Researchers design ultra-thick 3D graphene frameworks for high-performance flexible micro-supercapacitors

A group of researchers, led by Prof. WANG Zhenyang from the Institute of Solid State Physics of the Hefei Institutes of Physical Science (HFIPS), has reported a novel graphene-based method to prepare high-performance supercapacitors with ultra-high energy storage density.

Improved laser inducing growth process of ultra-thick 3D graphene frameworks with hierarchical pores imageSchematic illustration for the improved laser inducing growth process of ultra-thick 3D graphene frameworks with hierarchical pores. (Image by CAS)

The team explained that constructing 3D graphene frameworks with ultra-thickness and rich ion transport paths is of great significance for the practical application of graphene supercapacitors. However, in thicker electrodes, the overall energy storage capability is limited by insufficient delivery of ions to the electrode material surface and the poor electron transport properties.

Read the full story Posted: Nov 11,2020

Graphene-Info updates all its graphene market report

Today we published new versions of all our graphene market reports. Graphene-Info provides comprehensive niche graphene market reports, and our reports cover everything you need to know about these niche markets. The reports are now updated to October 2020.

Graphene batteries market report 3D cover

The Graphene Batteries Market Report:

  • The advantages using graphene batteries
  • The different ways graphene can be used in batteries
  • Various types of graphene materials
  • What's on the market today
  • Detailed specifications of some graphene-enhanced anode material
  • Personal contact details into most graphene developers

The report package provides a good introduction to the graphene battery - present and future. It includes a list of all graphene companies involved with batteries and gives detailed specifications of some graphene-enhanced anode materials and contact details into most graphene developers. Read more here!

Read the full story Posted: Oct 07,2020

Graphene-Info updates all its graphene market report

Today we published new versions of all our graphene market reports. Graphene-Info provides comprehensive niche graphene market reports, and our reports cover everything you need to know about these niche markets. The reports are now updated to July 2020.

Graphene batteries market report 3D cover

The Graphene Batteries Market Report:

  • The advantages using graphene batteries
  • The different ways graphene can be used in batteries
  • Various types of graphene materials
  • What's on the market today
  • Detailed specifications of some graphene-enhanced anode material
  • Personal contact details into most graphene developers

The report package provides a good introduction to the graphene battery - present and future. It includes a list of all graphene companies involved with batteries and gives detailed specifications of some graphene-enhanced anode materials and contact details into most graphene developers. Read more here!

Read the full story Posted: Jul 13,2020

Researchers develop a novel graphene-vanadium flexible hybrid battery/supercapacitor

Researchers at the Graphene Integrated Functional Technologies (GIFT) Research Cluster at Queen’s University in Canada have developed a novel graphene-based flexible hybrid batterysupercapacitor device.

Structure of the hybrid battery/supercapacitor image

The device consists of high specific surface area electrodes paired with an electrolyte, which contains a redox species that can exist in more than two oxidation states. The two initially equal half-cells of the device consist of a reduced graphene oxide hydrogel which encapsulates vanadium ions, synthesized with a single-step method.

Read the full story Posted: May 24,2020

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.

Read the full story Posted: May 18,2020

Korean team develops re-attachable sticker-type micro-supercapacitors with graphene electrodes

A joint research team from Korea Institute of Energy Research (KIER), KAIST, Pusan National University (PNU) and NTU has developed a high-performance re-attachable sticker-type energy storage device. The team developed 're-attachable micro-supercapacitors (MSCs) using highly swollen laser-induced-graphene electrodes.

MSCs are thin-film based ultra-thin supercapacitors that are getting much attention as they are more stable with higher power and energy densities compared to Li thin-film batteries.

Read the full story Posted: Apr 14,2020

Graphene-Info updates all its graphene market report

Today we published new versions of all our graphene market reports. Graphene-Info provides comprehensive niche graphene market reports, and our reports cover everything you need to know about these niche markets. The reports are now updated to April 2020.

Graphene batteries market report 3D cover

The Graphene Batteries Market Report:

  • The advantages using graphene batteries
  • The different ways graphene can be used in batteries
  • Various types of graphene materials
  • What's on the market today
  • Detailed specifications of some graphene-enhanced anode material
  • Personal contact details into most graphene developers

The report package provides a good introduction to the graphene battery - present and future. It includes a list of all graphene companies involved with batteries and gives detailed specifications of some graphene-enhanced anode materials and contact details into most graphene developers. Read more here!

Read the full story Posted: Apr 07,2020

Significant Market Opportunities for Graphene in Energy Storage

This is a sponsored post by Dr. Alex Holland, IDTechEx

Graphene has been heralded as a wonder material for years, with many believing a tipping point is rapidly approaching. It undoubtedly has the potential for use in numerous applications with one of the most notable being the energy storage market. Li-ion demand for plug-in electric cars alone is forecast to be nearly 350 GWh by 2025. IDTechEx forecasts that over 30% of the graphene market will be used in energy storage applications within the next decade with multiple high-profile use cases; see IDTechEx’s reports Li-ion Batteries 2020-2030, and Graphene, 2D Materials and Carbon Nanotubes 2019-2029 for more details.

Graphene market forecast (2020-2029, energy storage vs other applications, IDTechEx)
One of the most significant technological developments in energy storage regards the use of silicon dominant anodes in Li-ion batteries. The theoretical capacity of silicon is around 10x that of graphite and has therefore been the topic of intense activity in the Li-ion market - Over $500 million has been invested in silicon anode start-ups alone since 2015. However, the material is plagued by one major issue: when lithiated, it can expand in volume by 300%. This causes various issues around loss of electrical connection between electrode particles and decomposition of the electrolyte, which ultimately leads to poor cycle life.

Read the full story Posted: Mar 31,2020

Graphene Flagship partners produce environmentally-friendly graphene inks

Graphene Flagship partners Trinity College Dublin, Ireland, CIC EnergiGUNE and INCAR-CSIC, Spain, have produced rechargeable batteries and energy storage devices made of a non-toxic and environmentally friendly graphene-based material.

High performance Na-O2 batteries and printed microsupercapacitors based on water-processable graphene image

With current metal-ion batteries reaching their theoretical limitations in terms of cycle life, capacity and power, researchers focused on metal-air alternatives, such as sodium-air (Na-O2) batteries.

Read the full story Posted: Mar 11,2020

Tuning the interlayer spacing of graphene laminate films yields extremely efficient supercapacitors

Scientists from University College London and the Chinese Academy of Sciences have proposed a graphene-based design for supercapacitors, which reportedly increased their density by 10 times.

Supercapacitors charge quickly but also discharge at a high speed. Existing supercapacitors tend to have a low energy density about 1/20 of the battery capacity. Batteries combined with supercapacitors are already in limited use for example, in Chinese public transport. But the bus in which such a battery is installed is forced to charge at almost every stop.

Read the full story Posted: Feb 21,2020