Christy Cashen
Speaker's Institution
Colorado State University
4:00 PM
Chemistry A101
Mixer Time
3:45 PM
Mixer Time
Chemistry B101E
Calendar (ICS) Event
Additional Information

Literature Seminar Abstract

Ion insertion into a host material is the elementary process by which many energy storage based devices are built upon. For example, rechargeable Li-ion batteries function via a process of Li ions inserting into and extracting out of a host material in the battery. This process results in the generation of electrons which can then go on to do work, such as powering mobile phones, laptop computers, and Bluetooth headphones. Improving efficiency of these host materials has been an ongoing investigation, as investment into sustainable energy is on the forefront of many funding projects. However, fundamental understanding of the mechanism of ion insertion into a host material is arguably equally as important if optimal efficiency is to be attained. This paper presents a method by which direct imaging of lithiation into a single nanowire of host material (WO3) occurs. The authors are able to identify and measure a lithiation front as well as a phase change in real time of a single nanowire. Yet the same data presented in the paper can be analyzed further to gain more fundamental understanding of the system presented. Further analysis includes opportunity to explore particle-particle interface and how this can effect diffusion of lithium through the wire of interest, as well as a discussion on identifying potential pseudocapacitive behavior intrinsic to certain materials.

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