Electromechanical Probing of Ionic Currents in Energy Storage Materials

Abstract

The electrochemical processes in energy storage materials are generally linked with changes of molar volume of the host compound. Here, the frequency dependent strain response of 1D electrochemically active systems to periodic electric bias is analyzed. The sensitivity and resolution of these electrochemical strain measurements are compared to the current-based electrochemical impedance spectroscopy. The resolution and detection limits of interferometric and atomic force microscopy based systems for probing electrochemical reactions on the nanoscale are analyzed.

12 pages, 4 figures, 2 tables, 2 appendices, submitted to Appl. Phys. Lett

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