A5041484135- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Advancements in Solid Oxide Fuel Cells
- Conducting polymers and applications
- Advanced battery technologies research
- Catalysis and Hydrodesulfurization Studies
- Catalysis and Oxidation Reactions
- Zeolite Catalysis and Synthesis
- Mesoporous Materials and Catalysis
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Electronic and Structural Properties of Oxides
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Chemical Synthesis and Characterization
- Membrane-based Ion Separation Techniques
- Catalysts for Methane Reforming
- Industrial Gas Emission Control
- Advanced Battery Technologies Research
- Synthesis and properties of polymers
- Hydrogen Storage and Materials
- Silicone and Siloxane Chemistry
- Gas Sensing Nanomaterials and Sensors
- Semiconductor materials and devices
Yonsei University
2015-2024
Government of the Republic of Korea
2016-2019
Lotte Fine Chemical (South Korea)
2013
Sangji University
2013
Ewha Womans University
2010
Pohang University of Science and Technology
2005
Chonnam National University
2005
Sunchon National University
2000-2005
Korea Research Institute of Bioscience and Biotechnology
2003
Sogang University
2001-2003
Establishment of a sustainable energy society has been strong driving force to develop cost-effective and highly active catalysts for conversion storage devices such as metal–air batteries electrochemical water splitting systems. This is because the oxygen evolution reaction (OER), vital operation, substantially sluggish even with precious metals-based catalysts. Here, we show first time that hexagonal perovskite, BaNiO3, can be functional catalyst OER in alkaline media. We demonstrate...
Abstract For efficient catalysis and electrocatalysis well‐designed, high‐surface‐area support architectures covered with highly dispersed metal nanoparticles good catalyst‐support interactions are required. In situ grown Ni on perovskites have been recently reported to enhance catalytic activities in high‐temperature systems such as solid oxide cells (SOCs). However, the micrometer‐scale primary particles prepared by conventional solid‐state reactions limited surface area tend retain much...
Abstract Bimetallic catalysts combining precious and earth-abundant metals in well designed nanoparticle architectures can enable cost efficient stable heterogeneous catalysis. Here, we present an interaction-driven in-situ approach to engineer finely dispersed Ni decorated Pt nanoparticles (1-6 nm) on perovskite nanofibres via reduction at high temperatures (600-800 o C). Deposition of (0.5 wt%) enhances the reducibility support promotes nucleation cations metal-support interaction,...
Surfactant bilayers adsorbed on TS-1 zeolite were used as templates to produce colloidal nanocomposites with a polypyrrole (Ppy) shell. The surfactant was cetylpyridinium chloride, and it plays critical role for attaining both the stability of an enhanced conductivity Ppy sheath core. observed contact 5 S/cm sample 8 wt % incorporation while bulk powder had 0.03 S/cm.
Rechargeable secondary zinc-air batteries with superior cyclic stability were developed using commercial polypropylene (PP) membrane coated polymerized ionic liquid as separators. The anionic exchange polymer was synthesized copolymerizing 1-[(4-ethenylphenyl)methyl]-3-butylimidazolium hydroxide (EBIH) and butyl methacrylate (BMA) monomers by free radical polymerization for both functionality structural integrity. induced copolymer on a commercially available PP (Celguard 5550). coat allows...
We report a facile universal patterning method that provides well-arrayed patterns of polymer electrolyte membranes with large electrochemical area using an elastomeric mold. The membrane electrode assembly fabricated patterned Nafion exhibited high current density.
The strong bonding at the interface between metal and support, which can inhibit undesirable aggregation of nanoparticles carbon deposition from reforming hydrocarbon, is well known as classical metal-support interaction (SMSI). SMSI nanocatalysts was significantly affected by heat treatment reducing conditions during catalyst preparation.the reduction preparation. be weakened decrement metal-doped sites in supporting oxide often deactivate catalysts encapsulation active through these...
Abstract Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained an economical commercialization. Here, we fabricated high-performance electrode assembly (MEA) using interfacial design based on well-arrayed micro-patterned membranes including circles, squares hexagons with different sizes, which produced by facile elastomeric mold method. The best MEA...
An Aquivion/titanium zirconium oxide nanofibrous web composite membrane was prepared and tested as a proton exchange in hydrogen/air fuel cell. The incorporation of small dose (9 wt % membrane) uniformly distributed electrospun titanium (TiO2/ZrO2; Ti/Zr = 1:1 atomic ratio) significantly improved hydromechanical stability the membranes, which exhibited approximately 2 times higher water retention 30 lower dimensional change than pristine Aquivion under in-water hydration conditions....