Using millions of tiny fibers of nanocellulose sheathed with a
conductive polymer coating, scientists have created sheets of paper that
can store significant amounts of electric charge. Dubbed "power paper," the material is able to be recharged
many hundreds of time, and in mere seconds. It is also
no toxic chemicals or heavy metals to create, and may offer a renewable
and prolific way to provide energy to all manner of devices.
We've seen bike helmets with wooden shells before, and we've also seen foam made from wood pulp. Now, however, Sweden's KTH Royal Institute of Technology has teamed up with Stockholm-based startup Cellutech to combine the two. The result is a helmet made entirely from wood.
Wood pulp-derived nanocellulose is turning out to be pretty useful
stuff. Previously, we'd heard how it could be used in things like high-strength lightweight composites, oil-absorbing sponges and biodegradable computer chips.
Now, researchers from Sweden and the US have used the material to build
soft-bodied batteries that are more shock- and stress-resistant than
their traditional hard counterparts.