A5002907437- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- T-cell and B-cell Immunology
- Advanced battery technologies research
- Electrodeposition and Electroless Coatings
- Immune Cell Function and Interaction
- Copper Interconnects and Reliability
- Immunotherapy and Immune Responses
- Catalytic Processes in Materials Science
- Conducting polymers and applications
- Supercapacitor Materials and Fabrication
- Electrochemical Analysis and Applications
- Semiconductor materials and devices
- Corrosion Behavior and Inhibition
- Advancements in Solid Oxide Fuel Cells
- Advanced Photocatalysis Techniques
- Advancements in Battery Materials
- Advanced Surface Polishing Techniques
- TiO2 Photocatalysis and Solar Cells
- Catalysts for Methane Reforming
- Membrane-based Ion Separation Techniques
- Immune Response and Inflammation
- Electronic Packaging and Soldering Technologies
- Electrowetting and Microfluidic Technologies
- Hybrid Renewable Energy Systems
Incheon National University
2015-2024
Incheon Medical Center
2018-2021
Government of the Republic of Korea
2018-2021
Kolon Life Science (South Korea)
2011-2015
Konkuk University
2006-2011
Seoul Medical Center
2007-2009
University of Ulsan
2005-2007
CHA University
2006-2007
Seoul National University
2004-2007
Ulsan College
2005
Ultra-stable Pt cathode catalysts in ultra-low loading proton exchange membrane fuel cells were synthesized by facile carbon encapsulation.
Direct alcohol fuel cells play a pivotal role in the synthesis of catalysts because their low cost, high catalytic activity, and long durability half-cell reactions, which include anode (alcohol oxidation) cathode (oxygen reduction) reactions. However, platinum suffer from CO tolerance, affects stability. The present study focuses on ultrafine Pt nanoparticles stabilized by flowerlike MoS2/N-doped reduced graphene oxide (Pt@MoS2/NrGO) architecture, developed via facile cost-competitive...
We report semi-interpenetrating polymer network (semi-IPN) membranes prepared easily from a cross-linked using poly(acrylic acid) (PAA) and poly(vinyl alcohol) (PVA) with interpenetrated Nafion for both proton-exchange membrane fuel cell (PEMFC) water electrolyzer (PEMWE) applications. Thermal esterification between PAA PVA induced three-dimensional cross-linking to improve mechanical toughness reduce hydrogen crossover, while the hydrophilic nature of PAA–PVA-based matrix still enhanced...
Abstract More active electrocatalysts for H 2 and O evolution reactions, efficient membranes, robust porous transport layers (PTL) are required designing advanced proton exchange membrane water electrolysis (PEMWE) systems. An N‐doped carbon matrix is introduced in this study to surpass the existing Ti PTLs. One‐step pyrolysis results carbonization of polyaniline films matrix, simultaneous formation desiccation cracks Ir x Ru y nanoparticles, partial impregnation synthesized particles into...
Nitrogen-doped carbon-encapsulated non-noble metals are promising electrocatalytic alternatives to Pt for the oxygen reduction reaction (ORR).
Methanol crossover is one of the largest problems in direct methanol fuel cells (DMFCs). passing from anode to cathode through membrane oxidized at cathode, degrading DMFC performance, and intermediates oxidation reaction (MOR) cause catalyst poisoning. Therefore, it essential develop a capable inhibiting MOR while promoting oxygen reduction (ORR), which typical DMFCs. In this study, carbon-encapsulated Pt was synthesized for purpose. The simply by heat treatment Pt-aniline complex-coated...
Abstract Downsizing a catalyst nanoparticle (NP) to single atom (SA) has proven be highly effective in increasing catalytic activity and decreasing the amount of required for various electrochemical reactions. However, insufficient stability single‐atom site catalysts (SACs) is still significant challenge their practical application. Here, SACs firmly bound stable metal oxide NPs are proposed dramatically increase SA‐based hydrogen evolution reaction (HER). Starting from Ru‐infiltrated,...
Active, stable electrocatalysts based on non-precious metals for the oxygen reduction reaction (ORR) and hydrogen evolution (HER) are critical development of cost-effective, efficient renewable energy technologies. Here, Fe/Fe3C-embedded nitrogen-doped carbon was fabricated via pyrolysis iron-porphyrin-encapsulated mesoporous metal-organic frameworks [PCN-333 (Fe), where "PCN" stands "porous coordination network"] at 700 °C. The various characterization techniques confirmed that Fe-...
We prepared Nafion composite membranes by impregnating Nafion-212 with polydopamine, poly(sulfonated dopamine), and poly(dopamine-co-sulfonated dopamine) using the swelling–filling method to generate nanopores in framework that were filled these polymers. Compared pristine membrane, showed improved thermal mechanical stabilities due strong interactions between catecholamine of polydopamine derivatives matrix. For membrane (N-PSDA), further induced sulfonic acid side chain, resulting enhanced...
Investigation of the anode porous transport layer (PTL) is crucial for commercialization anion-exchange membrane water electrolysis (AEMWE). Recently, nickel foam (Ni-foam) has been employed as an alternative to conventional titanium-based PTL (Ti-felt) and strategies improve its performance durability have developed. However, few studies investigated effect pore structures in Ni-foam applications other Ni-based PTLs not reported. In this study, two with different structures, felt (Ni-felt),...
A novel investigation was performed on fluorine-rich carbon shell formation metal (Fe/Co/FeCo) surfaces and their contribution to capacitance enhancement evaluated.
<h3>Objective</h3> To look for HLA class II alleles and haplotypes conferring susceptibility to multiple sclerosis (MS) in the Jewish population of Israel. <h3>Design</h3> Population-based cohort clinically definite patients with MS tested prospectively over 7 years. <h3>Setting</h3> Referral center a neurology clinic at university hospital greater Jerusalem area <h3>Patients</h3> A total 162 consecutive from 2 main ethnic groups Israel: 104 Ashkenazi (80 relapsing remitting or secondary...
Abstract The development of a low cost and highly active alternative to the commercial Pt/C catalysts used in oxygen reduction reaction (ORR) requires facile environmentally-friendly synthesis process facilitate large-scale production provide an effective replacement. Transition metals, conjunction with nitrogen-doped carbon, are among most promising substitute because their high activity, inexpensive composition, carbon monoxide tolerance. We prepared polyaniline-derived Fe-N-C catalyst for...