Electrochemistry for Energy Storage and Information Processing 


We reside in the Department of Materials Science and Engineering at the University of Michigan. Our research combines the synthetic power of materials chemistry with the nanoscale precision of microelectronics, targeted towards the two grand challenges of energy storage and computing. We aim to develop fundamental mechanistic insights and rational design rules for improved devices. We practice hypothesis-based scientific inquiry combining observation, hypothesis, and experimental validation. Our research furthermore places a strong focus on statistics and data-driven experimental approaches. We foster an open, inclusive, and supportive environment where all students can thrive, and welcome students of all majors, educational experience, and backgrounds.

Please click through this site to learn more about our work. We are always interested in new undergraduate and graduate students who would like to work with us. Students at the University of Michigan can reach out to Yiyang by email at any time.

Information about applying for a MS or PhD at the University of Michigan, Department of Materials Science and Engineering, can be found on this website: https://mse.engin.umich.edu/graduate/admissions. Prospective applicants are welcome to email Yiyang before or after they apply, but the admissions committee makes the admissions decisions, not individual faculty in the MSE department. This policy may be different at other universities and even other departments at the University of Michigan. 

We are interested in working with former members of a US Service Branch at any educational level (community college, undergraduate, or graduate) from any institution, during the school year or during summer breaks. These students can directly email Yiyang.

Email: yiyangli@umich.edu

Jingxian Li and Jinhong Min win MRS Graduate Student Award (29-Nov-2023)

Congratulations to Jingxian and Jinhong won the MRS Graduate Student Award at Fall MRS 2023 in Boston. Jingxian's research is on phase separation in resistive memory devices. Jinhong's research is on single-particle electrochemistry on battery materials. Jingxian and Jinhong launched the memory and battery research program in the Li+ group.

Congratulations to Riley on Winning the Best Paper Award for the Winter 2023 ME RISE Research Program (29-Sept-2023)

Riley's paper on Developing a Platform for Single-Particle Electrocatalyst Characterization was chosen as the winner of the Winter 2023 RISE Best Paper Award!

Welcome New Students: Sangyong, Po-Yu, Yerin, and Harshada (26-Sep-2023)

The Li+ group welcomes graduate students Sangyong Lee, Po-Yu Kung, Yerin Hong, and Harshada Suryawanshi. See their information on the "Members" page.

Research Project Summary

All of our research projects relate to the overlap between microelectronics and batteries, two of the most important technologies of modern society. We believe that much can be learned by cross-pollinating ideas and concepts from one field onto the other.

Oxygen Transport in Resistive Switching

Redox random-access memory (ReRAM) is a promising memory technology for information storage, including for extreme environments including high temperatures and high radiation. Unlike conventional electronic memory like Flash that stores information using electrons in energy traps in Si-based materials, ReRAM stores information using oxygen vacancy ions within transition metal oxides; these vacancies have very different transport properties than electrons. Our research aims to understand oxygen vacancies in ReRAM moves under concentration, electric field, and thermal driving forces. Understanding this oxygen vacancy migration in different materials is crucial towards understanding and improving resistive memories.

Electrochemical random-access memory

We believe that the atom is the highest density information storage element. With over 106 atoms in a small (30-nm)3 volume, we anticipate that the ability to dynamically control the number of atomic point defects in materials can be used to achieve truly analog memory.

We developed the electrochemical random-access memory cell that will enable precise control of atoms in a memory device. By harnessing the ability to move atomic point defect in a device, we can develop truly nonvolatile analog memory.

Variability in Li-ion batteries

Li-ion batteries are made from micron-sized, redox-active particles in porous electrodes. However, while it is easy to measure differences in their size or morphology, it has not been possible to measure differences in electrochemical properties like lithium diffusion and interfacial reactivity.

To answer this question, we will quantify the electrochemical properties of individual battery particles, and correlate these properties with structural and compositional features. This research aims to determine how the composition and the microstructure of battery particles ultimately affect their electrochemical properties. 

Yiyang Li

Principal Investigator

Jingxian Li

Graduate Student

Jinhong Min

Graduate Student

Dongjae Shin

Graduate Student

Andrew Jalbert

Graduate Student

Emily MacInnis

Graduate Student

Pengyu Ren

Graduate Student

Sangyong Lee

Graduate Student

Po-Yu Kung

Graduate Student

Yerin Hong

Graduate Student

Harshada Suryawanshi

Graduate Student

Riley Hargrave

Undergraduate Student

Leah Simakas

Undergraduate Student

Sabrina Wong

Undergraduate Student



We are grateful for the kind support for our research by the following organizations. The logos are displayed for information purposes; they do not imply an endorsement of our activities or viewpoints by these organizations.


LG Energy Solution

Sandia National Labs