Graphene/perovskite nanosensor detects nitrogen dioxide with 300% improved sensitivity

A research team led by Juan Casanova and Eduard Llobet from the Departamento de Ingeniería Electrónica, Eléctrica y Automática at the Universitat Politècnica de València (URV), used graphene and perovskites to create a nanosensor that detects nitrogen dioxide with 300% improved sensitivity.

The team used graphene that is hydrophobic (water and moisture-resistant) and sensitive in gas detection, but with some limitations: it is not very selective and its sensitivity declines over time. In addition, the researchers used perovskites, a crystalline-structure material commonly used in the field of solar cells. However, they quickly deteriorate when they are exposed to the atmosphere. That's the reason why the team decided to combine perovskites with a hydrophobic material able to repel water molecules - in order to prove they can prevent or slow down their deterioration.

KIST researchers develop stretchable graphene-based lithium-ion battery

A research team from the Korea Institute of Science and Technology (KIST) recently developed a graphene-based lithium-ion battery that is flexible enough to be stretched.

Schematic diagram of stretchable battery manufacturing process image

Dr. Jeong Gon Son's research team at the Photo-Electronic Hybrids Research Center at the Korea Institute of Science and Technology (KIST) developed the high-capacity, stretchable lithium-ion battery. The battery was developed by fabricating a structurally stretchable electrode consisting solely of electrode materials and then assembling it with stretchable gel electrolyte and stretchable packaging.

First Graphene and Foster Plastics Industries to commence testing on EVA products

First Graphene logo imageFirst Graphene (FGR) has reported that Foster Plastics Industries, an Australian extrusion company, is collaborating with FGR to develop PureGRAPH-enhanced ethylene-vinyl acetate (EVA) materials for use in Foster’s range of solar tubes and plastic extrusion systems.

The PureGRAPH 10 EVA masterbatch loaded with 30% graphene will be drawn down to the desired ultimate concentration of 0.25% to 1% within Foster’s proprietary black nitrile/PVC compound.

Researchers demonstrate the laser-propulsion of graphene sails in microgravity

ESA-backed researchers from Delft University of Technology in the Netherlands and SCALE Nanotech in Estonia have demonstrated the laser-propulsion of graphene sails in microgravity.

As demonstrated first by JAXA's mission IKAROS (2010) and recently by The Planetary Society's LightSail 2 (2019), using light sails as propulsion system is among the most promising ideas to enable fast and affordable space trips. Not only sails do not require fuel to move, but they save its corresponding costly weight and that of its containing tanks.

planarTECH's graphene crowdfunding campaign reaches 100%, investors are still welcome to participate

UK-based planarTECH has recently launched an equity crowdfunding campaign on Seedrs, as part of Graphene-Info's Graphene Crowdfunding Arena. We are happy to announce that the campaign reached 100% funding today. You can still take part in this exciting campaign, as PlanarTECH still accepts new investors via Seedrs.

PlanarTECH supplies Chemical Vapor Deposition (CVD) systems for the growth of graphene, and has already installed over 65 systems worldwide, to customers such as the University of Manchester, the University of Cambridge, Stanford University and the National University Singapore.

MIT team finds ‘twisted’ graphene getting weirder at ‘magical angle’

Researchers at the Massachusetts Institute of Technology (MIT) have previously found a particularly strange pattern in the “twisted” graphene structure, and now they’ve studied it more closely and found that the more layers it has, the better it will work.

Graphene is a 2D carbon nanomaterial consisting of a hexagonal hexagonal grid of a hexagonal structure of carbon atoms with a sp2 hybrid orbit. This makes them functionally two-dimensional, because the electrons that move through them can only move forward/backward and sideways, not above and below. This makes graphene very conductive.

Honor 10X to sport graphene cooling system

It has been reported that Honor will introduce the Honor X10 at the end of this month, and that it will feature a graphene-based cooling system.

The phone is expected to be the cheapest 5G model to come from Huawei, so it may get a little warmer than regular smartphones. Thanks to the graphene-based cooling system, the phone will have better heat protection.

Russian scientists find that defects in graphene can significantly increase charge transfer rate

Scientists from the Moscow Institute of Physics and Technology, Skoltech, and the Russian Academy of Sciences Joint Institute for High Temperatures have conducted a theoretical study of the effects of defects in graphene on electron transfer at the graphene-solution interface. Their calculations show that defects can increase the charge transfer rate by an order of magnitude.

Defects in graphene can increase the charge transfer rate by an order of magnitude image

Moreover, by varying the type of defect, it is possible to selectively catalyze the electron transfer to a certain class of reagents in solution. This can prove very useful for creating efficient electrochemical sensors and electrocatalysts.