Changyu Deng

(+1)734-210-1996

dengcy@umich.edu

Welcome to my personal website!

I am currently a PhD student at University of Michigan, Ann Arbor. I am in Mechanical Engineering and focus on modeling and design of rechargable batteries.

Download my CV.

This website gives a brief introduction to me. Now it includes education, news, publications, projects. I will add more information in the future.

Please do not hesitate to contact me for any question, comment or complaint. I am working on various types of projects from coding to experiments, and have multiple hobbies such as video games, Go game, swmimming, and table tennis. So you are welcome to discuss any fun stuff with me :smiley:

Education

Unversity of Michigan, Ann Arbor 2018/08 - present

  • PhD Candidate, Mechanical Engineering
  • MSE, Electrical and Computer Engineering (2021/12)
  • MSE, Mechanical Engineering (2019/12)

University of California, Los Angeles 2017/07 - 2017/09

  • Cross-disciplinary Scholars of Science and Technology Summer Program

Xi’an Jiaotong University 2014/08 - 2018/06

  • B Eng, Energy and Power Engineering
  • B Eco, Economics

Research interests

I am working on modeling and design of rechargable batteries. Specifically, my research includes the following three categories. See projects for recent research projects.

1. Cell-level modeling and parameterization of Li-ion batteries

  • Building psuedo two-dimensional (P2D) model with degradation mechanisms.
  • Conducting experiments and regression to figure out the parameters used in the models. [more]
  • Investigating techniques to improve measurement acuracy. [more]
GITT and EIS are two popular techniques to measure diffusivity. Yet, their results sometimes have up to orders of magnitude difference. This project resolved their discrepancy of diffusivity measurement. Click on the figure to read more.
  • Background: both simulation and experiment in battery field are time-consuming, and it will be more problematic to optimize battery parameters and morphology.
  • Trying to design gradient-free algorithms to reduce the number of trials (configurations). [more]
We tried to optimize the mophology of electrode for lithium ion batteries without any prior assumption on its pattern. We devised a gradient-free algoritm to solve such a problem and obtained a branch-like pattern. Click on the figure to read more.
  • Considering the time-dependent nature of battery cycling.

3. Battery material design

  • Manufacturing materials based on the output of optimization. [more]
We used a carbon template to make anode for batteries. As our preliminary result, we came up with a extremely cheep phosphorus/carbon anode material for sodium-ion batteries. Click on the figure to read more.

news

Aug 26, 2022 Finished my 4-month internship at Apple. Very precious experience in my life. I was so lucky to meet new friends and learn new stuff during the summer. Welcome to my linkedin to take a look at what I did in my project (that’s all I could say by Apple’s policy :sweat_smile:).
Aug 1, 2022 Received Chinese Government Award for Outstanding Self-financed Students Abroad. Not much hassle to apply (no recommendation letter, only one-page statement) and a lot of money to earn ($6000). I like awards like this :stuck_out_tongue_closed_eyes:
Dec 31, 2021 There was so much happening this year that I did not have time to update the website :rofl:
Nov 20, 2020 Elected as the student representative of Graduate Admission Commitee. Excited to know how the commitee works.
Sep 14, 2020 Participated ME Rising Stars, an acedemic career workshop jointly held by Berkeley, Stanford and MIT (Berkeley this year).