Exploring Fluorine-Free Electrolytes for Sodium-Ion Batteries

My research group focuses on developing electrochemical materials with better control of the electrode-electrolyte interphase chemistry and a better understanding of the electrode-electrolyte interactions. Surface stabilization can be realized by manipulating the surface chemistry of the electrodes and/or developing new electrolyte materials. This presentation utilizes the study of electrolytes for sodium-ion batteries as illustrative examples to discuss the research methodologies used in my lab and share the knowledge gained during the research. Compared with the high cost, safety concerns, and supply constraints in the areas of lithium-ion batteries, sodium-based batteries offer a promising alternative. They leverage abundant and inexpensive materials such as sodium, manganese, and iron. In order to realize the promise of low cost, long lifespan, and safety, our research focuses on borate-based electrolytes to extend beyond conventional electrolyte salts and explore synthesis possibilities and their implications for the electrode-electrolyte interface. Additionally, we are investigating the potential impact of removing fluorine from the electrolytes on their electrochemical properties. The fluorine-free electrolyte could lead to advancements in battery technologies, potentially revolutionizing energy storage solutions with lower cost and toxicity.