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Graphene is the world's strongest, thinnest and most conductive material, made from carbon. Graphene's remarkable properties enable exciting new applications. Our site brings you daily news and resources, all graphene focused.
Recent Graphene news:
Researchers from Lawrence Livermore (LLNL) developed new supercapacitor electrodes made from modified graphene aerogels. Those electrodes feature high surface area, good electrical conductivity, chemical inertness and long-term cycling stability.
The researchers report that the graphene aerogel can improve the performance of commercial carbon-based (carbon black and binder materials) supercapacitor electrodes by more than 100%. The graphene aerogel electrodes have better density and pore size distribution, and increased conductivity.
Electrochromic displays are made from materials in which the transmittance of light to be adjusted by applying a voltage. These work similarly to LCDs by letting light from a backlighting unit (BLU) pass or not and so show desired images. These kind of displays haven't been commercialized successfully yet due to fragile materials and material mismatches with the electrodes.
But this may change now, thanks to graphene. Researchers at Bilkent University developed a graphene electrochromic device that demonstrated 55% modulation and a broad spectral response. Both the electrode and the electrochromic device are made from graphene, and this enables a high percentage optical modulation, optical tuning properties in the UV to infrared, good electrical conductivity with no material mismatches. The display is mechanically flexible.
Elcora aims to become a vertically integrated graphite to graphene production company, changes name to Graphene Corporation
Elcora Resources, a Canadian graphite mining company (with a 40% equity stake in a Sri Lanka based graphite mine) announced plans to become a vertically-integrated carbon company, from graphite mining to graphene production. Elcora will also changes its name to the Graphene Corporation.
The company hopes that controlling all the steps from graphite mining to final graphene production will enable it to optimize the conversion of the processed graphite to bulk, top-down, single or few layered graphene. The company is currently testing several graphene production methods and will soon (before the end of 2014) choose one and scale it up to a "market supportable production rate".
Strategic Energy Resources (SER) signed a jointly-funded research agreement with Monash Universtiy to develop a bench-scale facility for graphene production. Monash and Graphitech (SER's wholly owned subsidiary) will fund this project, with Monash contributing $100,000.
SER expects that they will start the setup in November 2014, and it will take about 3 months to fully set-up and test it. Graphitech will retain ownership of the facility, with Monash responsible for the maintenance and upkeep of the facility. Initial batches of graphene production will be in the range of 1 kilogram to 2 kilogram per day.
Graphene Nanochem entered into a product development and collaboration agreement with Sync R&D - for the development of a next-gen graphene-enhanced Li-Ion battery solution for electric buses, under the Electric Bus 1 Malaysia program.
Under the agreement, Graphene NanoChem and Sync R&D will develop and integrate a graphene-enhanced Li-on Battery into a prototype electric shuttle bus in Malaysia. Sync R&D will design and develop the shuttle bus while Graphene NanoChem will design and produce the battery.
Graphenea has opened a branch in the USA to assist more immediate service of the company's North American customers. The US branch, Graphenea Inc, is based in Cambridge (Boston), MA, due to the close relation that the company has with research giants Massachusetts Institute of Technology (MIT) and Harvard. Apart from developing collaborative projects with those two partners, and acting as a sales outpost for its renown high-quality graphene, Graphenea Inc will set up an “Applications Laboratory” to help develop custom graphene materials.
“The US outpost of Graphenea will continue and enhance the research excellence of the company, with planned hirings of full time R&D and Business Development personnel”, says Jesus de la Fuente, CEO of Graphenea. “The most pronounced application directions that we will pursue will be advanced polymers, thermal interface materials, energy storage, and (bio)sensors.”
Researchers from University of California - Riverside (UCR) report that compressed graphene laminate on PET achieve a higher thermal conductivity compared to non-compressed laminates (for the same average flake size). This is due to better flake alignment.
Graphene has a very high thermal conductivity. At room temperature, a graphene sheet has thermal conductivity of 2000 W/mk to 50000 W/mk. When you place it on a substrate the conductivity is lowered substantially (to around 90 W/mk) - but it is still substantially better than that of plastics.