Thesis Defense In Chemistry, Presented by Kelsey Harrison
Structure-Property Optimization of Organic Materials for
Li and Mg Batteries
High atmospheric carbon levels driven by global energy demands necessitate the develop- ment of energy storage systems based on sustainable materials. Organic materials and earth abundant metals can support this initiative with chemical design principles driving the progress of their performance. Magnesium is a promising metal anode alternative to lithium for its reducing power and high capacity but faces challenges in battery performance due to ion transport limitations from its divalent charge. Organic materials also face challenges in their electrochemical performance compared to inorganic systems, but present an opportunity for safer, non-toxic alternatives. In this presentation, I will introduce the progress and challenges of Li and Mg batteries and solutions for improving the performance of organic-based systems. In particular, it will be shown that a helical perylene diimide n-type cathode is optimized for performance in Li and Mg batteries at a "sweet spot" in polymer length. These insights into structure-property optimization provide a platform for advancing the performance of organic materials in energy storage systems.
Zoom Link: https://columbiauniversity.zoom.us/j/99196094265?pwd=3OHCtzyHJSa1cKcP0tHcNhcTq7wfHL.1
Meeting ID: 991 9609 4265
Passcode: 326286
