ARTIFICIAL SOLID ELECTROLYTE INTERPHASE: DESIGN, SYNTHESIS, CHARACTERIZATION AND EFFICACY EVALUATION

With understanding the fundamental degradation mechanisms of active material in batteries, the mitigation strategies are challenged by constraints of the liquid electrolyte environment and its complications on the electrode/electrolyte interphase. The solid electrolyte interphase (SEI) layer which forms, grows, and changes with the battery usage, is what we wish to overcome.

In our lab we utilize state of the art techniques for depositing thin protection layer, as artificial SEI (ASEI) directly on electrochemically active surfaces. These techniques facilitate accurate and precise control over the composition and properties of the functional thin films. This control enables us to further evaluate and optimize the efficacy of the ASEI in preventing the degradation of the active material in order to extend the lifetime of the batteries.

The potential in understanding this fundamental science: (1) Understanding the necessary properties of ALD layers on electrode materials, specifically for diverse parasitic interfacial reactions and how they may be refined through tailor designed compositions and thickness of protection layers; (2) Evaluating the transportation properties of the thin film and their interfaces with electrodes; (3) Clarifying the essential chemical phenomena of both anode and cathode