Graphene supercapacitors are moving from lab curiosity to serious contender for the next wave of electric vehicle energy ...

Hybrid "power capacitors" that can store as much energy as lithium batteries, but with much higher charge/discharge rates, a huge range of safe operating temperatures, super-long lifespans and no risk ...

Energy-storage devices called capacitors deliver power rapidly, but the amount of energy they can absorb is limited. Deliberately disordered electric dipoles in ‘antiferroelectric’ capacitor materials ...

Berkeley Lab scientists create microcapacitors with ultrahigh energy and power density. The microcapacitors are made with engineered thin films of hafnium oxide and zirconium oxide. The technology ...

How to build a photovoltaic light system that operates at all times and is maintenance-free. The key role of the supercapacitor in this design. What is the "Joule Thief" circuit? Delivering ...