Carbon-Based Supercapacitors Produced by Activation of Graphene

• Published in: Science (American Association for the Advancement of Science) Vol. 332; no. 6037; pp. 1537 - 1541
• Main Authors: Zhu, Yanwu, Murali, Shanthi, Stoller, Meryl D., Ganesh, K. J., Cai, Weiwei, Ferreira, Paulo J., Pirkle, Adam, Wallace, Robert M., Cychosz, Katie A., Thommes, Matthias, Su, Dong, Stach, Eric A., Ruoff, Rodney S.
• Format: Journal Article
• Language: English
• Published: Washington, DC American Association for the Advancement of Science 24.06.2011; The American Association for the Advancement of Science
• Subjects: 08 HYDROGEN; Activation; Applied sciences; Batteries; CAPACITANCE; CAPACITORS; Capacitors. Resistors. Filters; CARBON; CHEMICAL ACTIVATION; Current density; Density; Dielectric, amorphous and glass solid devices; Direct energy conversion and energy accumulation; Electric charge; ELECTRIC CONDUCTIVITY; electrical conductivity; Electrical engineering. Electrical power engineering; electrical equipment; Electrical power engineering; Electrochemical capacitors; Electrochemistry; Electrodes; ELECTROLYTES; Electronics; energy; Energy accumulation; ENERGY DENSITY; ENERGY PLANNING, POLICY AND ECONOMY; ENERGY STORAGE; Exact sciences and technology; Fabrication; Flux density; functional nanomaterials; Graphene; graphene oxide; GRAPHITE; HYDROGEN; ionic liquids; Materials; METERS; Microwaves; MOLTEN SALTS; Nitrogen; OXYGEN; Pores; Porosity; Scientific Concepts; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Supercapacitors; Superconductivity; SURFACE AREA; ultracapacitor; Various equipment and components; Electrical conductivity; Scalability; Electrolytic capacitor; Electrode material; Porous material; Ionic liquid; Chemical activation; Graphene; Manufacturing process; Recording density; Graphite; Supercapacitor; Capacitance; Zero band gap semiconductors; Surface area; Energy storage

Supercapacitors, also called ultracapacitors or electrochemical capacitors, store electrical charge on high-surface-area conducting materials. Their widespread use is limited by their low energy storage density and relatively high effective series resistance. Using chemical activation of exfoliated...