Surface Chemistry and Electrochemistry at Electrode-Ionic Liquid Interfaces

摘要

The overall project goal was to understand and optimize electrode processes innonflammable ionic liquid electrolytes for application in safe, reliable batteries. For anode development, the nucleation-growth mechanisms and the formation of the solid electrolyte interfaces during lithium and sodium electrodepositions were evaluated. while sodium exhibited classic instantaneous nucleation-growth behavior, lithium electrodeposition consisted of two sequential nucleation-growth steps and was consistent with the substrate electrode surface being heterogeneous towards lithium nucleation. Also, impedance studies confirmed the formation of a solid electrolyte interface at both lithium and sodium electrodeposits; however, the interface at sodium was approximately ten times