Scientists from the Korea Advanced Institute of Science and Technology (KAIST) say they have developed a new supercapacitor based on nitrogen and graphene. The new device has double the energy storage capacity of conventional capacitors. They say that the key technology here is doping the graphene with Nitrogen.

The team tested the capacitor and said that it showed no change in its capabilities even after 230,000 charge/discharge cycles.

Researchers from the National University of Singapore (NUS) invented a graphene-based an ultra-slim broadband polarizer. They say that such a polarizer can broaden the bandwidth of fiber optic networks. A graphene polarizer covers the telecommunication bands from visible to mid-infrared which means that it can be a complete solution for multiple-channel communications.

The team says that unlike regular polarizers (made from thin metal film or semiconductor dielectric) a graphene polarizer has the unique ability to filter out transverse-magnetic-mode and supports transverse-electric-mode surface wave propagation.

Nanotek Instruments was awarded $1 million by the Ohio Third Frontier Commission to accelerate the commercialization of its nano graphene platelets-based electrode materials for next generation supercapacitors. This is a joint project by Nanotek and its manufacturing company Angstron Materials.

Nanotek says that their NGP material has solved the low energy density problem by demonstrating an energy density that exceeds that of commercially available supercapacitors and is comparable with nickel metal hydride batteries.

Researchers from the University of Technology in Sydney Australia developed a new method to produce graphene - by creating a deformation in graphite after purification and filtration processes. They call the new material 'synthetic graphene' and say that the material they produced in this synthetic method and thermal process is tough, hard, and bendable.