A5027735380- Advancements in Battery Materials
- Fuel Cells and Related Materials
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Advanced Battery Technologies Research
- Conducting polymers and applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Photocatalysis Techniques
- Solar-Powered Water Purification Methods
- Advancements in Solid Oxide Fuel Cells
- Membrane Separation Technologies
- Semiconductor materials and devices
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Nanomaterials for catalytic reactions
- Chemical Synthesis and Characterization
- Catalytic Processes in Materials Science
- Copper-based nanomaterials and applications
- Electromagnetic wave absorption materials
- Membrane-based Ion Separation Techniques
- Ammonia Synthesis and Nitrogen Reduction
- Water Quality Monitoring Technologies
- High voltage insulation and dielectric phenomena
Korea Institute of Industrial Technology
2019-2025
Hanyang University
2023-2025
Anyang University
2023-2025
Textile Research Institute
2025
Korea Institute of Science and Technology
2018-2021
Korea Advanced Institute of Science and Technology
2015-2020
Government of the Republic of Korea
2015-2020
Ansan University
2020
Yuhan University
2015
To achieve a high reversibility and long cycle life for lithium-oxygen (Li-O2) batteries, the irreversible formation of Li2O2, inevitable side reactions, poor charge transport at cathode interfaces should be overcome. Here, we report rational design air using cobalt nitride (Co4N) functionalized carbon nanofiber (CNF) membrane as current collector-catalyst integrated cathode. Brush-like Co4N nanorods are uniformly anchored on conductive electrospun CNF papers via hydrothermal growth Co(OH)F...
Rational design and massive production of bifunctional catalysts with fast oxygen reduction reaction (ORR) evolution (OER) kinetics are critical to the realization highly efficient lithium–oxygen (Li–O2) batteries. Here, we first exploit two types double-walled RuO2 Mn2O3 composite fibers, i.e., (i) phase separated RuO2/Mn2O3 fiber-in-tube (RM-FIT) (ii) multicomposite tube-in-tube (RM-TIT), by controlling ramping rate during electrospinning process. Both RM-FIT RM-TIT exhibited excellent...
The combination of high-capacity and long-term cyclability has always been regarded as the first priority for next generation anode materials in lithium-ion batteries (LIBs). To meet these requirements, Ag nanoparticle decorated mesoporous SnO2/NiO nanotube (m-SNT) anodes were synthesized via an electrospinning process, followed by fast ramping rate calcination subsequent chemical reduction this work. one-dimensional porous hollow structure effectively alleviates a large volume expansion...
Lithium-oxygen (Li-O2) batteries have been intensively investigated in recent decades for their utilization electric vehicles. The intrinsic challenges arising from O2 (electro)chemistry mitigated by developing various types of catalysts, porous electrode materials, and stable electrolyte solutions. At the next stage, we face need to reform substituting pure gas with air Earth's atmosphere. Thus, key emerging Li-air batteries, which are related selective filtration suppression undesired...
The colorimetric gas sensor offers an opportunity for the simple and rapid detection of toxic gaseous substances based on visually discernible changes in color sensing material. In particular, accurate trace amounts certain biomarkers a patient's breath provides substantial clues regarding specific diseases, example, hydrogen sulfide (H2S) halitosis ammonia (NH3) kidney disorder. However, conventional sensors often lack sensitivity, selectivity, limit, mass-productivity, impeding their...
To exploit the benefits of nanostructuring for enhanced hydrogen evolution reaction (HER), we employed coaxial electrospinning to synthesize single-layered WS2 nanoplates anchored hollow nitrogen-doped carbon nanofibers (WS2@HNCNFs) as efficient electrocatalysts. For comparison, bulk powder and single layers embedded in (WS2@NCNFs) were synthesized electrochemically tested. The distinctive design WS2@HNCNFs enables remarkable electrochemical performances showing a low overpotential with...
Abstract The physical and chemical degradations of a state‐of‐the‐art proton exchange membrane (PEM) composed perfluorinated sulfonic acid (PFSA) ionomer polytetrafluoroethylene (PTFE) reinforcement are induced through the repeated expansion/shrinkage free radical attacks. Such essentially originate from loose structure materials low interactive binding force among PEM constituents. In this study, need for simplified design principles adhesives led to use mussel‐inspired polydopamine (PD) as...
Oxygen-based electrocatalysis is an integral aspect of a clean and sustainable energy conversion/storage system. The development economic bifunctional electrocatalysts with high activity durability during reversible reactions remains great challenge. tailored porous structure separately presented active sites for oxygen reduction evolution (ORR OER) without mutual interference are most crucial achieving desired catalysts. Here, we report hybrid composed sheath–core cobalt oxynitride...
Gel polymer electrolyte (GPE) based flexible zinc-air batteries (ZABs) are considered promising power sources for next-generation wearable devices because of their high specific energy density, low cost, safety, and environmental friendliness. However, the liquid component in GPE is susceptible to evaporation through air cathode, drastically reducing cell performance lifetime. Poly(vinyl alcohol) (PVA) most widely adopted ion conductive polymer, but its poor water retention ionic...
Abstract Atomically dispersed single‐atom catalysts (SACs) on carbon supports show great promise for H 2 O electrosynthesis, but conventional wet chemistry methods using particulate blacks in powder form have limited their potential as two‐electron (2e − ) oxygen reduction reaction (ORR) catalysts. Here, we demonstrate high‐performance Co SACs supported a free‐standing aligned nanofiber (CNF) electrospinning and arc plasma deposition (APD). Based the surface oxidation treatment of CNF...
Safe and long cycle life electrode materials for lithium‐ion batteries are significantly important to meet the increasing demands of rechargeable batteries. Niobium pentoxide (Nb 2 O 5 ) is one highly promising candidates stable electrodes due its safety minimal volume expansion. Nevertheless, pulverization low conductivity Nb have remained as inherent challenges practical use viable electrodes. A facile method proposed improve overall retention microparticles by ammonia (NH 3 gas‐driven...
The utilization of sustainable water electrolysis for hydrogen production is currently limited by sluggish kinetics the oxygen evolution reaction (OER). development stable, highly active, and cost-effective OER catalyst supports would facilitate commercialization technologies. In this study, we report first time use metallic cobalt nitride (Co4N) nanofibers (NFs) as stable conductive scaffolds supporting Ir nanoparticles (NPs). catalysts supported on Co4N NFs exhibit high activity stability...
Air filtration technology for mitigating pollution due to harmful mixtures of particulate matter (PMs) and yellow dust has been continuously improved. However, significantly small-sized airborne contaminants, such as PM2.5, toxic gases, including volatile organic compounds (VOCs), remain in the atmosphere critically affect human health. Therefore, development an integrated system with fast detection high removal efficiency toward various pollutants without significant interference from...
Lithium–oxygen batteries have been considered as one of the most viable energy source options for electric vehicles due to their high density. However, they are still faced with technical challenges, such low round-trip efficiency and short cycle life, which mainly originate from cathode part battery. In this work, we designed a three-dimensional nanofibrous air electrode consisted hierarchically structured carbon nanotube-bridged hollow Fe2O3 nanoparticles (H-Fe2O3/CNT NFs). Composite...
Synthesis of a co-catalyst functionalized photocatalyst: Ni@NiO-loaded W:BiVO<sub>4</sub> nanofibers (Ni@NiO/W:BiVO<sub>4</sub> NFs) are successfully synthesized as efficient photocatalysts. Ni@NiO/W:BiVO<sub>4</sub> NFs exhibit an excellent photocatalytic water oxidation performance due to bi-functional co-catalytic effect Ni@NiO.
A selective and efficient electrocatalyst composed of MnO Mn–N<sub>x</sub>co-doped carbon nanostructures is developed for electrochemical hydrogen peroxide generation.
Black valve metal oxides with low oxygen vacancies are identified to be promising for various industrial applications, such as in gas sensing, photocatalysis, and rechargeable batteries, owing their high reducibility stability, well considerable fractions of low-valent species lattices. Herein, the nanofiber (NF) black oxygen-deficient tungsten trioxide (WO3-x ) is presented a versatile robust support direct growth platinum catalyst reduction reaction (ORR). The nonstoichiometric, poorly...