Physics – Condensed Matter – Materials Science
Scientific paper
2010-04-04
Physics
Condensed Matter
Materials Science
49 pages, 17 figures, 4 tables, 3 appendices, to be submitted to J. Appl. Phys.
Scientific paper
Electrochemical insertion-deintercalation reactions are typically associated with significant change of molar volume of the host compound. This strong coupling between ionic currents and strains underpins image formation mechanisms in electrochemical strain microscopy (ESM), and allows exploring the tip-induced electrochemical processes locally. Here we analyze the signal formation mechanism in ESM, and develop the analytical description of operation in frequency and time domains. The ESM spectroscopic modes are compared to classical electrochemical methods including potentiostatic and galvanostatic intermittent titration (PITT and GITT), and electrochemical impedance spectroscopy (EIS). This analysis illustrates the feasibility of spatially resolved studies of Li-ion dynamics on the sub-10 nanometer level using electromechanical detection.
Balke Nina
Eliseev Eugene A.
Kalinin Sergei V.
Morozovska Anna N.
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