• Howdy! we're looking for donations to finish custom knowledgebase software for this forum. Please see our Funding drive thread


Oh goody. "Talga to Build Graphene Demonstration Plant in Germany".
Graphene Imperfections Could Lead To Improved Fuel Cells
arkmundi said:
[mazing breakthrough in the catching falling air-plane gambit! There are just too many air-planes falling out of the sky. :lol:

But I wonder what they attach the web to? A really tall tree? And how do you train spiders? I usually try to kill them. I can just imagine getting caught in one of these super webs in my back yard. I think I'll pass on that application. :wink:
"World's Thinnest Light Bulb Created from Graphene"

Scientists have long wanted to create a teensy "light bulb" to place on a chip, enabling what is called photonic circuits, which run on light rather than electric current. The problem has been one of size and temperature — incandescent filaments must get extremely hot before they can produce visible light. This new graphene device, however, is so efficient and tiny, the resulting technology could offer new ways to make displays or study high-temperature phenomena at small scales, the researchers said.

And the Lord (one of them) said "Let There Be Light".
spinningmagnets said:
. . . . sneering at Googles efforts to bring smart phones and cell antennas hoisted by balloons. . .the education provided by access to educational info on the web might actually save more lives?...

Ultimately some such efforts had to use local labor to make the technologies they wanted to put in place affordable, creating jobs. Some 100 years ago American missionaries to China figured out how much cheaper it would be if they set up a few printers in the country instead of paying to ship bibles across the Pacific. One guy used the profits to to also open a factory that offered cheap noodles, etc., to go with the slowly improving economy. Charlie Soong (Ironically one of the very few converts) became the richest man in China at the time and helped set up the semiunified government that brought peace to everywhere that Mao Zedong wasn't. Of course where Mao WAS he was killing the farmers and giving the land to his own people. . . .

Speaking of Americana with causes going abroad:

arkmundi said:
I'm all for recognizing smug arrogance . . . the 1%, who set up these tax exempt empires with their wealth pretending they're solving unsolvable problems. . . .

Suddenly I realize my calling in life. But where do I get all the wealth?

And where should I put the graphene condom factory?
Dauntless said:
Charlie Soong (Ironically one of the very few converts) became the richest man in China at the time and helped set up the semiunified government that brought peace to everywhere that Mao Zedong wasn't. Of course where Mao WAS he was killing the farmers and giving the land to his own people. . . . Suddenly I realize my calling in life. But where do I get all the wealth? And where should I put the graphene condom factory?
Truth-out: China's Communist-Capitalist Ecological Apocalypse
Some would say it'd be natural to put it in China, but how much longer can they sustain in the face of a terrifying ecological apocalypse? A long article, but the author strives to show how different "business" is in China from anywhere else, how corrupt it is and oblivious to the common welfare. Then again, China's One-child Policy does suggest their extreme need for condoms.

But, expanding on the idea of printers, now for graphene, so factory anywhere...

OK... exploring this further, seems that June 2015 marks the first ever Graphene Week, at the newly opened National Graphene Institute at the University of Manchester in the UK, a growing consortium at the birthplace of graphene research.
Alright, since it was a useful moment to take another dive into the world of graphene, to see what's emerging...
G2O’s graphene water membranes can reduce energy costs by 80-90% saving a 50 million gallons/day desalination plant up to $30m per year and reducing water costs by 40%
What with the California drought, extreme dependence on California agriculture for food production, and not wanting to see food price escalation in the face of our climate crisis, this is a remarkable development.
Nature: Silicon carbide-free graphene growth on silicon for lithium-ion battery with high volumetric energy density
Here we report direct graphene growth over silicon nanoparticles without silicon carbide formation. The graphene layers anchored onto the silicon surface accommodate the volume expansion of silicon via a sliding process between adjacent graphene layers. When paired with a commercial lithium cobalt oxide cathode, the silicon carbide-free graphene coating allows the full cell to reach volumetric energy densities of 972 and 700 Wh l−1 at first and 200th cycle, respectively, 1.8 and 1.5 times higher than those of current commercial lithium-ion batteries.
FYI, that's the Samsung research team, so one of the battery majors. Remarkable development.
Graphene Is Turned into Zero-Resistance Wonder Material
by Charles Q. Choi, Live Science Contributor | September 14, 2015 04:24pm ET

Atom-thin layers of carbon can be turned into superconductors — extraordinary materials that conduct electricity without dissipating energy, physicists say. The findings could help lead to advanced magnetic sensors for brain scanning, the researchers added.

The form of carbon found in pencils is graphite, which is made of sheets of carbon stacked atop each other. The sheets are known as graphene, and they are made of a single layer of carbon atoms arranged in a honeycomb pattern.

Graphene is extraordinarily strong — about 200 times stronger than steel by weight. Graphene is also highly electrically conductive, and scientists worldwide are researching whether it could be used in advanced circuitry and other electronic devices.

Although graphene has many spectacular electronic properties, until now superconductivity was a notable exception. Superconductors conduct electricity with zero resistance, and so can lead to more efficient power lines. (Power companies typically lose about 7 percent of their energy to heat caused by resistance in transmission wires.)

Superconductivity was previously seen in graphite. Theoretical models suggested that graphene could also become superconducting, if adorned with additives.

Now, an international team of scientists has created the first-ever superconducting graphene by coating it with lithium atoms.

"Many groups have tried for many years to achieve superconductivity with graphene,"study principal investigator Andrea Damascelli, director of the University of British Columbia's Quantum Matter Institute in Vancouver, told Live Science. "The way you prepare the samples is key."

Scientists at the Max Planck Institute for Solid State Research in Stuttgart, Germany, created the graphene sheets. Researchers at the University of British Columbia then coated the graphene with lithium atoms.

Previous attempts to create superconducting lithium-coated graphene failed because the coating techniques introduced sources of instability, such as warmth. This instability made lithium atoms scatter around in ways that kept the graphene from superconducting.

Instead, Damascelli and his colleagues coated their graphene sheets with lithium in ultra-high-vacuum conditions at about minus 450 degrees Fahrenheit (minus 268 degrees Celsius), just about 5 degrees above absolute zero.

Superconductivity relies on electrons not repelling each other as they do in ordinary materials, but instead forming delicate pairs that can flow through superconductors effortlessly. Electrons in these pairs are held together by phonons, or vibrations of the superconductor's atoms. The lithium atoms enhanced the phonon-binding of electrons in the graphene, allowing superconductivity to occur at minus 449 degrees F (minus 267 degrees C).

The researchers do not think superconducting graphene will be used to develop more efficient power lines. Rather, Damascelli suggests it could be used in extraordinarily sensitive magnetic sensors known as SQUIDs, or superconducting quantum interference devices, which can scan brain activity with exquisite detail.

"It could lead to a 100-fold increase in the sensitivities we currently have," Damascelli said. "That's where superconductivity could really have a huge impact."

The researchers hope to better understand the nature of graphene's superconductivity, which could help them find ways to make it superconduct at warmer temperatures, Damascelli said.

The scientists detailed their findings online Sept. 7 in the journal Proceedings of the National Academy of Sciences.


Researchers added lithium atoms to graphene to create superconductivity.
Credit: Andrea Damascelli
"Self-Folding Minirobots Possible with Origami-Inspired Graphene"

Scientists from Donghua University in China have demonstrated that gently heating a sheet of graphene paper, which is extraordinarily strong (about 200 times stronger than steel by weight), could make it fold into a device that is able to walk forward and backward. And, in a first for this kind of self-folding material, they showed it could also change directions.

"Researchers Find a Way to Produce Graphene 100 Times Cheaper"
Graphene First isolated in 2004, graphene is a carbon allotrope with impressive properties. It is the world’s thinnest material – at just a single atom thick – yet it’s 200 times stronger than steel, and it conducts heat and electricity better than copper. Such characteristics are, of course, invaluable in industrial applications. Unfortunately, graphene faces production obstacles, particularly the price. Several studies are already ongoing, but a recent report by scientists from Glasgow University gives new hope – they have found a way to produce graphene one hundred times more cheaply using the same inexpensive and readily commercially available copper used to manufacture lithium-ion batteries (which are found in everyday household appliances).

The Breakthrough Method

Researchers used copper that is around $1 USD per square meter, impressively low compared to the $115 USD copper used for the traditional method, which also requires specific preparation methods for the copper that adds further costs.

The researchers used a process that is a little similar to the existing process to produce graphene, chemical vapor deposition. However, as previously noted, they instead used commercially-available copper foils, often used as the negative electrodes in lithium-ion batteries, as a surface on which to create high-quality graphene. This novel approach also offers a great improvement in the electrical and optical performance of the material. Besides improving the fields of electronics and energy, the researchers also pointed out that graphene could help provide an ultraflexible conductive surface for people with prosthetics. This would provide a sensation in a way that is impossible for even the most advanced prosthetics today. Furthermore, as graphene can create a perfect barrier between liquids and gases, it can be used to provide clean potable water, especially in developing countries.

Source: Herald Scotland
... Looks to Displace Batteries With Supercapacitors
By Dexter Johnson

Posted 4 Dec 2015 | 21:00 GMT
Almost exactly a year ago, we first got word that researchers at Rice University had developed a method for producing graphene that features a computer-controlled laser. They dubbed the result laser-induced graphene (LIG).

Since then, LIG has been proposed for flexible supercapacitors that could power wearable electronics.

The researchers at Rice have continued to pursue supercapacitors for this new form of graphene and have continued to refine the LIG process to the point where they now believe it may be capable of moving energy storage away from batteries and towards supercapacitors.

The key attribute of LIG is how comparatively easy it is to produce as opposed to graphene made via chemical vapor deposition. For LIG, all that is needed is a commercial polyimide plastic sheet and a computer-controlled laser. The Rice researchers discovered that the laser would burn everything on the polyimide except the carbon from the top layer. What remains is a form of graphene.

You can see a description and demonstration of the process in the video below.

The researchers think that this process will ultimately lend itself to roll-to-roll production. That will eliminate complex manufacturing conditions that have thus far limited the widespread application of microsupercapacitors.

“It’s a pain in the neck to build microsupercapacitors now,” said James Tour, who has been leading this line of research at Rice since the beginning, in a press release. “They require a lot of lithographic steps. But these we can make in minutes: We burn the patterns, add electrolyte and cover them.”

The researchers claim that the microsupercapacitors they have fabricated using LIG have demonstrated an energy density that is on par with thin-film lithium-ion batteries. The microsupercapitors’ capacitance was measured at 934 microfarads per square centimeter; they boast an energy density of 3.2 milliwatts per cubic centimeter. As these are supercapacitors, their power density far exceeds that of batteries. Perhaps most importantly, the devices did not exhibit any degradation over time, maintaining mechanical stability even after being bent 10,000 times.

Encouraging as these numbers are, there yet remains some work to be done before supercapacitors displace batteries.

We’re not quite there yet, but we’re getting closer all the time,” said Tour in the press release. “In the interim, they’re able to supplement batteries with high power. What we have now is as good as some commercial supercapacitors. And they’re just plastic.”
"Vittoria To Start a Cycling Revolution With Graphene"
Hehe... Don't EVen mention the battery composition...

Oh... but they DID use the R Word. ("revolution") "For "regular" (?!) electric bikes the new Vittoria tyres with graphene allows for longer battery life in urban usage, due to greatly reduced rolling resistance. The new Revolution offers fast-rolling comfort on any bicycle and, claims Vittoria, truly excels on e-bikes."
Move over graphene. There's a new player in town. New phrase for ES Dictionary? "Diamond Nanothreads". Seen here:

In part:
The team, led by chemistry professor John Badding, applied alternating cycles of pressure to isolated, liquid-state benzene molecules and were amazed to find that rings of carbon atoms assembled into neat and orderly chains.

While they were expecting the benzene molecules to react in a disorganized way, they instead created a neat thread 20,000 times smaller than a strand of human hair but perhaps the strongest material ever made.


The dawning of the age of the Super Ebike frame.
edit: Beaten by 4 minutes, discussion thread here

Turnigy Graphene


TURNIGY, the name synonymous with performance, reliability and innovation is excited to release a powerful new battery chemistry in the Turnigy Graphene!
What does this really mean for you? Well not only do Graphene batteries go harder for longer but they're unlike anything you have seen or used before.
Turnigy Graphene packs utilize carbon in the battery structure to form a single layer of graphene just 0.335nm thick, making that type of battery substrate the thinnest known to mankind. The graphene particles form a highly dense compound allowing electrons to flow with less resistance compared to traditional Lipoly battery technologies.
The result is a battery capable of maintaining greater power output whilst remaining much cooler under load. Since heat and resistance are the natural enemy of batteries Graphene chemistry has significantly reduced these problems and the result is an incredible boost in cycle life.
Turnigy Graphene batteries are the new standard for serious hobbyists who require POWER ON DEMAND.
Capacity: 6000mAh
Voltage: 4S1P / 4 Cell / 14.8V
Discharge: 65C Constant / 130C Burst
Weight: 742g (including wire, plug & case)
Dimensions: 168x69x34mm
Balance Plug: JST-XH
Discharge Plug: XT-90
Advantages over traditional Lipo batteries.
• Power density: 0.15-0.17kw/kg (5Ah-16Ah)
• Power density: 0.13-0.15kw/kg (1Ah-4.9Ah).
• Stable High pack voltage through duration of use.
• High discharge rate, giving more power under load.
• Internal impedance can reach as low as 1.2mO compared to that of 3mO of a standard Lipoly.
• Greater thermal control, packs stay much cooler under extreme conditions
• Higher capacity during heavy discharge.
• Maintains higher pack capacity even after hundreds of cycles
• Fast charge capable, up to 15C on some batteries.
• Longer Cycle Life 600+
390A continuous? Yeah, right.

They didn't mention if these will blow up easier than regular Lipo. Interesting if it really performs as advertised.
cwah said:
HK nailed down graphene batteries!

Hehe... Suggest grabbing HK while they're hot. Will take a bit for others to ramp up production.

(OK. Maybe not "hot" hot... but ya know watt I mean.)