Two-dimensional carbon “paper” can form stretchable
supercapacitors to power flexible electronic devices.
When someone crumples a sheet of paper, that usually means
it’s about to be thrown away. But researchers have now found that crumpling a piece
of graphene “paper” — a material formed by bonding together layers of the
two-dimensional form of carbon — can actually yield new properties that could
be useful for creating extremely stretchable supercapacitors to store energy
for flexible electronic devices.