Many battery scientists are interested in the potential of lithium sulfur batteries because, at least in theory, they offer a high energy density at relatively low cost. However, lithium sulfur batteries face a number of challenges, including the low electrical conductivity of sulfur and the tendency of the cathode to expand significantly in size during the discharge cycle—a tendency that prevents the cathode material from being packed as densely in the battery as scientists would like.
Graphene Flagship scientists, led by researchers at ICFO – The Institute of Photonic Sciences in Barcelona, Spain, have detected graphene’s out-of-plane heat transfer in van der Waals heterostructures. In their paper published in Nature Nanotechnology they follow this process in real-time. This phenomenon has many implications for optoelectronic devices.
Rechargeable aluminum-ion batteries are promising in high-power density but still face critical challenges of limited lifetime, rate capability, and cathodic capacity. The authors design a “trihigh tricontinuous” (3H3C) graphene film cathode with features of high quality, orientation, and channeling for local structures (3H) and continuous electron-conducting matrix, ion-diffusion highway, and electroactive mass for the whole electrode (3C).
It may be possible to engineer the nanoscale-patterned semiconductor material to produce exotic electronic properties. The research, at the engineering department of Columbia University in New York City, centred around an attempt to reproduce the electronic structure of graphene in a synthetic semiconductor device.
Researchers from the Siberian Federal University (SFU), the Krasnoyarsk Research Center at the Siberian Division of the RAS, and the National University of Science and Technology MISIS have reported graphene-enhanced rechargeable lithium-ion batteries with double the capacity. To do so, they created anodes with graphene and vanadium disulfide.
In a successful collaboration between the Graphene Flagship and the European Space Agency, experiments testing graphene for two different space-related applications have shown extremely promising results. Based on these results, the Flagship are continuing to develop graphene devices for use in space.
Elcora Advanced Materials has announced the development of graphene-infused lithium-ion batteries for fast charge applications.
Elcora states that its expertise in graphene and lithium-ion battery technology will assist in this project, and that it is presently working with strategic partners (as well as in its in-house Lithium-Ion R&D Battery Lab) in development of applications.
Herein, graphite fibres were prepared from polyimide (PI) fibres by doping varying contents of graphene oxide (GO) into polyimide (PI) fibres through a carbonization and graphitization process. By in situ polymerization, GO/polyamic acid (PAA) was synthesized and used for preparing GO/PI fibres via dry-jet wet spinning.
Elecjet has created a new graphene-based fast charging USB-C battery pack which has been launched via Kickstarter this week and is capable of being charged from flat to full in 20 minutes. Watch the demonstration video below to learn more about the battery pack …
A group of researchers at Technical University of Denmark, National Physics Laboratory in UK and Spanish Graphenea, explain in a recent review paper why the graphene industry needs better and faster electrical characterisation methods.