I research the fundamentals of anode-electrolyte interactions in Li-ion batteries, in order to enable use of high-capacity, next-generation alloying electrode materials. Standard graphite anodes have up to an order of magnitude lower theoretical capacity than alloying materials such as silicon. However, the volume expansion in these materials as they store lithium ions causes the capacity to fade as they are charged and discharged. My research specifically involves modifying the electrode interface to dynamically mitigate the effects of the volume expansion, while still allowing reversible lithium ion storage to proceed. While the current model system is with silicon electrodes, my research will inform adaptation of this method to other alloying electrodes as well.
Advisor: Cody Schlenker – Chemistry