Supercapacitors

Researchers at NETL, a U.S. Department of Energy national laboratory, have developed a low-cost process for converting coal tar waste into high-quality graphene. The team stressed that the resulting can increase the performance of energy-storing supercapacitor systems by up to 55%.

Schematic illustration of the synthesis process of 3D graphene. Image from: Small Methods

According to NETL’s Christopher Matranga, one of the authors of the study, graphene has long been considered an ideal supercapacitor electrode material, but its use in commercial devices is limited because there are few methods for producing high-quality graphene at a large scale at a low cost.

The Victorian government’s AUD$1 million (around USD$650,000) Made In Victoria Energy Technologies Manufacturing program will be awarded to four Victorian businesses manufacturing renewable energy technology components and products. 

Aming recipients is graphene technologies company EnGy, which will use its grant to scale up graphene materials production.

Researchers at the Technical University of Liberec (Czech Republic) and Lodz University of Technology (Poland) have developed a silver/graphene flexible composite electrode using inkjet printing technology for high-performance supercapacitors. 

The scientists chose rGO as the primary material for the electrode active layer. The rGO active layer was in-situ printed and reduced on the polypropylene non-woven fabric, and silver nanoparticles were simultaneously inserted and reduced to increase the interlayer spacing of the rGO active layer, which effectively reduced the self-stacking effect of rGO and improved the overall electrochemical performance. 

Today we published a new edition of our Graphene Supercapacitors Market Report, with all the latest information. The supercapacitor market and industry is facing high demand and graphene is a pivotal material for this application.

Reading this report, you'll learn all about:

• The advantages of using graphene in supercapacitors
• Various types of graphene materials
• Market insights and forecasts
• What's on the market today

The report package also provides:

• A list of all graphene companies involved with supercapacitors
• Prominent research activity in this field
• Free updates for a year

This Graphene Supercapacitors market report provides a great introduction to graphene materials used in the supercapacitor market, and covers everything you need to know about graphene in this niche. This is a great guide for anyone involved with the supercapacitor market, nanomaterials, electric vehicles and mobile devices.

Researchers from Italy's Sapienza University of Rome, Portugal's International Iberian Nanotechnology Laboratory (INL), University of Minho and Universidade de Lisboa have developed a sustainable approach to produce an electrically conductive, graphene-based paste suitable for fabricating flexible devices such as microsupercapacitors (mSCs).

The new method enables the scalable, cost-effective, and environmentally friendly production of high-quality graphene materials, paving the way for advanced applications in energy storage and flexible electronics.

HydroGraph Clean Power has announced that its flagship graphene product, FGA-1, has been chosen by Volfpack Energy, a hardware company focused on using supercapacitor technology to increase the adoption of renewable energy across Asia. 

Its flagship product, fractal graphene, FGA-1, was chosen by Volfpack to be the base material of the supercapacitor design after Volfpack’s engineers determined that it outperformed materials traditionally used in supercapacitors, such as activated carbon, by 4x.

Researchers from Pohang University of Science and Technology (POSTECH), Korea Institute of Industrial Technology and Konkuk University have reported the development of a small-scale energy storage device capable of stretching, twisting, folding, and wrinkling. 

Nine MSC units connected in three parallel and three series. Image from npj Flexible Electronics

Micro supercapacitors (MSCs) have emerged as a promising candidate for deformable energy storage, due to high-power density, rapid charging, and long cycle life. However, the fabrication of interdigitated electrode patterns capable of maintaining the energy storage performance under repeated stretching and twisting has remained a great challenge, because brittle materials like gold (Au) have been commonly used as an electrode.

Today we published a new edition of our Graphene Supercapacitors Market Report, with all the latest information. The supercapacitor market and industry is facing high demand and graphene is a pivotal material for this application. This new update includes many updates from various projects and research activities 

Reading this report, you'll learn all about:

• The advantages of using graphene in supercapacitors
• Various types of graphene materials
• Market insights and forecasts
• What's on the market today

The report package also provides:

• A list of all graphene companies involved with supercapacitors
• Prominent research activity in this field
• Free updates for a year

This Graphene Supercapacitors market report provides a great introduction to graphene materials used in the supercapacitor market, and covers everything you need to know about graphene in this niche. This is a great guide for anyone involved with the supercapacitor market, nanomaterials, electric vehicles and mobile devices.

Researchers from Pohang University of Science and Technology (POSTECH), Korea Institute of Industrial Technology and Konkuk University have fabricated highly deformable graphene-based micro supercapacitors (MSCs) using liquid metal current collectors on an elastic polymer substrate.

a Illustration of an integrated system comprising soft-electronics and deformable energy storage component. b The fabrication process of EGaIn-based MSC. c UV-vis spectra of SEBS, EGaIn, and graphene. FE-SEM images of laser ablated d Graphene/EGaIn and e EGaIn (Scale bar = 200 µm). Photographs of f institute logos, g deformed logos, and h an LED connected to the MSC circuit (Scale bar = 1 cm). (Image from npj Flexible Electronics)

The team used eutectic gallium-indium (EGaIn), a liquid metal alloy, as the current collector since a deformable current collector is needed in order to create a deformable MSC. Commonly used current collectors made of brittle materials like gold (Au) are not suitable in this case, so the team turned to 'liquid metal' that inherently possesses the properties of a liquid and metallic conductivity.

Researchers from China University of Petroleum (East China), Henan Agricultural University and Chinese Academy of Sciences have developed an additive-free 3D printing process to construct graphene micro-supercapacitors (MSCs) with unprecedented electrochemical properties and seamless integrability. The team states that this achievement overcomes existing manufacturing limitations and brings closer the on-chip MSC arrays essential for the next generation of wearables.

Wearable devices require ever-smaller on-board energy solutions that can deliver bursts of power while remaining unobtrusive. Rigid coin batteries restrict device flexibility and ergonomics. Leading microscale alternatives include micro-supercapacitors (MSCs), which store and discharge energy rapidly owing to highly porous electrode materials interfacing with electrolytes. Supercapacitors’ quick charge ability and resilience to repeated charging cycles make them appealing to supplement batteries. However, difficulties producing intricately designed MSC devices that also offer high performance have confined MSCs to the lab. Conventional manufacturing techniques often lack suitable precision, flexibility, and scalability.