Versarien to enter agreement with global chemical company to distribute its Nanene brand

Feb 16, 2017

Versarien logo imageVersarien, the advanced materials group that recently launched its new graphene brand called Nanene, has announced that it has signed heads of terms regarding a distribution agreement with Lansdowne Chemicals.

Lansdowne Chemicals, a member of the Overlack Group, is a chemical distribution, manufacturing and marketing company with two UK sites and operations in Europe, Asia and the USA. The agreement, which will be for an initial six months and thereafter terminable on three months notice, will help accelerate Versarien’s route to market for Nanene by enabling Lansdowne Chemicals to target customers which Versarien currently has no relationship with.

Researchers develop a graphene-based anode material that improves the performance of sodium-ion batteries

Feb 16, 2017

Researchers from the South China University of Technology, National Taiwan Normal University and the U.S-based Georgia Institute of Technology have developed a graphene-based anode material that enables sodium-ion batteries to perform at high capacity over hundreds of cycles.

Graphene-based sodium ion batteries image

The high-performance anode material was created by binding an antimony-based mineral onto sulfur-doped graphene sheets. Incorporating the anode into a sodium-ion battery allowed it to perform at 83% capacity over 900 cycles. The researchers say this is the best reported performance for a sodium-ion battery with an antimony-based anode material.

An all-electric car with graphene-based battery to be unveiled at the 2017 Geneva Auto Show

Feb 15, 2017

One of the surprises about to be unveiled at the 2017 Geneva Auto Show is rumored to be a Chinese project - an all-electric vehicle by Pininfarina, being completed for Hybrid Kinetic Group (HK Motors of Hong Kong). The H600 luxury sedan is said to be relying on graphene-based battery technology to deliver high and lasting power.

Chinese all-electric car with graphene-based battery image

While technical specifications and range are not yet available, the graphene battery in the sedan expected to launch soon should have around 50-100 times the power density of comparable lithium-ion batteries and 5-10 times the energy density.

A novel doping method could open the door to FLG use as transparent conducting electrodes

Feb 15, 2017

Researchers from King Abdullah University of Science and Technology (KAUST), in collaboration with the Georgia Institute of Technology, have recently demonstrated a simple, solution-based, method for surface doping of few-layer graphene (FLG) using novel dopants (metal-organic molecules) that show a minimal effect on the optical transmission as compared to other dopants like metal chlorides.

This work investigates the effect of dopant strength and dosage on the electronic and electrical transport properties of doped FLG. Moreover, It reveals fundamental differences between the doping results in single layer graphene and few-layer graphene. The study focused on few-layer CVD graphene, rather than single-layer CVD graphene, a somewhat less common area of research to date.

KAUST team uses laser scribing to create graphene electrodes for biosensors

Feb 15, 2017

Researchers at the King Abdullah University of Science and Technology (KAUST) have created graphene electrodes that function as effective biosensors, by using a laser inscribe patterns into a polymer sheet. The laser scribing technique locally heats parts of a flexible polyimide polymer to 2500 degrees Celsius or more to form carbonized patterns of patches on the surface that act as electrodes.

KAUST uses laser scribing to make biosensors

The black patches are about 33-micrometers thick, with a highly porous nature that allows molecules to permeate the material. Inside the patches, the graphene sheets have exposed edges that are effective at exchanging electrons with other molecules. "Graphene-based electrodes with more edge-plane sites are effectively better than those relying on carbon or carbon-oxygen sites in the plane of the material," said a member of the KAUST team.

Rice team's CNT-reinforced graphene foam is conductive and strong

Feb 14, 2017

Researchers at Rice University have constructed a graphene foam, reinforced by carbon nanotubes, that can support more than 3,000 times its own weight and bounce back to its original height. In addition, its shape and size are easily controlled - which the team demonstrated by creating a screw-shaped piece of the material.

Rice's graphene-CNTs foam is strong and conductive

The 3D structures were created from a powdered nickel catalyst, surfactant-wrapped multiwall nanotubes and sugar as a carbon source. The materials were mixed and the water evaporated; the resulting pellets were pressed into a steel die and then heated in a chemical vapor deposition furnace, which turned the available carbon into graphene. After further processing to remove remnants of nickel, the result was an all-carbon foam in the shape of the die, in this case a screw. The team said the method will be easy to scale up.

Directa Plus and Eurojersey jointly develop graphene-enhanced textiles

Feb 14, 2017

Directa Plus, a producer and supplier of graphene-based products for use in consumer and industrial markets, has teamed up with Eurojersey, an Italian producer of technical fabrics under its Sensitive Fabrics brand, to produce a range of fabrics containing the company’s graphene-based products. The new line will focus on high-performance technical fabrics targeting sportswear and underwear sectors.

Directa Plus and Eurojersey develop graphene-based sports clothes line image

The companies are conducting joint R&D to further develop the prototype textiles into product samples that will be marketed to the customers of Directa Plus and Eurojersey. The lamination of Sensitive Fabrics with Grafytherm functional membranes containing G+, distributed exclusively by Directa Textile Solutions, reportedly produces a technologically advanced fabric with unique thermal features: the presence of G+ graphene, which is highly thermally conductive, allows a homogeneous distribution of the heat produced by the human body in cold weather and a heat dispersion effect in hot weather.