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