A silver-nanoparticle-catalyzed graphite composite for electrochemical energy storage
By Xingliang He and Dion Hubble and Raul Calzada and Aalap Ashtamkar and Deepak Bhatia and Sergio Cartagena and Partha Mukherjee and Hong Liang
Published in Journal of Power Sources
2015
Abstract
A new composite containing silver nanoparticles and graphite is developed in order to improve electrochemical energy storage. The nanocomposite uses silver (Ag) nanoparticles as a catalyst to enhance the electrochemical performance. Results indicate that the graphite composite decorated with Ag shows up to a six-fold improvement in specific capacitance. Electron/charge transfer is enhanced through a shift from double-layer to pseudocapacitive behavior, mediated by Li+ intercalation. Decoration with Ag nanoparticles allows for improvements in electrochemical impedance response, ease of electronic/ionic charging, and overall energy storage capability. This research provides a promising alternative solution for the next generation of safe and cost-effective lithium-ion devices.