Rapid Oxygen Diffusive Lithium-Air Battery using Restacking-inhibited, Free-Standing Graphene Cathode Film
Journal
Journal of Materials Chemistry A
Date
2019.03.23
Abstract
A graphene-based porous electrode for a lithium-air battery is investigated for use in next generation energy storage systems. The porosity of the cathode electrode in lithium？air batteries plays a key factor in increasing their oxygen diffusion rate, electrochemical activity and allows for a longer cycle life. In addition, the adsorption behavior of electrolyte is an important media for charging process and diffusion oxygen. We report a fabrication of a restacking-inhibited film cathode using corrugated and highly porous reduced graphene flakes that has an outstanding capacity and cycle life. We have demonstrated a robust porous cathode film for the next generation lithium-air battery, which provides (1) rich voids and space for oxygen-related reaction, (2) easy electrolyte accessibility and oxygen diffusion. This study can be applied for the design of new solution-processed graphene and the development of lithium-air battery cathode.