Research Activities
Research Interests:
- Electrical (conducting and dielectric) properties of electroceramics: solid electrolytes, semiconductors, and mixed conductors, dielectrics, ferroelectrics
- Impedance spectroscopy for energy and electronic applications
- Surface/grain-boundary effects in electroceramics
- Interface thermodynamics and kinetics
- Interface structure – property relationship
- Nanoscale effects in solid state ionics
- High-temperature versus low-temperature defect chemistry
- Application of electroceramics: solid oxide fuel cells, Li-ion batteries, ceramic sensors, catalysis, photoelectrochemical cells, solar cells, ceramic capacitors, ferroelectric devices
Research Projects:
- Artificial intelligence assisted ionics-based materials development platform, Engineering Research Center, NRF
- Investigation of body impedance for health care and medical diagnosis, NRF
- New paradigm for effective practical impedance spectroscopy, NRF
- Electrical characterization of styrene butadiene rubber for tires, PI: Mirae SI, KIAT
- Electrochemical interpretation of the permeation performance of ceramic composite oxygen transport membrane (OTM), subproject, KIER
- Mechanism for improving performance of various solar cells by in-depth AC characterization, Mid-career Research Program (Core Research), NRF
- Multi-species transport phenomena in protonic ceramics: experiments and simulations, subproject of Fusion Research Program for Green Technologies, PI:KIST,NRF
- Electrical characterization of beta alumina ceramics, academy partner in Energy Efficiency & Resources Core Technology Program for beta alumina production, PI: FINETECH, Co. Ltd., KETEP
- Development of advanced hybrid materials and their evaluation techniques for mobile hydrogen storage, BRL (Basic Research Laboratory) Program, NRF
- Electrochemical characterization of solid state electrochemical ammonia synthesis, subsubproject, KIER
- Electrochemical characterization and analysis of solid electrolytes, KIMS
- Development of characterization techniques for the electrical properties of nanostructured electrolytes and the interfacial phenomena, subsubproject for Fundamental R&D Program for Core Technology of Materials, PI: KIST, KEIT
- Relationship between nonlinear dielectric characteristics, processing variables, and degradation phenomena in BaTiO3-based MLCC, Center for Ceramic Passive Components, SNU, Samsung Electromechanics
- Nanoionic Oxides for Green Energy, WCU (The World Class University) Program, NRF
- Ionic conductivity of ceramic materials, FINETECH, Co. Ltd.
- Development of ceramic hydrogen electrode for high temperature steam electrolysis, subsubproject of Hydrogen Energy R&D Center (HERC), 21st century Frontier R&D Program, MEST
- Development of radiation-assisted processes for clean energy harvesting (Co-PI), subproject of Priority Research Centers Program (Research Institute for Catalysis, JNU), NRF
- Impedance model development for the dielectric characteristics with respect to the BT grain size, Center for Ceramic Passive Components, SNU, Samsung Electromechanics
- Development and Application of Impedance Modelling for Electroceramics, General Researcher Program (Female Scientists), NRF
- Preparation and defect-chemical characterization of nitrogen-doped TiO2, a promising photoelectrode material for water-splitting, Joint Research Program (Prof. Lerch, TU Berlin), NRF
- Comprehensive electrical characterization of bulk dielectric, grain boundary and electrode contact for understanding and improving MLCC characteristics, Center for Ceramic Passive Components, SNU, Samsung Electromechanics
- Universal role of dopants and crystallographic polarity in ZnO materials, General Researcher Program (New Faculty Members), NRF
- Impedance spectroscopy for electrochemical analysis of mixed conductors, New Faculty Member Project, JNU