Graphene could replace ITO in OLED displays

In a new UK-funded research, scientists from Paragraf and Queen Mary University of London have successfully fabricated an Organic Light-Emitting Diode (OLED) with a monolayer graphene anode instead of the problematic ITO.

Graphene could replace rare metal used in mobile phone screens imageGraphene OLED. Sapphire substrate/monolayer graphene/NPB: 50 nm/Alq3: 50 nm/LiF: 1.5 nm/Al: 100 nm. Image from study in AOM

Professor Colin Humphreys of Queen Mary and Paragraf, says: “Because of its importance and scarcity there have been many attempts to replace ITO, but no material has been found to have a comparable performance in an electronic or optical device until now. Our paper is the first paper in the world to demonstrate that graphene can replace ITO in an electronic/optical device. We have shown that a graphene-OLED has identical performance to an ITO-OLED. ITO-OLEDs are widely used as the touch screens on our mobile phones.”

realme uses graphene-based cooling tech in its new GT 2 mobile phone series announced in China

realme has announced its new GT 2 series, marking the company’s first steps into the premium segment. The GT 2 series, equipped with various top-notch gear and AMOLED panels, is also said to be sporting a graphene-based cooling system.

realme announces new phones with graphene cooling image

As is the case with various other mobile phones and gadgets by the likes of Huawei and ZTE, the new GT 2 series will use a 3D liquid-cooled VC and graphene sheet cooling technology.

Graphene and hBN nano-additives improve eco-friendly lubricant oils

Researchers from the University of Nevada have investigated the introduction of graphene nanoplatelets (GNPs) and hexagonal boron nitride (hBN) to canola oil to improve its tribological properties, as part of an effort to reduce the usage of lubricants based on petroleum as lubricants for reducing abrasion and friction.

Three nanoscale lubricating combinations were created by combining both GNP and hBN settings in varied ratios to get the best beneficial synergy. The team reports that lubrication quality and performance may be increased by using low-weight percentages of nanoparticle (NP) and microparticle additions. One benefit is that it has a reduced coefficient of friction (COF) and wearing.

Talga and Mitsui collaborate on battery anode project

Battery and advanced materials company Talga is working with Mitsui & Co. Europe, a subsidiary of Mitsui, one of the largest global trading and investment companies based in Japan.

The MOU between the Companies, planned to take place until 31 August 2022, is based on the intent to advance potential co-development of Talga's Vittangi Anode Project in Sweden through a Joint Venture, and is expanded to include marketing, sales and partnership opportunities across Talga’s portfolio of lithium-ion battery products.

Graphene-Info's top 10 graphene applications of 2021

2021 has been a challenging year, globally, with the pandemic still not behind us, and a dramatic component shortage effecting many markets. The graphene industry, however, had an excellent year, with new products on the market and increased material production and adoption.

Here are 2021's top ten graphene applications, ranked by the references at Graphene-Info:

  1. Batteries
  2. Medicine
  3. Sensors
  4. Automotive applications
  5. Composites
  6. Supercapacitors
  7. Coating
  8. Textiles
  9. Electronics
  10. Construction materials

GMG sends graphene aluminium-ion batteries to customers for testing

Graphene Manufacturing Group (GMG) has announced that its graphene aluminium-ion batteries ("G+AI Battery") 2032 type coin cell prototypes have been sent to a number of prospective customers around the world.

GMG reports that coin cell testing to date has demonstrated that the GMG 2032 type G+AI Battery coin cell prototypes are fully rechargeable in several seconds, retain capacity for several thousand charge and discharge cycles, are non-flammable, and are relatively non-toxic and almost fully recyclable. These characteristics compare favorably against typical rechargeable Lithium-Ion 2032 type coin cells which take 3-6 hours to recharge, are toxic and can be quite harmful if ingested, are difficult to recycle, are flammable under certain conditions, and degrade more rapidly in performance.

Sparc Technologies reports successfull testing of graphene-enhanced epoxy coatings

In 2020 Sparc Technologies acquired Graphene Technology Solutions (GTS) and announced plans to become a “significant developer of graphene-based products".

Sparc announced today that after six months of testing, its graphene-based additives was found to offer up to 40% improvement in the anti-corrosive performance of atmospheric epoxy coatings. The company used commercially available epoxy coatings available from leading coatings manufacturers.