News tagged with graphite
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 |
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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) |
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Carbon nanoballs as data storage units
Small, smaller, "nano" data storage! Interest is growing in the use of metallofullerenes - carbon “cages” with embedded metallic compounds - as materials for miniature data storage devices. Researchers at ...
Sep 01, 2009 |
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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 |
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Meteorite yields carbon crystals harder than diamond
(PhysOrg.com) -- Two new types of ultra-hard carbon crystals have been found by researchers investigating the ureilite class Haverö meteorite that crashed to Earth in Finland in 1971. Ureilite meteorites are ...
Feb 03, 2010 |
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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) |
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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 |
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Structure of new form of super-hard carbon identified
(PhysOrg.com) -- An experiment in 2003 formed what was believed to be a new form of carbon, but the findings were controversial. Now two teams of scientists have used different means to identify a three-dimensional ...
Nanotechnology / Nanomaterials
Nov 08, 2010 |
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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 |
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Researchers invent new method for graphene growth
(PhysOrg.com) -- A Cornell research team has invented a simple way to make graphene electrical devices by growing the graphene directly onto a silicon wafer.
Nanotechnology / Nanomaterials
Nov 10, 2009 |
4.9 / 5 (24) |
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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 |
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Liquid method: pure graphene production
In a development that could lead to novel carbon composites and touch-screen displays, researchers from Rice University and the Technion-Israel Institute of Technology today unveiled a new method for producing ...
Nanotechnology / Nanomaterials
May 30, 2010 |
4.9 / 5 (24) |
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Curved carbon for electronics of the future
A new scientific discovery could have profound implications for nanoelectronic components. Researchers from the Nano-Science Center at the Niels Bohr Institute, University of Copenhagen, in collaboration with ...
Jan 23, 2011 |
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Lithium-ion anode uses self-assembled nanocomposite materials to increase capacity
A new high-performance anode structure based on silicon-carbon nanocomposite materials could significantly improve the performance of lithium-ion batteries used in a wide range of applications from hybrid ...
Nanotechnology / Nanomaterials
Mar 15, 2010 |
4.9 / 5 (20) |
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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 |
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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.
