May 28, 2019, Research Highlights

Incorporating Solvate and Solid Electrolytes for All-Solid-State Li2S Batteries with High Capacity and Long Cycle Life

Incorporating highly concentrated solvate electrolyte into all‐solid‐state Li2S batteries significantly improves the battery performance compared to its bare counterpart. The origin of the improved battery cyclability is the favorable interfacial contact, where the ion conducting network surrounding the active material remains intact even after the significant volume contraction of the Li2S cathode. Read More

May 22, 2019, Research Highlights

Understanding Ca Electrodeposition and Speciation Processes in Nonaqueous Electrolytes for Next-Generation Ca-Ion Batteries

Rechargeable Ca batteries have attracted little interest due to the extreme difficulty to perform reversible Ca electrodeposition. There is currently only one electrolyte, Ca(BH4)2 in THF, that exhibits reversible Ca deposition at room temperature. However, the underlying deposition mechanism and the interaction of Ca2+ ions with the surrounding molecules are still mostly unknown. Our research explores Ca deposition and speciation processes by using electrochemical and physical characterization techniques. Read More

January 4, 2019, Research Highlights

Advanced Continuum Models for Simulations of Electrified Interfaces

Development of a novel formalism and methodology to model electrolyte composition at electrified (electrode) interfaces. Predictions that minor species (from the bulk perspective) may become dominant at the electrified interface. Read More