and automotive and composite applications.
 
^^ Hehe... Article includes:
In the clamour for funding, resentment is not unusual, particularly if the money appears to be aimed at one specific project rather than a whole field of fundamental research which may deliver far more in the long run.

... and ends:
The miracle material will soak up a lot of money but, taking a long view, it's unlikely that much will be wasted.

:mrgreen:
 
C60 and C70 has a lot of potential for improvement in cell performance and durability.

If you had a cheap source for clean C60-C70 it would be fantastic.
 
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