A5100445921- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Conducting polymers and applications
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Cyclopropane Reaction Mechanisms
- Semiconductor materials and devices
- ZnO doping and properties
- Solid-state spectroscopy and crystallography
- Copper-based nanomaterials and applications
- Catalytic Processes in Materials Science
- Electronic and Structural Properties of Oxides
- Advanced Battery Technologies Research
- Corrosion Behavior and Inhibition
- Advanced Materials Characterization Techniques
- Organometallic Complex Synthesis and Catalysis
- Force Microscopy Techniques and Applications
- Catalysis and Hydrodesulfurization Studies
- Mechanical and Optical Resonators
- Synthetic Organic Chemistry Methods
Korea Institute of Energy Research
2022-2023
Chungnam National University
2022-2023
Korea University
2021
Korea Advanced Institute of Science and Technology
2015-2020
With their dramatic improvement of photoconversion efficiency, metal–halide perovskite (MHP) solar cells are receiving great attention. For successful deployment these materials as next-generation cells, many research efforts being undertaken to develop highly efficient and stable cells. Because compositional engineering in particular has provided a powerful route optimize the material properties, MHPs with high efficiency stability often include number different components. In this study,...
Abstract Ultrathin film-based transparent conductive oxides (TCOs) with a broad work function (WF) tunability are highly demanded for efficient energy conversion devices. However, reducing the film thickness below 50 nm is limited due to rapidly increasing resistance; furthermore, introducing dopants into TCOs such as indium tin oxide (ITO) reduce resistance decreases transparency trade-off between two quantities. Herein, we demonstrate dopant-tunable ultrathin (≤ nm) fabricated via electric...
The direct hydroformylation of trisubstituted olefins has been achieved with a combination Rh(I) catalyst and π-acceptor phosphorus (briphos) ligand. A sterically bulky briphos ligand large cone angle that forms 1:1 complex is found to be reactive for the olefins. aldehyde products were obtained high diastereoselectivity (>99:1) regioselectivity (49%-81%).
Ion transport is an important issue in electrochemical-based energy conversion and storage devices. at the interface of electrode electrolyte critical for performance. However, there little understanding phenomena based on ion properties. Here, proton behavior a Nafion membrane (electrolyte) that ionomer catalyst layer (electrode/electrolyte interface) was investigated simultaneously by electrochemical impedance spectroscopy. Our study indicates different from membrane. To elucidate...
Abstract To improve the performance of polymer electrolyte membrane fuel cells (PEMFCs), controlling microstructure electrode assembly (MEA) catalyst layer is crucial. The ink design, which includes a catalyst, an ionomer, and solvent, serves as starting point for layer. However, there significant lack understanding structure required this purpose. In study, we investigate effect key component that determines structure. comprises 20 wt% Pt/C, short-side-chain (SSC) Aquivion solvent mixture...
There is still limited understanding of ink structure and the transition process from to catalyst layer (CL) in proton exchange membrane fuel cells despite recent interest field. This study proposes a methodology for analyzing CLs formed after drying single- multi-ink droplets produced using an ultrasonic spray. Two model inks, Pt/Vulcan Carbon Pt/Ketjen Black, are prepared these catalysts, their characteristics analyzed through sedimentation behavior, ionomer adsorption quantification,...
With their dramatic improvement of photoconversion efficiency, metal-halide perovskite (MHP) solar cells are receiving great attention. For successful deployment these materials as next-generation cells, many research efforts being undertaken to develop highly efficient and stable cells. Because compositional engineering in particular has provided a powerful route optimize the material properties, MHPs with high efficiency stability often include number different components. In this study,...