Stable Li Metal Anode for High-Capacity Rechargeable Batteries
Abstract
The purpose of this project is to develop a novel Li metal anode that has a high energy density and long lifetime for use in rechargeable batteries. Li is a very promising anode material because of its extremely high theoretical specific capacity (3,860 mAh/g) and low redox potential (-3.04 vs standard hydrogen electrode). However, it has not been commercialized in the last forty years because of the uncontrolled growth of Li dendrites, which grow from the Li anode toward the cathode during cycling. When the anode comes into contact with the cathode via the dendrites, it short-circuits and this results in the failure of the rechargeable batteries. Two strategies that will be employed in this project to solve the problem of dendrite growth are (1) the development of coating materials for the Li metal and (2) the fabrication of Li metal-framework composites. Optimal coating materials will be investigated from among the 2-dimensional (2D) transition metal dichalcogenide materials. Li metal composites will be fabricated using porous materials such as graphite powders and carbon fibers. Finally, the Li metal composites will be coated with the 2D materials. In addition, we also tested optical properties of the 2D materials, which was developed for Li ion batteries, to evaluate the possibility of utilization of the 2D materials as transparent electrodes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 2023
- Accession Number
- AD1226904
Entities
People
- Suk Jun Kim
Organizations
- Korea University of Technology and Education