Graphene Oxide News
Researchers from Rice University developed a new chemical process that is used to create a tough, ultra-light foam in any size and shape. The new foam (called GO-0.5BN) is made from two 2D materials: graphene oxide and hexagonal boron nitride (hBN) platelets.
This foam can be used as structural component in applications such as electrodes for supercapacitors and batteries and gas absorption material.
Graphene Oxide can turn into liquid crystal droplets, may lead to drug delivery systems and bio-sensors
Researchers from Monash University discovered that graphene oxide flakes can spontaneously change their structure - to become liquid crystal droplets, in the presence of an external magnetic field. This could be very useful for applications such as drug delivery and disease detection.
It's common for current drug delivery systems to use magnetic particles - useful for drug release. But most magnetic particles are toxic in some conditions. Now the researchers hope that the new graphene discovery means it can be a better system than what's available today.
SiNode and Merck's AZ Electronic Materials to co-develop graphene-based materials for Li-Ion batteries
SiNode Systems signed a joint-development agreement with Merck's AZ Electronic Materials with an aim to commercialize graphene-based materials for lithium-ion batteries. The two companies will develop electrode materials that deliver high energy density and improved rate capabilities - to enable Li-Ion batteries that last longer and charge faster.
SiNode, established in 2013 to commercialize a novel anode Li-ion battery technology developed at Northwestern University, developed a composite material of silicon nano-particles and graphene in a layered structure. The company says that their material will enable 10 times higher battery capacity and a tenfold decrease in charging time compared with current technology. The company is now expanding its R&D and pilot manufacturing facility in Chicago.
Researchers from Canada's University of Saskatchewan are investigating how to use Graphene Oxide in solar-cell electrodes. According to their experiments, GO is indeed less conductive than pure graphene, but it is more transparent and it is a better charge collector.
The researchers modeled graphene oxide, for the first time with real complexity, and showed that previous models were incorrect. Their resreach also showed how heated water touching the GO film can burn it and produce carbon dioxide - which could be risky in solar cells.
Abalonyx announced that it entered into a partnership with Kongsberg Innovasjon for both engineering support and an investment that will enable Abalonyx to start mass producing graphene oxide materials. Kongsberg Innovasjon will purchase a 21.5% stake in Abalonyx.
Since 2012, Abalonyx had a pilot production line, used to produce GO samples and verify the scalability and safety of its process. The two companies are now developing a new facility (in south east Norway) that will start production in Q3 2014 with a capacity of 8 tons/year.
Researchers say Graphene Oxide is probably not toxic as humans have been eating GO flakes for thousands of years
Researchers from India verified that when you barbecue meat, it produces all sorts of carbon nanoparticles, including graphene oxide. This led them to the conclusion that GO is probably safe to eat - as humans have been eating barbecued meat for thousands of years.
When meat is heated, the proteins undergo pyrolysis, which produces graphene oxide sheets and carbon nanoparticles via the condensation of five- and six-membered rings. Some of these particles are doped with nitrogen from the atmosphere, and GO is formed when plant matter is charred. GO is also present in several medicines such as gripe water and active coal powders.
Researchers from Australia's Anstro institute and Deakin University developed an efficient method to prepare porous and reduced graphene oxide. They say that this one-step, catalyst-free, high penetration and through-put technique offers for the first time a significant advantage over previously reported graphene oxide (GO) solution reduction mechanisms.
The new technique, which uses gamma irradiation, maintains the naturally densely packed morphology of GO bucky-papers without causing the dramatic exfoliation of the graphene layers caused by chemically reduced routes.