PMI/PCCM SEMINAR SERIES SPRING 2025: Yiyang Li, University of Michigan

Hosted by Aditya Sood
Date
Jan 29, 2025, 12:00 pm1:00 pm

Details

Event Description

Ion Transport and Phase Transformations in Battery and Memory Devices

Abstract: Energy storage and semiconductor microelectronics are two critical strategic technologies for the United States. Ceramic materials play critical role in enabling the functionality of both technologies. In this talk, I will present our recent research on the transport of ions within these materials. I will first discuss how composition phase separation controls the direction of oxygen diffusion in resistive memory, and how this mechanism can be harnessed to retain information in electrochemical memory at temperatures as high as 600°C. I will then present our efforts to quantify lithium ion diffusion in battery particles using microfabricated electrodes. Such measurements reveal the importance of cracking for enabling fast charge and discharge.

Bio: Yiyang Li is an Assistant Professor of Materials Science and Engineering at the University of Michigan. His group studies ion transport mechanisms in materials for energy storage and microelectronic applications. He received his PhD in MSE from Stanford University in 2016, and was a Harry Truman Postdoctoral Fellow at Sandia National Laboratories from 2017-20.

Please note today's location: Maeder Hall Auditorium

All other seminars are held on Wednesdays from 12:00 - 1:00 p.m. in the Bowen Hall Auditorium Room 222. A light lunch is provided at 11:30 a.m. in the Bowen Hall Atrium immediately prior to the seminar.