YOON LAB Electrochemical Engineering Lab Kyung Hee University Research | Yoon Lab Electrochemical Engineering Lab
Research

Electrochemical signals as windows into hidden states and mechanisms

Yoon Lab develops quantitative approaches to understand how interfaces, transport limitations, side reactions, degradation, and corrosion determine the performance and lifetime of electrochemical energy systems.

Advanced Electrochemical Diagnostics

We develop signal-based diagnostic methods using EIS/DRT, PITT/GITT, QCM, RRDE, transient analysis, and electrochemical modeling to identify and quantify hidden kinetic, transport, interfacial, and degradation phenomena.

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 translates electrochemical measurements into physically meaningful descriptors of reaction kinetics, interfacial resistance, transport limitation, corrosion susceptibility, and degradation mode.

Signal acquisition

EIS, DRT, PITT/GITT, chronoamperometry, QCM, RRDE, and operando or post-mortem materials characterization.

Parameter extraction

Time constants, interfacial resistance, reaction rates, diffusion and transport descriptors, mass response, and corrosion susceptibility.

Mechanistic interpretation

Physics-informed modeling, kinetic decoupling, degradation mapping, and inverse identification of hidden system states.

Evidence

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.

Corrosion in Energy Materials

Corrosion, passivation failure, and current-collector degradation in liquid and solid-state battery environments.

Electrochemical Diagnostics & Sensing

Electrochemical sensing, signal interpretation, mapping, and diagnostic methods that connect measured signals to real interfacial phenomena.

Energy Materials & Devices

Electrolytes, catalysts, supercapacitors, batteries, and electrochemical materials that broaden the application space of signal-based electrochemistry.