Researchers at Samsung and Sungkyunkwan University in Korea have produced a large layer of pure graphene - as large as a TV panel. The 30" sheet was produced using a roll-to-roll printing process, and the Graphene was disposed on a polyester sheet.
Such large Graphene can be used in flat panel displays.
Angstron Materials has teamed with K2 Energy Solutions to participate in a Department of Energy (DOE) research project for the development of hybrid nano graphene platelet-based high-capacity anodes for Lithium-ion (Li-ion) batteries. The team will commercialize its new anode technology which has the capability to capture the high charge capacity allowed with silicon over extended charge/discharge life, using a network of highly conductive yet inexpensive nanoscale graphite filaments.
Angstron and K2 will conduct the project over three phases with initial activity focused on demonstrating the commercial and technical viability of new high-energy anode materials. This will include delivering data on anodes capable of initial specific capacities of 650 mAh/g and achieving ~50 full charge/discharge cycles in small laboratory scale cells (50 to 100 mAh) at the 1C rate with less than 20 percent capacity fade. Phase II will target development of process technology for cost-effective production of the optimized Si-coated NGP/CNF blends.
Strem Chemicals, Inc, a Cambridge based manufacturer of specialty chemicals for research and development, announced that it has signed an exclusive agreement with Catalyx Nanotech to make Stacked Graphene NanoFibers (SGNF) available for R&D purposes.
Stacked Graphene Platelet Nanofibers are grown via a patented process that decomposes carbon containing gases in the presence of metal catalyst particles. The structure of the stacked grapheme platelet nano fibres consists of graphene sheets oriented perpendicular to the growth axis like a stack of cards, spaced 0.34nm apart. The fibres have a mean width of 40-50nm and are 100-10,000nm long!
Scientists have made a breakthrough toward creating nanocircuitry on graphene, widely regarded as the most promising candidate to replace silicon as the building block of transistors. They have devised a simple and quick one-step process based on thermochemical nanolithography (TCNL) for creating nanowires, tuning the electronic properties of reduced graphene oxide on the nanoscale and thereby allowing it to switch from being an insulating material to a conducting material.
The technique works with multiple forms of graphene and is poised to become an important finding for the development of graphene electronics.
A European team has developed a new way to Graphene, on the cheap. The team has grown high-quality graphene on the surface of commercially available silicon carbide wafers to produce material with excellent electronic properties. It had been thought that the substrate they used, cubic 3C-SiC, or β-SiC (which is widely grown commercially), wouldn't be suitable because of its cubic lattice structure. But they say that the interaction with the substrate is almost negligible, rendering this system a perfect candidate for future graphene-based electronics.
Vorbeck Materials announces a new Graphene-based conductive ink formulation for flexographic printing, Vor-ink Flexo. The new ink enables the high-speed printing of this highly conductive material. Like other Vor-ink formulations using graphene, Vor-ink Flexo retains conductivity even after repeat bending and folding. Vor-ink Flexo can be cured at low temperatures and is designed for use on a variety of substratesincluding paper, paperboard, and polymer films.
Vor-ink Flexo is available at a cost well below competing silver-basedinks. In addition, printers can rely on high line speeds and rapid drying, lowering costs by increasing throughput. Vor-ink Flexo is designed to be used on current commercial flexographic presses without the need for specialized equipment, providing a cost-effective solution for high-speed roll-to-roll printing of electronics.