A5100722738- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Photonic and Optical Devices
- Advanced battery technologies research
- Conducting polymers and applications
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Advancements in Battery Materials
- Optical Coatings and Gratings
- Electromagnetic Scattering and Analysis
- Analytical Chemistry and Sensors
- Photorefractive and Nonlinear Optics
- Extraction and Separation Processes
- Supercapacitor Materials and Fabrication
- Advanced Fiber Optic Sensors
- CO2 Reduction Techniques and Catalysts
- Numerical methods in inverse problems
- Gas Sensing Nanomaterials and Sensors
- Semiconductor materials and devices
- Thin-Film Transistor Technologies
- ZnO doping and properties
- Advanced Battery Materials and Technologies
- Advanced Chemical Sensor Technologies
- Transition Metal Oxide Nanomaterials
- Combustion and Detonation Processes
Ewha Womans University
2024-2025
Soongsil University
2015-2024
Louisiana State University
2024
Chonnam National University Hospital
2023
Korea Institute of Ceramic Engineering and Technology
2020
Agency for Defense Development
2019
Southern Methodist University
2016
Stanford University
2013
Seoul National University
2006-2011
Accumulating electrons in transparent conductive oxides such as indium tin oxide (ITO) can induce an "epsilon-near-zero" (ENZ) the spectral region near important telecommunications wavelength of λ = 1.55 μm. Here we theoretically demonstrate highly effective optical electro-absorptive modulation a silicon waveguide overcoated with ITO. This modulator leverages combination local electric field enhancement and increased absorption ITO when this material is locally brought into ENZ state via...
Spinel lithium manganese oxide (LiMn2O4, LMO) is a promising cathode material with nontoxicity, high operating voltage, and low cost. However, structural collapse during battery cycling ─ caused by Mn dissolution the Jahn–Teller effect critical disadvantage, reducing cycle retention, particularly at temperatures. In this study, to solve these issues, we introduce Cu3(HITP)2 (CuHITP; HITP = 2,3,6,7,10,11-hexaiminotriphenylene), conductive two-dimensional (2D) metal–organic framework (MOF) as...
Abstract Given environmental friendliness, high‐temperature proton exchange membrane fuel cells (HT‐PEMFCs) can be the alternative power source for clean generation. However, neither developments nor strategies of diffusion media are actively conducted yet to achieve high‐performance HT‐PEMFCs. Herein, a nanoporous carbon nanotube (CNT) sheet, new anode layer between gas layer|bipolar plate interface that improves cell performance and durability by CNT purification facilitating accessibility...
Ethylene is well known as the primary product of CO 2 reduction at Cu electrocatalysts using zero-gap membrane electrode assembly cells with gas diffusion cathodes. Other types including oxide-derived Cu, CuSn and CuSe yield relatively more C oxygenates; however, mechanisms for selectivity are not established. This work considers trends Cu-P 0.065 , Cu-Sn 0.03 Se made a standard one pot synthesis method. Results show that (Cu δ + = 0.13) retain ethylene higher Faradaic efficiencies (FE 43%...
In this study Cu, Sn, and bimetallic CuSn x nanoparticles were synthesized evaluated as electrocatalysts for CO 2 reduction using zero gap membrane electrode assemblies. Results show with Sn contents above 10% yield formate a primary product Faradaic Efficiencies near 70% at 350 mA cm −2 . Cu-Sn less than current densities below relatively lower cell potentials. When the low-Sn content in alkaline anolytes , ethanol was recorded (FE = 48.5% E ≥ 3.0 V). We propose enhanced C activity...
Abstract Optimizing both performance and stability under varying relative humidity (RH) conditions is crucial for proton exchange membrane fuel cells (PEMFCs). Therefore, effective management of mass transfer water an essential key factor. To further improve stability, this paper reports a novel PEMFC design strategy that introduces carbon nanotube (CNT) sheets with titanium (Ti) deposited onto them as additional functional layer using the sputtering method. The Ti‐CNT (as Ti‐deposited CNT...
A simple and effective optical interconnection which connects two distanced single metal-dielectric interface surface plasmon waveguides by a floating dielectric slab waveguide (slab bridge) is proposed. Transmission characteristics of the suggested structure are numerically studied using rigorous coupled wave analysis, design rules based on study given. In wave-guiding part, if bridge can support more than fundamental mode, then transmission efficiency shows strong periodic dependency...