News tagged with graphite
Scientists take steps toward creating artificial graphene
(Phys.org) -- Researchers first observed graphene in 2004 by extracting the single-atom-thick sheets of carbon from bulk graphite. While graphene’s electrical and optical properties have proven to have ...
Nanotechnology / Nanomaterials
May 29, 2012 |
4.5 / 5 (8) |
2
|
New nanostructure for batteries keeps going and going
(Phys.org) -- For more than a decade, scientists have tried to improve lithium-based batteries by replacing the graphite in one terminal with silicon, which can store 10 times more charge. But after just a ...
May 11, 2012 |
4.8 / 5 (67) |
28
|
Diamond used to produce graphene quantum dots and nano-ribbons of controlled structure
Kansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionize electronics and optoelectronics.
May 17, 2012 |
5 / 5 (4) |
0
|
Graphene enhances many materials, but leaves them wettable
Graphene is the thinnest material known to science. The nanomaterial is so thin, in fact, water often doesn't even know it's there.
Nanotechnology / Nanomaterials
Jan 23, 2012 |
4.8 / 5 (12) |
1
|
Physicists create carbon magnetism by removing atoms from graphite
(PhysOrg.com) -- Physicists have found that, by removing individual atoms from a graphite surface, they can create local magnetic moments in the graphite. The discovery could lead to techniques to artificially ...
Mar 22, 2010 |
4.6 / 5 (47) |
9
|
How Perfect Can Graphene Be?
(PhysOrg.com) -- Physicists have investigated the purest graphene to date, and have found that the material possesses unprecedented high electronic quality. The discovery has raised the bar for this relatively ...
Nanotechnology / Nanomaterials
Oct 13, 2009 |
4.5 / 5 (31) |
5
Researchers find simple and cheap way to mass-produce graphene nanosheets
Mixing a little dry ice and a simple industrial process cheaply mass-produces high-quality graphene nanosheets, researchers in South Korea and Case Western Reserve University report.
Nanotechnology / Nanomaterials
Mar 26, 2012 |
5 / 5 (33) |
22
|
Producing graphene layers using crystallization
(PhysOrg.com) -- Ever since it's relatively recent discovery, graphene has generated a great deal of interest. Graphene is extracted from graphite in many cases, and consists of a sheet of carbon atoms bound together in a ...
Nanotechnology / Nanomaterials
Mar 02, 2010 |
4.7 / 5 (12) |
1
|
Microprocessors from pencil lead
(PhysOrg.com) -- University of Arizona physicists are making discoveries that may advance electronic circuit technology.
Mar 30, 2012 |
4.5 / 5 (10) |
1
|
A breakthrough on paper that's stronger than steel
(PhysOrg.com) -- University of Technology, Sydney scientists have reported remarkable results in developing a composite material based on graphite that is a thin as paper and ten times stronger than steel.
Nanotechnology / Nanomaterials
Apr 20, 2011 |
4.9 / 5 (34) |
53
|
Graphite + water = the future of energy storage
A combination of two ordinary materials – graphite and water – could produce energy storage systems that perform on par with lithium ion batteries, but recharge in a matter of seconds and have an ...
Nanotechnology / Nanomaterials
Jul 15, 2011 |
4.7 / 5 (54) |
60
|
New form of superhard carbon observed
An amorphous diamond – one that lacks the crystalline structure of diamond, but is every bit as hard – has been created by a Stanford-led team of researchers.
Oct 11, 2011 |
4.9 / 5 (20) |
5
|
Graphene ink created for ink-jet printing of electronic components
(PhysOrg.com) -- A group of UK scientists has created a graphene ink that can be used to ink-jet print electronic devices such as thin film transistors.
Nanotechnology / Nanomaterials
Nov 25, 2011 |
4.8 / 5 (15) |
6
|
A simple slice of energy storage
Turning graphite oxide (GO) into full-fledged supercapacitors turns out to be simple. But until a laboratory at Rice University figured out how, it was anything but obvious.
Nanotechnology / Nanomaterials
Aug 01, 2011 |
4.5 / 5 (19) |
11
|
New charging method could greatly reduce battery recharge time
(PhysOrg.com) -- Part of the headache of having to constantly recharge batteries is not just how often they need to be charged, but also the time it takes to charge them. In a new study, researchers have proposed ...
Mar 11, 2010 |
4.7 / 5 (25) |
14
|
Graphite
The mineral graphite /ˈɡræfaɪt/ is one of the allotropes of carbon. It was named by Abraham Gottlob Werner in 1789 from the Ancient Greek γράφω (graphō), "to draw/write", for its use in pencils, where it is commonly called lead (not to be confused with the metallic element lead). Unlike diamond (another carbon allotrope), graphite is an electrical conductor, a semimetal. It is, consequently, useful in such applications as arc lamp electrodes. Graphite is the most stable form of carbon under standard conditions. Therefore, it is used in thermochemistry as the standard state for defining the heat of formation of carbon compounds. Graphite may be considered the highest grade of coal, just above anthracite and alternatively called meta-anthracite, although it is not normally used as fuel because it is difficult to ignite.
There are three principal types of natural graphite, each occurring in different types of ore deposit:
Highly ordered pyrolytic graphite or highly oriented pyrolytic graphite (HOPG) refers to graphite with an angular spread between the graphite sheets of less than 1°. This highest-quality synthetic form is used in scientific research. The name "graphite fiber" is also sometimes used to refer to carbon fiber or carbon fiber-reinforced polymer.
For more information about Graphite, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
