Advanced Electrochemical Diagnostics
We develop signal-based diagnostic methods using EIS/DRT, PITT/GITT, QCM, RRDE, transient analysis, and electrochemical modeling to quantify hidden interfacial processes.
Research
Electrochemical signals as windows into hidden interfacial processes
Yoon Lab develops quantitative approaches to understand how interfaces, transport limitations, side reactions, and corrosion determine the performance and lifetime of electrochemical energy systems.
Electrochemical Interfaces and Degradation
We investigate interfacial side reactions, SEI/CEI formation, transport limitations, and degradation pathways in rechargeable batteries and electrochemical devices.
Corrosion in Energy Materials
We quantify corrosion, passivation failure, and current-collector degradation in aqueous, non-aqueous, and solid-state battery environments.
Solid-State and Polymer Electrolytes
We study sulfide-based solid electrolytes, polymer electrolytes, and solid-solid or electrode-electrolyte interfaces for safer and more durable lithium batteries.
Approach
From measured signals to mechanistic parameters
Our work emphasizes the translation of electrochemical measurements into physically meaningful descriptors such as interfacial resistance, transport limitation, reaction rate, corrosion susceptibility, and degradation mode.
Signal acquisition
EIS, DRT, PITT/GITT, chronoamperometry, QCM, RRDE, and operando or post-mortem materials characterization.
Mechanistic interpretation
Physics-informed modeling, transport analysis, kinetic decoupling, and degradation/corrosion mapping.
Evidence
2023
2022
2021
2019
2019
2019
2017
2012
2025
2022
2023
2021
2020
2026
2026
2025
Representative publications linked to each research theme
Selected papers are shown here to connect the research themes with concrete publications. The complete list is available on the Publications page.
Interfaces & Degradation
Interfacial side reactions, SEI/CEI formation, fracture, transport limitations, and failure pathways in battery electrodes and electrochemical devices.
Inhibition of Si Fracture Via Rigid Solid Electrolyte Interphase in Lithium‐Ion Batteries
Advanced Energy Materials
Concentration Gradient Induced Delithiation Failure of MoO3 for Li-Ion Batteries
Nano Letters
Dissolution of cathode–electrolyte interphase deposited on LiNi0. 5Mn1. 5O4 for lithium-ion batteries
Journal of Power Sources
Electrochemically induced fractures in crystalline silicon anodes
Journal of Power Sources
Interfacially Induced Cascading Failure in Graphite‐Silicon Composite Anodes
Advanced Science
Three-dimensional electronic resistivity mapping of solid electrolyte interphase on Si anode materials
Nano Energy
Thermal Decomposition of the Solid Electrolyte Interphase (SEI) on Silicon Electrodes for Lithium Ion Batteries
Chemistry of Materials
Failure mechanisms of LiNi 0.5 Mn 1.5 O 4 electrode at elevated temperature
Journal of Power Sources
Corrosion in Energy Materials
Corrosion, passivation failure, and current-collector degradation in liquid and solid-state battery environments.
Impact of Electrolyte Decomposition on Copper Corrosion in Li6PS5Cl-Based All-Solid-State Batteries
Advanced Functional Materials
Passivation Failure of Al Current Collector in LiPF6‐Based Electrolytes for Lithium‐Ion Batteries
Advanced Functional Materials
Electrochemical Diagnostics & Sensing
Electrochemical sensing, signal interpretation, mapping, and diagnostic methods that connect measured signals to real interfacial phenomena.
Flexible Electrochemical Sensor for Hydrogen Peroxide Detection by Employing WO3/g-C3N4 Nanostructures
Journal of The Electrochemical Society
A sensitive electrochemical detection of hydrazine based on SnO2/CeO2 nanostructured oxide
Microchemical Journal
Na, O-co-doped-graphitic-carbon nitride (Na, Og-C3N4) for nonenzymatic electrochemical sensing of hydrogen peroxide
Applied Surface Science
Energy Materials & Devices
Electrolytes, catalysts, supercapacitors, batteries, and electrochemical materials that broaden the application space of signal-based electrochemistry.
Structural and Transport Origins of Oxidative Stability in PEO–LiTFSI Electrolytes
Chemical Engineering Journal
Facet-Resolved Mechanistic Insights into OER-Selective Seawater Electrolysis on Co3O4
Applied Catalysis B-Environment and Energy
Aqueous Supercapacitors with Ultrawide Potential Window and pH Independent Stability Using Electrodes of Graphene Oxide Nanoribbons/Fe-MOFs Nanocomposite
Chemical Engineering Journal