Electrodeposition and Electrodissolution of Li Metal in Nanohole Arrays of Anodic Porous Alumina

Abstract

Electrodeposition and electrodissolution of Li metal in an anodic porous alumina that has an ideal hole array structure were demonstrated. Electrodeposition and electrodissolution of Li metal in the hole array structures could be repeatedly carried out without any formation of dendritic Li. Although the hole diameter of the anodic porous alumina was reduced from the micrometer to nanometer scale, deposition and dissolution of Li metal could be stably conducted. The present process is expected to be applicable to the fabrication of a safe rechargeable Li-metal battery.