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.
Kyung Hee University · Chemical Engineering
Decoding Electrochemical Interfaces, Degradation, and Corrosion
Yoon Lab develops quantitative electrochemical diagnostics to reveal how interfacial degradation, transport limitations, side reactions, and corrosion govern the performance and lifetime of energy materials and devices.
From signals to mechanisms
Our research connects electrochemical measurements with real interfacial phenomena in batteries, solid-state and polymer electrolytes, corrosion systems, supercapacitors, seawater electrolysis, and electrochemical sensors. We focus on translating signals such as impedance, transient current, and mass change into mechanistic understanding of degradation and failure.
Research Themes
Quantitative diagnostics for electrochemical interfaces
We use electrochemical signals as quantitative probes of interfaces, transport, side reactions, corrosion, and degradation in energy materials and devices.
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.
Selected Research Highlights
Representative achievements
2026
Seawater electrolysis
Applied Catalysis B: Environment and Energy
Facet-resolved mechanistic insights into OER-selective seawater electrolysis on Co₃O₄.
2026
Polymer electrolytes
Chemical Engineering Journal
Structural and transport origins of oxidative stability in PEO–LiTFSI electrolytes.
2025
Solid-state batteries
Advanced Functional Materials
Impact of electrolyte decomposition on copper corrosion in Li₆PS₅Cl-based all-solid-state batteries.
2023
Silicon anodes
Advanced Energy Materials
Inhibition of silicon fracture via rigid solid electrolyte interphase in lithium-ion batteries.
Join Yoon Lab
We welcome motivated students interested in batteries, electrochemical diagnostics, corrosion, safety, solid-state and polymer electrolytes, and quantitative analysis of interfacial reactions.