Yoon Koo Lee

Full-time FacultyResearch Field > Eco-Friendly Mobility Technology

Office

F434

Tel

1762

E-mail

yoonklee@kaist.ac.kr

Site

Site Url

Summary

Research Interest

•Design, optimize, and develop safe and high-performance energy mobility systems
•Multi-scale, multi-physics battery research from an electrode, cell, module, and pack to system level using both experimental and simulation techniques.
◦Cell characterization, material analysis, cell design, and cell production.
◦A physics-based electrochemical/mechanical/thermal/degradation model development
◦Atomistic simulations using first principle calculations
◦Optimization of the battery cell, module/pack, and system performance
◦Module and pack system design and development with safety features
◦Electric vehicle conversion from ICE (internal combustion engine) by removing engine parts

Education

PhD 2015, University of Michigan
MS 2010, University of Michigan
BS 2009, Seoul National University

Biography

Yoon Koo Lee is currently an associate professor at the Cho Chun Shik Graduate School of Mobility at KAIST. Prior to this position, he served as an assistant professor in the Department of Mechanical Engineering at Hanbat National University. He also gained valuable industry experience as a Battery Research Engineer at LG Chem for a period of 5 years.

Dr. Lee holds a Master’s and Ph.D. in Mechanical Engineering from the University of Michigan. His academic journey began with a Bachelor of Science degree in Mechanical and Aerospace Engineering from Seoul National University.

Throughout his career, Dr. Lee has been dedicated to multi-scale, multi-physics battery research spanning from electrode and cell levels to modules, packs, and system integration. His approach combines experimental methods with simulation techniques to advance the understanding and development of safe and high-performance energy mobility systems.

Publication

PUBLICATIONS (†Equal contribution, *corresponding author, #International and Foreign collaborators)

J.Shin, Y.K. Lee*, “Multi-Scale mechanical-electrochemical coupled modeling of stress generation and its impact on different battery cell geometries”, Journal of Power Sources (IF:9.2), 595,234064 (2024)
Y.K. Lee, J. Kim, C. Sung, J.Choi, “Modeling the influence of initial pressure on mechanical and electrochemical performance in solid-state batteries”, Journal of Energy Storage (IF:9.4), 82,110431 (2024)
Y.K. Lee, H. Shin*#, “Modeling and simulation of a composite solid-state battery: the effects of stack pressure on the electrochemical and mechanical behavior”, Journal of Energy Storage (IF:9.4), 78, 110051 (2024)
U. Lee, N. Kang*, Y.K. Lee*, “Shared autonomous electric vehicle system design and optimization under dynamic battery degradation considering varying load conditions” Journal of Cleaner Production (IF:11.1), 138795 (2023)
U. Lee, N. Kang*, Y.K. Lee*, “Optimization of module structure considering mechanical and thermal safety of pouch cell lithium-ion batteries using a reliability-based design optimization approach” Journal of Energy Storage (IF:9.4), 72, 108650 (2023)
Y.K. Lee*, “An optimization framework for enhancing cycle life of composite positive electrodes in lithium-ion batteries via composition ratio optimization”, Journal of the Electrochemical Society (IF:4.371),170, 060528 (2023)
Y.K. Lee*, S. Jeon, Y.Jeon, “Modeling of electrochemical performance and its relation to mechanical responses of li metal batteries”, Journal of the Electrochemical Society (IF:4.371),170, 060520 (2023)
Y.K. Lee*, “Effect of porous structure and morphology of cathode on the degradation of lithium-ion batteries”, Journal of Energy Storage (IF:8.78),52, 104788 (2022)
Y.K. Lee, U. Lee, N. Kang*, “Multi-scale design optimization of electric vehicles by analytical target cascading: from battery cell level to marketing level”, Journal of Cleaner Production (IF:11.072), 368, 133235 (2022)
Y.K. Lee, J.H. Park, H. Shin*#, “Multi-scale analysis of cathode microstructural effects on electrochemical and stress responses of lithium-ion batteries”, Journal of Power Sources (IF: 9.719), 548, 232050 (2022)
H.S Shin†#, Y.K. Lee†, W. Lu*#, “Structural degradation of graphite anode induced by dissolved manganese ions in Lithium-ion batteries”, Journal of Power Sources (IF:9.719), 528, 231223 (2022)
Y.K. Lee, H.S Shin*#, “Modeling study of stress generation of a single active material particle connected to solid electrolyte in solid-state batteries”, Electrochimica Acta (IF: 6.901), 403, 139639 (2022)
Y.K. Lee*, “The effect of transition metal ions on solid electrolyte interphase layer in Li-ion battery”, Journal of Power Sources (IF: 9.719), 484, 229270 (2021)
Y.K. Lee, J.Song, J.Park*# “Multi-Scale mechanical-electrochemical coupled modeling of stress generation and its impact on cell performance in lithium-ion batteries.”, Electrochimica Acta (IF: 6.901), 138682 (2021)
Y. Kim, J. K. Chae, J.-H. Lee, E. Choi, Y. K. Lee, and J. Song^*, “Free manipulation system for nanorobot cluster based on complicated multi-coil electromagnetic actuator”, Scientific Reports (IF: 4.38), 11 (1), 1-9 (2021)
Y.K. Lee, J. Park# and W. Lu*# “A comprehensive experimental and modeling study on dissolution in li-ion batteries”, Journal of the Electrochemical Society (IF: 3.721), 166, A1340 (2019)
Y.K. Lee* “The effect of active material, conductive additives, and binder in a cathode composite electrode on battery performance”, Energies (IF: 2.702), 12, 658 (2019)
Y.K. Lee, J. Park# and W. Lu*# “A comprehensive study of manganese deposition and side reactions in li-ion battery electrodes”, Journal of the Electrochemical Society (IF: 3.662), 164, A2822 (2017)
Y.K. Lee, J. Park# and W. Lu*# “Electronic and bonding properties of limn₂o₄ spinel with different surface orientations and doping elements and their effects on manganese dissolution”, Journal of the Electrochemical Society (IF: 3.259), 163, A1359 (2016)
X. Lin#, J. Park#, L. Liu#, Y.K. Lee, A.M Sastry#, and W. Lu*# “A comprehensive capacity fade model and analysis for Li-ion batteries”, Journal of the Electrochemical Society (IF: 2.859), 160 (10) A1701-A1710 (2013)
J. Park#, S. Kalnaus#, S. Han#, Y.K. Lee, G. Less#, N. Dudney#, C. Daniel#, and A. M. Sastry*#, “In situ atomic force microscopy studies on lithium (de)intercalation-induced morphology changes in Li_xCoO₂ micro-machined thin film electrodes”, Journal of Power Sources (IF: 5.211), 222 (15), 417–425 (2013)

PATENTS

Total 242 Patents and Patent Applications (As of 2023. 09.12)

88 Registered International Patents, 46 Korean Registered Patents, 92 International Patent Applications and 16 Korean Patent Applications

7 Different Patent Categories: 1) Battery Cell, 2) Battery Module, 3) Battery Pack, 4) Electric Vehicle, 5) Energy Storage System, 6) Recycle and Reuse, and 7) Safety Solutions

Selected List of Registered International Patents

[1] Battery Cell

Secondary battery evaluation apparatus, Country: USA, Registration number: 10845181

[2] Battery Module

Apparatus for predicting deformation of battery module, Country: USA, Registration number: 11561152
Battery module with improved cooling structure, Country: Japan, Registration number: 07082665
Battery module having bus bar assembly, Country: USA, Registration number: 11289776
Battery module with improved frame structure and frame assembly for the battery module, Country: USA, Registration number: 10770765
Busbar for cooling battery cell and battery module using same, Country: USA, Registration Number: 10637112

[3] Battery Pack

Battery pack having crash beam and drain structure, Country: USA, Registration number: 11450913
Drawer-type battery pack, Country: Europe, Registration Number: 3565023
Battery module with swelling gauge and battery pack including the same, Country: Japan, Registration number: 07046268
Battery pack having heat conductive medium of louver fin form, Country: Japan, Registration number: 07037005
Battery pack with extendible battery module, Country: Japan, Registration number: 07037007

[4] Electric Vehicle

Battery module, battery pack, and vehicle including the same, Country: Europe, Registration number: 03522255
Battery module, battery pack including same battery module, and automobile including same battery pack, Country: USA, Registration number: 11522246
Battery charging system for electric vehicle charging station, Country: USA, Registration number: 10807479

[5] Energy Storage System

Battery module, battery rack, and power storage device comprising battery module, Country: Japan, Registration number: 7252347
Battery module comprising base plate having gas discharge passage and battery pack and energy storage system, Country: Japan, Registration number: 07170872
Battery module having cooling member and battery pack and energy storage device, Country: Japan, Registration number: 07033235

[6] Recycle and Reuse

Battery module housing having easily reusable, recyclable, and reworkable adhesion structure and battery module comprising the same, Country: USA, Registration number: 11611125
Reusable pouch type secondary battery, battery module comprising the same and method of reusing battery module, Country: USA, Registration number: 11362389

[7] Safety Solutions

Battery module including flame retardant plate, battery rack, and power storage device including the same, Country: Japan, Registration number: 07268188
A battery pack with an energy drain resistor for prevention of chain ignition, Country: Japan, Registration number: 07186876

Awards

2018 LG Chem R&D Awards Feb, 2018
◦Prestige annual awards for the best R&D projects in LG Chem
◦Received as a contributing member of measuring and predicting battery swelling
CoE Distinguished Achievement Awards, University of Michigan Mar, 2011 7

Research

Research and Development

utilizing Multi-scale, Multi-physics Research Methodology

for Safe and High-performance Battery Systems and Applications.

Atomic/Molecular level research

1. Atomic/Molecular-level research

Performing DFT calculations of LiMn2O4 structures for degradation properties and to investigate the propensity fo the degradation mechanisms
Performing DFT calculations of K-ion battery structures for energy, diffusion, geometric parameters and mechanical properties (volume expansion, stiffness and modulus)

Electrode level research

2. Electrode-level research

Performing electrode-level research involving electrochemical reactions and degradation in electrodes during battery operation, as well as thermal and mechanical mechanisms.
Analyzing the characteristics, performance changes, and mechanisms of battery materials and electrodes using various analytical methods (such as AFM, ICP-OES, SEM, and Battery Cycler).

Cell-level research

3. Cell-level research

Performing cell-level research involving electrochemical reactions and degradation in electrodes during battery operation, as well as thermal and mechanical mechanisms.
Analyzing the characteristics, performance changes, and mechanisms of battery cells using various analytical methods.

Module/Pack-level research

4. Module/Pack-level research

Performing module-level research involving electrochemical reactions and degradation in electrodes during battery operation, as well as thermal and mechanical mechanisms.
Design and Development of Battery Module/Pack Structures with Safety Considerations

System-level research

5. System-level research

EV conversion Modeling and Testing

Design and Development of Battery Systems (Battery Pack, Battery Management System) in Electric Vehicles
Vehicle Performance Tests (Driving range, Acceleration, Max Velocity)
Vehicle Model Development and Validations using Test results

Multi-scale, Multi-physics Optimization

Optimal Design using physics-based modeling framework with analytical target cascading (ATC) methodology
Maximize profit with multiple safety and performance constraints

Shared Autonomous EV Design and Operations

Shared autonomous electric vehicle design and operations considering battery capacity degradation and reduced driving range
Optimization of the operation cost and vehicle performance considering dynamic capacity decrease

Teaching

• MO833 Special Topics on Electric Propulsion Systems <Eco-friendly vehicle and battery performance CAE>, KAIST, 2024

Introduction

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Introduction

Education

Admission

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People

Research

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Introduction

Education

Admission

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People

Research

Community

Introduction

Education

Admission

Reservation

People

Research

Community

Introduction

Education

Admission

Reservation

People

Research

Community

Introduction

Education

Admission

Reservation

People

Research

Community

Introduction

Education

Admission

Reservation

People

Research

Community

Yoon Koo Lee

Summary

Research Interest

Education

Biography

Publication

Awards

Research

Teaching

Students