Saint Jean Carbon provides phase one results of graphene-based battery project

Apr 23, 2017

Saint Jean Carbon has reported the results of the first phase of its graphene battery project, announced in January, 2017. According to SJC, while primary at this point, the graphene battery has outperformed the graphite battery, as shown by a greater discharge capacity of about 30%. Both batteries were manufactured with the same material, battery “A” graphite anode and “B” graphene anode.

The company supplied performance results, among which are the graphite anode’s theoretical capacity of 372 mAh/g and the theoretical capacity of the graphene anode of 700 mAh/g. Beyond 100 cycles the discharge capacity for the graphite was 200 to 220 mAh/g and for the graphene 310 to 330 mAh/g. The testing processes included charging to 3V at 500 mA/g and discharging to 0.05V at 100 mA/g. SJC said that neither the graphene nor graphite was enhanced so the variations in the results have to be additionally tested.

Graphene joins forces with gold to enable improved neural probes

Apr 20, 2017

Researchers from the Daegu Gyeongbuk Institute of Science & Technology in Korea have used graphene to develop neural probes that are small, flexible and read brain signals clearly.

The probe consists of an electrode, which records the brain signal. The signal travels down an interconnection line to a connector, which transfers the signal to machines measuring and analyzing the signals. The electrode starts with a thin gold base. Attached to the base are tiny zinc oxide nanowires, which are coated in a thin layer of gold, and then a layer of conducting polymer called PEDOT. These combined materials increase the probe's effective surface area, conducting properties, and strength of the electrode, while still maintaining flexibility and compatibility with soft tissue.

HKG plans to manufacture cars with graphene-enhanced batteries

Apr 20, 2017

China's Hybrid Kinetic Group, a producer of lithium-ion batteries and hybrid vehicles, announced its aim to build car assemblies in three to five locations across China, with an initial production capacity of 300,000 units within three years, eventually expanding the capacity to 1 million units. While not many details were given, it was said that some of the models are to be powered by a 30 kilowatt battery using graphene with a 60 kw micro turbine power generator that theoretically can extend the battery’s range to 1,000 kilometers on each charge.

HKG's car with graphene battery imageThe H600 prototype by HKG

HKG is using US technology, and has commissioned designs by the Mahindra Group’s design studio Pininfarina. The company stated that “expansion of the production will depend on the market reactions”. and that “negotiations with car part makers are going on smoothly.”

MIT team uses graphene as a "copy machine" for semiconductors

Apr 20, 2017

Researchers at MIT have developed a technique that uses graphene as a kind of “copy machine”, to transfer intricate crystalline patterns from an underlying semiconductor wafer to a top layer of identical material.

Graphene as intermediary for semiconductors image

As a great deal of money is spent in the semiconductor industry on wafers that serve as the substrates for microelectronics components, which can be turned into transistors, light-emitting diodes etc., this method may help reduce the cost of wafer technology and enable devices made from more exotic, higher-performing semiconductor materials than conventional silicon.

A new graphene center opened in Beijing, China

Apr 19, 2017

A graphene industry innovation center was recently established in Beijing, China. The center aims to become a world-class graphene composite technology research and industrial incubator hub.

Beijing Graphene Industry Innovation Center will take the advantage of Beijing's innovative resources to research and develop cutting-edge new materials. It hopes to speed up the transformation of scientific research achievements and enhance the graphene industry.

Non-flammable graphene oxide membrane developed for safe mass production

Apr 19, 2017

Researchers at the University of Arkansas have demonstrated a simple and scalable method for turning graphene oxide into a non-flammable and paper-like graphene membrane that can be used in large-scale production. This tackles the issue of high flammability, which has, according to the team, been an obstacle to further development and commercialization.

Using metal ions with three or more positive charges, the researchers bonded graphene-oxide flakes into a transparent membrane. This new form of material is flexible, nontoxic and mechanically strong, in addition to being non-flammable. Further testing of the material suggested that crosslinking, or bonding, using transition metals and rare-earth metals, caused the graphene oxide to possess new semiconducting, magnetic and optical properties.

G3 and Lanka Graphite enter agreement to develop graphene-enhanced products

Apr 19, 2017

Global Graphene Group (G3), a holding company for subsidiaries like Angstron Materials, has signed Heads of Agreement with Lanka Graphite, a graphite exploration company. The joint venture entity (LGR 50%, G3 50%) will develop a range of commercial graphene projects.

G3 is reportedly scaling a broad range of commercial platforms of graphene applications in several , areas like energy storage, coatings, and thermal management. Lanka Graphite will supply vein graphite product into the joint venture in addition to assisting with sourcing investment, marketing and administration. G3 proposes to supply its experience in developing IP and research grants, commercialization planning and manufacturing infrastructure.