<
https://physicsworld.com/a/cement-based-supercapacitor-makes-a-novel-energy-storage-system/>
"A new cost-effective and efficient supercapacitor made from carbon black and
cement could store a day’s worth of energy in the concrete foundation of a
building or provide contactless recharging for electric cars as they travel
across it. The device could also facilitate the use of renewable energy sources
such as solar, wind and tidal power, according to the researchers at the
Massachusetts Institute of Technology (MIT) and the Wyss Institute, both in the
US, who developed it.
Supercapacitors are technically known as electric double-layer or
electrochemical capacitors, and their capabilities fall somewhere between those
of batteries and conventional (dielectric) capacitors. Though less good at
storing charge than batteries, supercapacitors are better than conventional
capacitors in this respect thanks to their porous electrodes, which have
surface areas as large as several square kilometres. The double layer that
forms at the electrolyte-electrode interface of such devices when a voltage is
applied further increases the amount of charge they can store.
Supercapacitors also have some advantages over batteries. Whereas batteries can
take hours to charge and discharge, supercapacitors do it in minutes. They also
have a much longer lifespan, lasting for millions of cycles rather than
thousands. And unlike batteries, which work through chemical reactions,
supercapacitors store energy in the form of electrically charged ions that
assemble on the surfaces of their electrodes."
Via Kenny Chaffin.
Share and enjoy,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
