The focus of my research is to develop new electrode materials for energy storage devices by improving current chemical processes of dealloying brass sheets to create three-dimensional nanoporous copper structures. By controlling the dealloying process, a more even distribution of pores that are all less than a micron in diameter and greater surface area in the structure will be achieved. These structures will function as current collectors in lithium-ion batteries, with the potential for higher energy density, increased cyclic performance and rate kinetics. Variables such as dealloying chemical composition, brass composition, and sheet thickness will be analyzed to identify the ideal conditions for achieving the most uniform and porous structure, while retaining structural integrity and functionality. Additionally, the structures and properties of solid electrolyte interphase (SEI) layers will be investigated to optimize the structure. The proposed research is aimed at tackling one of the holy grails of Li metal batteries, the cycle stability of the Li metal anode.
Advisor: Jihui Yang – Materials Science & Engineering