SulGenesis: Pathways of Sulfur in Energy Storage

For centuries, sulfur has been a symbol of transformation—both in alchemy and in nature. In energy storage, sulfur undergoes an equally profound evolution, unlocking new frontiers in sustainable battery technology. Our group explores the intricate pathways of sulfur in electrochemical systems, uncovering strategies to control its reactivity, stability, and confinement to build the next generation room-temperature sodium-sulfur (RT Na-S) batteries.

The core of our research lies in designing new sulfur cathode materials from abundant, sustainable precursors, developing architectures that physically confine sulfur within conductive carbon matrices. This confinement is key to suppressing sulfur dissolution, mitigating polysulfide migration, and enabling high reversibility of sulfur conversion reactions. Beyond structural design, we focus on the electrode-electrolyte interphase, a critical barrier that protects sulfur from degradation and prevents unwanted side reactions. By tailoring the composition and stability of this interphase, we aim to extend battery lifetime and enhance efficiency.

Yet sulfur’s journey in energy storage is not limited to the cathode alone. Our group also pioneers alternative anode materials, moving beyond pure sodium metal to more stable, dendrite-free solutions. We explore functional membranes as advanced separators and develop novel binders that improve the mechanical and electrochemical integrity of sulfur cathodes.

Fundamental understanding is at the heart of our approach. We integrate various operando characterisation techniques to capture the real-time evolution of sulfur species, track interphase formation, and study volume expansion dynamics. By deciphering sulfur’s electrochemical transformations, we aim to design materials that push the boundaries of energy storage—offering high capacity, long cycle life, and sustainability.

SulGenesis is not just about batteries; it is about charting the pathways of sulfur, from confinement to conversion, in pursuit of a cleaner, more efficient energy future.