That’s quite a mouthful so let’s start with a few definitions. Capacitors store electrical energy inside their casings. They brighten our printed circuit boards as they go about issuing their instructions. Firstly, capacitors typically comprise two or more metallic plates with an insulator between them.
Secondly, a nano abbreviated as ‘n’ means one billionth of the measure that follows. Nano engineers experiment with nanomaterials 100,000 times thinner than a human hair.
Sometimes they find they behave differently than their thicker cousins. Then they imagine how these differences could benefit society and develop prototype designs.
The Main Differences between Capacitors and Batteries
Batteries store energy through a chemical process. Capacitors store static electricity. This generates when electric charges in a material are out of balance.
Static electricity makes clothes stick together in a tumble drier. If we touch a metal door handle on a hot, dry day, we may discharge it.
Capacitors are superior to batteries because they charge and discharge faster, They also don’t weigh as much, don’t use harmful chemicals, and last longer.
Until now, their main disadvantage has been size. While batteries have been getting smaller, they have stayed bulky for ages.
Finally, nano engineers at the University of Central Florida have made a breakthrough in their quest to fit super capacitors into wearables and smartphones.
What The Nano Engineers Discovered
Nano engineers at the University of Central Florida have been beavering away at building a supercapacitor out of nano wires. They aim to make it as small as a lithium-ion battery. If they can get this right, there’s a possibility of charging a smartphone in seconds!
They are building mini super capacitors out of tungsten trioxide nanowires. These are so thin they have one-dimensional cores. They encase these in two-dimensional tungsten disulfide shells with sub-nanometer gaps. Here’s a link to a free abstract of their report.
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