All-solid-state Battery-Ultracapacitor Hybrid Devices Based on Nanostructured Materials

Period of Performance: 05/29/2013 - 01/27/2014


Phase 1 SBIR

Recipient Firm

Carbon Solutions, Inc.
5094 Victoria Hill Drive Array
Riverside, CA 92506
Principal Investigator


This project aims to develop all-solid-state hybrid energy storage devices with flexible nanostructured electrode materials combined with a polymer electrolyte. The hybrid devices utilize a capacitor-like electrode based on graphene and carbon nanotubes and a battery-like electrode, comprised of nanostructured LiFePO4 grown on a graphene support. The proposed device combines the advantages of anode, cathode and electrolyte to deliver energy densities > 100 Wh/kg, maintain power densities above 1 kW/kg and provide longer life cycle than a typical rechargeable battery. The proposed approach extends to the conformal fabrication of current collectors, electrodes and electrolyte which allow the hybrid devices to be integrated in the next generation of electronic devices.