Novel High Energy Density Supercapacitors

	Clean Technology 2010 Chapter 4: Smart Grid & Storage
	Novel High Energy Density Supercapacitors
Authors:	S. Risser, B. Tan, H. Castaneda, K. Spahr, M. Stasik
Affilation:	Battelle Memorial Institute, US
Pages:	191 - 194
Keywords:	hybrid supercapacitor, cathode, power density
Abstract:	Cost-effective electrical storage is a critical need for enhancing current devices and enabling new devices and technologies. One of the storage types Battelle has been actively investigating is hybrid supercapacitors. Achieving high energy density in combination with high power density requires both high capacity for charge and low equivalent series resistance. Our approach combines mechanistic studies and electrochemical modeling to determine the appropriate electrode materials and architecture. The nano-sized electrode materials are obtained through the controlled synthesis and formulation of super high surface area and high conductivity metal oxides with conductive supports. The electrode architecture optimizes surface storage with the double layer capacitance process and optimizes the subsurface storage using pseudo-capacitance and intercalation. The control of both the electrode composition and architecture allows the performance of the hybrid supercapacitor to be tuned to meet specific performance and cost targets including high energy density with a high cycling lifetime or increased energy density for discharge time of one second. We will present our most recent experimental results including demonstration of energy density of more than 10 Wh/kg at power density greater than 10 kW/kg.
ISBN:	978-1-4398-3419-0
Pages:	482
Order:	Online/Mail/Fax Ordering Options
Indexes:	Keywords, Authors, Affiliations
Up

Join Us

Featured Events

Cleantech 2012
(joint with TechConnect World)
Santa Clara CA, June 19-21, 2012

Asia Pacific Clean Energy Summit & Expo
Honolulu, Hawai‘i, August 13-15, 2012

"We've very much enjoyed being a member of CTSI. In addition to the many networking and conference opportunities, we've found the monthly newsletters to be the best consolidated source of clean technology industry information and updates on policy, grants and market intelligence."

- Patrick J. Piper, QM Power, Inc.

"Ener-G-Rotors is pleased to be a member of CTSI. CTSI has been very supportive of our efforts in clean technology, helping to connect us with key legislators, introducing us to contacts at the DOE, and providing opportunities to network with other clean technology companies."

- Michael Newell, Ener-G-Rotors, Inc.

"The Clean Technology and Sustainable Industries Organization brings together the world's most innovative companies to provide critical thinking and technology solutions to real-world challenges."

- Dr. Ray O Johnson, Senior Vice President and Chief Technology Officer, Lockheed Martin

Clean Technology 2010

Chapter 4: Smart Grid & Storage

Novel High Energy Density Supercapacitors