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Flexible energy storage devices based on nanocomposite paper

Victor L. Pushparaj*, Manikoth M. Shaijumon*, Ashavani Kumar*, Saravanababu Murugesan, Lijie Ci*, Robert Vajtai, Robert J. Linhardt, Omkaram Nalamasu*, and Pulickel M. Ajayan*,,

Departments of *Materials Science and Engineering and Chemical and Biological Engineering, and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Nanotechnology Center; Rensselaer Polytechnic Institute, Troy, NY 12180

Communicated by Mildred S. Dresselhaus, Massachusetts Institute of Technology, Cambridge, MA, July 11, 2007 (received for review February 23, 2007)


There is strong recent interest in ultrathin, flexible, safe energy storage devices to meet the various design and power needs of modern gadgets. To build such fully flexible and robust electrochemical devices, multiple components with specific electrochemical and interfacial properties need to be integrated into single units.




Power Paper: Energy Storage by the Sheet
"We have a paper battery, supercapacitor and battery-supercapacitor hybrid device that could be used in a variety of energy storage applications," says biological and chemical engineer Robert Linhardt of Rensselaer Polytechnic Institute (R.P.I.) in Troy, N.Y., who helped lead the team that made the discovery. "These devices are lightweight and flexible and are primarily composed of cellulose paper—an environmentally friendly and biocompatible material."
Beyond Batteries: Storing Power in a Sheet of Paper