Home > News > Watch Tower: Advances in energy storage
January 31st, 2008
Watch Tower: Advances in energy storage
Abstract:
There are two major limitations to the conductivity of activated carbon-the high porosity means there isn't much carbon material to carry current, and the material must be "glued" to the aluminum current collector using a binder, which exhibits a somewhat high resistance. Recent innovation made researchers at MIT (USA) is to replace the activated carbon with a dense, microscopic forest of carbon nanotubes that is grown directly on the surface of the current collector. By virtue of their dimensions, nanotubes hold the promise of even higher porosity than the activated carbon used in commercial ultracapacitors. Together the nanotubes have an enormous surface area, and their dimensions are more uniform than those of the activated-carbon pores, making them more like a paintbrush than a sponge. Another advantage of nanotubes over activated carbon is that their structure makes them less chemically reactive, so they can operate at a higher voltage. And certain types of nanotubes, depending on their geometry, can be excellent conductors-which means they can supply more power than ultracapacitors outfitted with activated carbon.
Source:
centralchronicle.com
Bookmark:
| Related News Press |
News and information
Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025
Quantum computers simulate fundamental physics: shedding light on the building blocks of nature June 6th, 2025
A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025
Nanotubes/Buckyballs/Fullerenes/Nanorods/Nanostrings
Enhancing power factor of p- and n-type single-walled carbon nanotubes April 25th, 2025
Chainmail-like material could be the future of armor: First 2D mechanically interlocked polymer exhibits exceptional flexibility and strength January 17th, 2025
Innovative biomimetic superhydrophobic coating combines repair and buffering properties for superior anti-erosion December 13th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Cambridge chemists discover simple way to build bigger molecules – one carbon at a time June 6th, 2025
Electrifying results shed light on graphene foam as a potential material for lab grown cartilage June 6th, 2025
Quantum computers simulate fundamental physics: shedding light on the building blocks of nature June 6th, 2025
A 1960s idea inspires NBI researchers to study hitherto inaccessible quantum states June 6th, 2025
Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage
Enhancing power factor of p- and n-type single-walled carbon nanotubes April 25th, 2025
Leading the charge to better batteries February 28th, 2025
Enhancing transverse thermoelectric conversion performance in magnetic materials with tilted structural design: A new approach to developing practical thermoelectric technologies December 13th, 2024
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||