Graphene Double-Layer Capacitor with ac Line-Filtering Performance
Abstract
Supercapacitors have porous electrodes that can store more charge per volume in electrical double layers than conventional parallel plate capacitors. However, the porous electrodes cause poor performance in filter circuits that eliminate residual alternating current ripple from rectified direct current. Miller et al. (p. 1637 ) fabricated electrodes with a high surface area for ionic adsorption by growing graphene sheets in the vertical direction off a metal surface. Such capacitors may be able to perform the same filtering tasks as conventional capacitors but take up less space.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 24, 2010
- Source ID
- 10.1126/science.1194372
Entities
People
- B. C. Holloway
- John R. Miller
- R. A. Outlaw
Organizations
- College of William & Mary
- Defense Advanced Research Projects Agency