reduced graphene oxide

Researchers develop rGO-enhanced structural supercapacitors

Researchers from the University of California San Diego and the University of Southern Mississippi recently designed a graphene-enhanced structural supercapacitor. Structural supercapacitors hold promise to expand the energy capacity of a system by integrating load-bearing and energy-storage functions in a multifunctional structure, resulting in weight savings and safety improvements. 

As a proof of concept, the researchers used their structural supercapacitor to build a miniature solar-powered boat. The supercapacitor was molded to form the boat’s hull and then fitted with a small motor and circuit. The circuit was connected to a solar cell. When exposed to sunlight, the solar cell charges the supercapacitor, which in turn powers the boat’s motor. In tests, the boat was able to cruise across the water, demonstrating the efficacy of this innovative energy storage solution.

Read the full story Posted: Oct 06,2023

Researchers design rGO-based nerve gas sensor using human scent receptors

Researchers from Seoul National University and Samsung Electronics have developed a sensitive and selective nerve gas sensor using human scent receptors. It reliably detected a substitute for deadly sarin gas in simulated tests.

Nerve gases are often very potent, requiring highly sensitive sensors to detect them quickly and accurately. One method of boosting sensitivity combines human scent receptors with nanomaterials such as reduced graphene oxide to create a "bioelectronic nose." But since these nerve gases are still highly dangerous even in laboratory settings, many scientists rely on safer, substitute molecules instead. In the case of the sarin or soman nerve agents, dimethyl methylphosphonate (DMMP) is a common replacement. Previously, the receptor protein hOR2T7 has been used to detect DMMP, but it could only do so when the nerve agent substitute was in a liquid form, rather than as a gas. So, the research team wanted to design a "nose" of their own that was both highly sensitive and selective for the gaseous form, using nanodiscs containing the hOR2T7 receptor.

Read the full story Posted: Aug 12,2023

Researchers develop rGO-based approach to address oil-water separation challenges

Researchers from Qatar University (QU), Maimoona Mohamed and Nada Yahya Deyab, along with their supervisor Dr. Shabi Abbas Zaidi, have made progress in addressing the challenge of oil-water separation.

Their research focuses on developing a novel material for efficient oil recovery from oil-water mixtures. By modifying polyurethane (PU) sponges and cotton with reduced graphene oxide (rGO), they have achieved promising results in terms of hydrophobicity, oil-absorption efficacy, reusability, and cost-effectiveness, offering a promising solution to address the issue of water and soil pollution caused by oil spills.

Read the full story Posted: Jul 18,2023

Graphene-Info updates its Graphene Oxide Market Report

Today we published a new edition of our Graphene Oxide Market Report, with all the latest information, including both new research activities. Our market report is a comprehensive guide to graphene oxide (and r-GO) materials and their promising applications in energy storage, composite materials, bio-medical, water treatment and more.

Reading this report, you'll learn all about:

  • The difference between graphene oxide and graphene
  • Graphene oxide properties
  • Possible applications for graphene oxide
  • Reduction of graphene oxide to r-GO

The report package also provides:

  • A list of prominent GO research activities
  • A list of all graphene oxide developers and their products
  • Datasheets for over 20 different GO materials
  • Free updates for a year

This Graphene Oxide market report provides a great introduction to graphene oxide materials and applications, and covers everything you need to know about GO materials on the market. This is a great guide for anyone interested in applying graphene oxide in their products.

Read the full story Posted: Jul 14,2023

LayerOne and SINTEF collaborate on graphene-based conductive inks project

LayerOne (formerly  Abalonyx) and SINTEF  (a Norway-based research institute) have secured funding from The Norwegian Research Council for the development of innovative, scalable and sustainable conductive inks based on reduced graphene oxide (rGO). The rGO-based inks promise improved electrical conductivity and stability surpassing traditional carbon-based inks and offering a less toxic and more cost-effective alternative to metal-based inks.

The research project is a result of LayerOne’s recent breakthrough in developing a new grade of rGO with an electrical conductivity two orders of magnitude greater than standard rGO grades. In the project, LayerOne will supply the advanced rGO materials while SINTEF will leverage and build on its experience from recently concluded projects on printed electronics to develop the new conductive inks.

Read the full story Posted: Mar 29,2023

HydroGraph signs LOI for a graphene-batteries project with CGT and LOLC

HydroGraph Clean Power, manufacturer of graphene and other nanomaterials, has announced a letter of intent (LOI) to form a partnership with Ceylon Graphene Technologies (CGT) via LOLC Advanced Technologies (LOLC AT), which owns a majority share of CGT through a joint venture with Sri Lanka Institute of Nanotechnology (SLINTEC).

The partnership will center around a novel composite graphene blend that is said to improve the charge acceptance of lead acid batteries by 47%. HydroGraph and LOLC AT agreed to commercialize this product and pursue the lead acid battery market, projected to be worth more than $47 billion by 2030, driven in part by electric vehicle dependency on the product.

Read the full story Posted: Mar 14,2023

Researchers create cell plasma inspired rGO membranes for LiS batteries

Researchers from Australia's Monash University and CSIRO Manufacturing have designed a permselective membrane based on reduced graphene oxide (rGO) for making practical lithium-sulfur batteries. 

The membrane closely mimics a cell plasma membrane, demonstrating selective Li+ transport and the ability to not only retain polysulfides, but also 're-activate' them on the membrane's electrochemically active interface. The team used the membrane to demonstrate high loading and high rate Li-S batteries, also on a pouch cell level.

Read the full story Posted: Dec 19,2022

Researchers develop rGO-based material for improved Li-S batteries

Researchers at South China Normal University, Soochow University, Nanjing Tech University and  Macau University of Science and Technology have reported a new difunctional Li-S battery separator (CC-rGO/AB/PP) derived from a novel synthesis method under extreme pressure to promote more efficient Li-S batteries in a simple way.

Lithium-sulfur (Li-S) batteries theoretically have energy capacity far beyond lithium-ion batteries and have thus attracted much attention. However, the actual lifespan and conversion efficiency are significantly reduced by the shuttle effect in which lithium polysulfides (LiPSs) dissolve and penetrate to the anode during discharge and cause internal short-circuit. Although there are techniques to suppress the shuttle effect by the separator, most of them still have to sacrifice other performance indicators, such as the ability of lithium-ion transportation.

Read the full story Posted: Dec 12,2022

Researchers use graphene nanobuds as a novel anode material for lithium ion batteries

Researchers from Tecnologico Nacional de México, McGill University and Centro de Investigacion en Materiales Avanzados S.C. have examined the use of Graphene nanobuds (GNBs), formed on copper (Cu) foil via chemical vapor deposition, as an anode in lithium-ion batteries.

Graphene Nanobuds as LIB anode material image

Producing high-performance anode materials that possess excellent specific capacities and extended cyclic ability is currently one of the key development areas in lithium-ion batteries. The energy storage capacity of lithium-ion batteries heavily depends on the anode materials used and their structure. Carbonaceous substances remain the anode materials of choice because of the strong attraction between lithium (Li) and graphitic carbon. Graphene possesses a large capacity to accommodate lithium ions in its framework because of its significant surface area and excellent electrical conductivity.

Read the full story Posted: Jul 16,2022

Researchers assess health hazards of graphene-enhanced composites

An international research team of the Graphene Flagship project, led by Empa, has conducted a study on the health risks of graphene-containing nanoparticles and found that graphene-based particles released from polymer composites after abrasion induce negligible health effects.

Flagship team sets out to assess health hazards of graphene image

Graphene-related materials (GRMs) are often used to reinforce polymers. In small concentrations of up to five weight percent, GRMs can significantly enhance the strength, electrical conductivity and thermal transport of composites for a variety of applications. However, being a relatively new set of materials, graphene and GRMs need to be carefully assessed in order to identify potential adverse effects prior commercialization.

Read the full story Posted: Jun 17,2022