Application of the microelectrode technique to the kinetic study of lithium deposition/dissolution and alloying in organic solutions

The kinetic study on lithium deposition/dissolution has been carried out in 0.1–1 M LiClO4/PC solutions using the microelectrode technique. The concentration dependence of the kinetic parameters for lithium deposition/dissolution and the diffusion coefficient of the lithium ion were evaluated under the condition of suppressed electrolyte decomposition by applying a fast scan rate in cyclic voltammetry. The diffusion coefficient of the lithium ion was evaluated to be 3.99 × 10−6 cm2/s at 27 °C, independent of the salt concentration. The exchange current density for lithium deposition/dissolution was 0.81 mA/cm2 in 0.1 M LiClO4/PC solution, and increased with increasing salt concentration.