Probing Ionic Transport in a Lithiated Carbon Anode with Electrochemical Strain Microscopy
In this work, we will first discuss about using a series of strain-based SPM techniques to distinguish different microscopic mechanisms including electromechanical coupling, spontaneous polarization, induced dipole moment and electrostatics. Then we will demonstrate the localized probing of lithium ion transport property in a lithiated carbon anode using ESM. Pristine carbon anode is also studied as comparison. Also, we’ll investigate the lithium ion transport through the solid electrolyte interface (SEI) layer, which is formed on the carbon anode surface upon cycling.