As future batteries, hybrid supercapacitors are super-charged
Jun 20, 2018
A newly discovered supercapacitor has the highest energy density of any comparable system as demonstrated by a team of Molecular Foundry users and staff. These ultracapacitors can be charged and discharged repeatedly. The ...
Nickel ferrite promotes capacity and cycle stability of lithium-sulfur battery
Jun 13, 2018
Lithium-sulfur (Li-S) battery could become practical if 20 percent of the theoretical energy densities (2600 Wh/kg or 2800 Wh/L) can be achieved. Investigators have the ambition to reach energy density of 500 Wh/kg in the ...
Milestone for next-gen solid-state batteries to power future long-range electrical vehicles
Apr 10, 2018
Imec, the world-leading research and innovation hub in nanoelectronics, energy and digital technologies and partner in EnergyVille, has fabricated an innovative type of solid-state Li-ion battery achieving an energy density ...
Aqueous storage device needs only 20 seconds to go
Mar 01, 2018
A KAIST research team has developed a new hybrid energy storage device that can be charged in less than a half-minute. It employs aqueous electrolytes instead of flammable organic solvents, so it is both environmentally friendly ...
Harnessing the power of algae—new, greener fuel cells move step closer to reality
Jan 10, 2018
A new design of algae-powered fuel cells that is five times more efficient than existing plant and algal models, as well as being potentially more cost-effective to produce and practical to use, has been developed by researchers ...
Renaissance of the iron-air battery
Nov 17, 2017
Iron-air batteries promise a higher energy density than present-day lithium-ion batteries. Their main constituent, iron, is an abundant and cheap material. Scientists from Forschungszentrum Jülich are pursuing research into ...
Paper supercapacitor addresses power/energy density tradeoff
Sep 27, 2017 feature
By coating ordinary paper with layers of gold nanoparticles and other materials, researchers have fabricated flexible paper supercapacitors that exhibit the best performance of any textile-type supercapacitor to date. In ...
Localized orbital scaling correction functional ushering DFT to a new level of accuracy
Sep 14, 2017
Kohn-Sham density functional theory is one of the most successful theories in chemistry. It is formally rigorous; its relatively low computational cost and competitive accuracy in small and medium-sized systems make it one ...
Watches, LEDs powered by yarn battery
Aug 25, 2017 feature
(Phys.org)—Researchers have fabricated rechargeable batteries by using highly conductive yarns that have a diameter and flexibility similar to that of a piece of cotton yarn. The new yarn battery can be woven into fabric ...
Engineers produce long lasting, energy density battery
Aug 01, 2017
A new generation of manganese dioxide-zinc batteries with unprecedented cycle life and energy density is the latest innovation at The City College of New York-based CUNY Energy Institute. The discovery has made the common ...