A5046362505- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Radiation Therapy and Dosimetry
- MXene and MAX Phase Materials
- Advanced battery technologies research
- Radiation Detection and Scintillator Technologies
- Photonic Crystals and Applications
- Advanced Battery Materials and Technologies
- Advanced Sensor and Energy Harvesting Materials
- Polymer Surface Interaction Studies
- Plasmonic and Surface Plasmon Research
- Advancements in Battery Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Photocatalysis Techniques
- Advanced Battery Technologies Research
- Advanced Memory and Neural Computing
- Neutrino Physics Research
- Molecular Junctions and Nanostructures
- Surface Modification and Superhydrophobicity
- Supercapacitor Materials and Fabrication
- Ionic liquids properties and applications
- Photonic and Optical Devices
Korea Institute of Science and Technology
2023-2025
Sungkyunkwan University
2015-2024
Government of the Republic of Korea
2017-2021
Suwon Research Institute
2017-2021
University of Maryland, College Park
2017-2019
Universidad Nacional Autónoma de México
2017
Université Joseph Fourier
2017
Institut National de Physique Nucléaire et de Physique des Particules
2017
Centre National de la Recherche Scientifique
2017
Institut polytechnique de Grenoble
2017
Because of the salient impact on performance oxygen evolution reaction (OER), surface dynamics precatalysts accompanying oxidation and dissolution catalytic components demands immense research attention. Accordingly, change in structural integrity under high current density generally results inconsistent OER performances. To address this challenge, here, we present intricate design precatalysts, strategically followed by reconstruction treatment presence Fe water condition, which...
This study presents the design, characterization, and application of a novel multifunctional membrane specifically developed for an electrochemical system similar to electrodialysis, with objective removing low-concentration copper ions from semiconductor wastewater. The membranes were fabricated using pore-filling method, where porous polytetrafluoroethylene (PTFE) substrates impregnated monomer blend solutions containing vinyl phosphonic acid (VPA) crosslinking agents, such as...
Varied morphologies and compositions of bismuth tungstate nanocomposites have been investigated as promising materials for photocatalytic applications. Among these nanocomposites, hierarchically structured sulfide (Bi2S3)/bismuth (Bi2WO6) hybrids significant efficiency toward heavy metal ions. To simplify the synthetic procedure this desirable composite, we developed a robust single-step hydrothermal synthesis formation heterocatalysts Bi2S3/Bi2WO6 with high yield (>95%). The synthesized...
MXene-supported CoP and Co<sub>7</sub>Se<sub>8</sub> catalysts showed enhanced water-splitting activity. The oxidation process of the anion components (P Se) hybrid catalysts, under OER conditions, significantly influenced activity stability.
Using tungsten disulfide (WS2) as a hydrogen evolution reaction (HER) electrocatalyst brought on several ways to surpass its intrinsic catalytic activity. This study introduces nanodomain oxide (WO3) interface 1T-WS2, opening new route for facilitating the transfer of proton active sites, thereby enhancing HER performance. After H2S plasma sulfurization W layer realize nanocrystalline subsequent O2 treatment led formation amorphous WO3 (a-WO3), resulting in patchwork-structured...
The role of 2D transition metal carbides, also known as MXenes, active catalyst supports in Co-based oxygen evolution reaction (OER) catalysts was elucidated through a combination experimental and computation electrochemistry. Through facile seeding commericial Co nanoparticles on three different MXene (Ti3C2Tx, Mo2Ti2C3Tx, Mo2CTx), Co@MXene were prepared their electrochemical properties examined for alkaline OER electrocatalysts. activity enhancement significantly improved Mo2CTx Mo2Ti2C3Tx...
Metal–phenolic networks (MPNs) are a versatile class of self-assembled materials that able to form functional thin films on various substrates with potential applications in areas including drug delivery and catalysis. Different metal ions (e.g., FeIII, CuII) phenols tannic acid, gallic acid) have been investigated for MPN film assembly; however, mechanistic understanding the thermodynamics governing formation remains largely unexplored. To date, MPNs deposited at low ionic strengths (<5...
Polymeric three-dimensional inverse-opal (IO) structures provide unique structural properties useful for various applications ranging from optics to separation technologies. Despite vast needs IO functionalization impart additional chemical properties, this task has been seriously challenged by the intrinsic limitation of polymeric porous materials that do not allow easy penetration waterborne moieties or precursors. To overcome restriction, we present a robust and straightforward method...
Inverse-opal structured isoporous membranes can exhibit outstanding separation properties of high selectivity and permeability.
Anion exchange membranes prepared through cyclopolymerization of crosslinking diallylammonium precursors were subjected to various physical, mechanical, and chemical stability property analysis for anion membrane water electrolyzers.
To enable efficient energy conversion and storage, the development of effective electrocatalysts for oxygen evolution reaction (OER) is crucial. Single-atom catalysts (SACs) with 100% active sites OER are highly promising in this regard. In study, we investigated activities Co single atoms (CoSA) adsorbed on metallic MXenes, including Ti3C2O2 Mo2CO2, both their stoichiometric form vacancies (Ov), using spin-polarized first-principles-based calculations. The rate-determining step each case...
Abstract Despite the proposal of numerous advanced materials for batteries, there remains a notable lack comprehensive assessment protocols that facilitate direct comparisons between laboratory-scale research and industrial trials. Here, we introduce standardized method coined as extremely lean electrolytic testing (ELET), designed uniform framework evaluating performance across different battery systems. This approach replicates cycling behaviour larger pouch cells within more manageable...
Abstract The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded data 539 days from 2017 August to 2019 February. We report energy spectrum of cosmic-ray protons ISS-CREAM at energies 1.60 × 10 3 6.55 5 GeV. measured deviates a single power law. A smoothly broken power-law fit data, including statistical and systematic uncertainties, shows spectral index change 9.0 GeV 2.57 ± 0.03 2.82 0.02 with significance greater than σ . This...
In this study, we address the significant challenge of overcoming limitations in catalytic efficiency for oxygen evolution reaction (OER). The current linear scaling relationships hinder optimization electrocatalytic performance. To tackle issue, investigate potential designing single-atom catalysts (SACs) on Mo2CO2 MXenes electrochemical OER using first-principles modeling simulations. By employing Electrochemical Step Symmetry Index (ESSI) method, assess intermediates to fine-tune activity...
Anion exchange membrane water electrolysis (AEMWE) shows potential for hydrogen production using cost-effective nonplatinum group metal (non-PGM) catalysts, achieving high current density performance. However, challenges remain in developing materials, including stable membranes and ionomers under alkaline conditions non-PGM catalysts that are both high-performing durable the anodic oxygen evolution reaction (OER). This study presents an approach synthesizing highly crystalline...
A novel graphitizable phenolic network is implemented through modular knitting of tannic acids. Its hybridized phase with metals can offer on-demand tunability for designing electrochemically active materials energy storage/conversion systems.
Abstract The binder is an essential component in determining the structural integrity and ionic conductivity of Li‐ion battery electrodes. However, conventional binders are not sufficiently conductive durable to be used with solid‐state electrolytes. In this study, a novel system proposed for Li secondary that combines electrolyte into unified structure, which achieved by employing para‐phenylenediamine (pPD) moiety create supramolecular bridges between parent binders. Due partial...
Interestingly, the petals of flowering plants display unique hierarchical structures, in which surface relief gratings (SRGs) are conformably coated on a curved with large radius curvature (hereafter referred to as wavy surface). However, systematic studies interplay between diffractive modes and have not yet been reported, due absence deterministic nanofabrication methods capable generating combinatorially diverse SRGs surface. Here, by taking advantage recently developed composed...
Temperature can be harnessed to engineer unique properties for materials useful in various contexts and has been shown affect the layer-by-layer (LbL) assembly of polymer thin films cause physical changes preassembled films. Herein we demonstrate that exposure relatively low temperatures (≤ 100 °C) induce physicochemical cationic The surface charge containing primary secondary amines reverses after heating (from positive negative), different characterization techniques are used show change...
Aqueous hydrofluoric acid (HF)-based solutions are widely used for etching MAX phases to synthesize high-purity 2D molybdenum carbides (MXenes). However, their applicability is limited selected phases, and the production of certain MXenes, such as Mo-based remains challenging owing low quality, yield, time-intensive process, often requiring several days weeks. In this study, a non-aqueous etchant faster more efficient synthesis MXenes introduced. This etchant, containing Cl- F- ions,...
Atomic force microscopy (AFM) nanomanipulation has been viewed as a deterministic method for the assembly of plasmonic metamolecules because it enables unprecedented engineering clusters with exquisite control over particle number and geometry. Nevertheless, dimensionality via AFM is limited to 2D, so restrict design space available artificial electromagnetisms. Here, we show that "2D" tip can be used assemble "3D" in versatile way by dribbling highly spherical smooth gold nanospheres (NSs)...