Skip to content
Surprising Science

Will Graphene Replace Batteries?

An alternative to batteries gets an advance from tiny, crumpled sheets of graphene, whose electrodes can store more charge because they have larger surface areas.

Ultracapacitors, energy-storage devices that absorb and release charge in minutes, could be a rapid-charging, cheaper, and safer alternative to batteries for electric cars. But commercial ultracapacitors can hold just 5 percent of the energy of lithium-ion batteries, providing short power bursts that limit them to uses such as acceleration in hybrid buses. Researchers at Nanotek Instruments in Dayton, Ohio, have now made graphene electrodes that could lead to ultracapacitors with more than five times the energy density of commercial devices.


Related
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam id tincidunt mi. Morbi malesuada nulla sit amet est hendrerit tincidunt. Etiam viverra, nisl id volutpat eleifend, est augue sodales orci, […]

Up Next
The announcement that Susan Philipsz had won the Turner prize—Britain’s most embattled arts prize—was rendered almost inaudible by the chants and whoops of student protesters.