A5100402789- Graphene research and applications
- Fiber-reinforced polymer composites
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Electrocatalysts for Energy Conversion
- Conducting polymers and applications
- Polymer crystallization and properties
- Advanced Battery Materials and Technologies
- Carbon Nanotubes in Composites
- Fuel Cells and Related Materials
- Advanced Sensor and Energy Harvesting Materials
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Organic Electronics and Photovoltaics
- Quantum Dots Synthesis And Properties
- 3D IC and TSV technologies
- Natural Fiber Reinforced Composites
- Recycling and Waste Management Techniques
- Flame retardant materials and properties
- Advanced Battery Technologies Research
- Chalcogenide Semiconductor Thin Films
- Catalytic Processes in Materials Science
- Advanced DC-DC Converters
- Synthesis and properties of polymers
- Fatigue and fracture mechanics
Korea Institute of Science and Technology
2016-2025
Korea Institute of Science & Technology Information
2022-2024
Korea University of Science and Technology
2014-2024
Korea Astronomy and Space Science Institute
2007-2024
Samsung (South Korea)
2003-2024
National Institute of Advanced Industrial Science and Technology
2004-2024
Pusan National University
2012-2024
Gyeongsang National University
2024
Jeonbuk National University
2020-2023
National Institute for Subatomic Physics
2023
Abstract Silk proteins are of great interest to the scientific community owing their unique mechanical properties and interesting biological functionality. In addition, silk not burned out following heating, rather they transformed into a carbonaceous solid, pyroprotein; several studies have identified potential carbon precursors for state-of-the-art technologies. However, no mechanism carbonization has yet been reported. Here we examine structural chemical changes systematically at...
The effect of structural evolution polyacrylonitrile (PAN) on mechanical properties was investigated in stabilization and carbonization. PAN spun fibers were stabilized a convection oven with constant tension for various times at 250℃. Fourier Transform Infrared spectroscopy (FTIR) gel fraction results suggested that intra intermolecular reactions occurred simultaneously. X-ray diffractograms revealed disruption crystalline structure an appearance pre-graphitic due to stabilization. These...
The Immersion Grating Infrared Spectrometer (IGRINS) is a compact high-resolution near-infrared cross-dispersed spectrograph whose primary disperser silicon immersion grating. IGRINS covers the entire portion of wavelength range between 1.45 and 2.45μm that accessible from ground does so in single exposure with resolving power 40,000. Individual volume phase holographic (VPH) gratings serve as cross-dispersing elements for separate arms covering H K bands. On 2.7m Harlan J. Smith telescope...
Pyroprotein-based carbon nanoplates are fabricated from self-assembled silk proteins as a versatile platform to examine sodium-ion storage characteristics in various environments. It is found that, depending on the local structure, sodium ions stored via chemi-/physisorption, insertion, or nanoclustering of metallic sodium. As service our authors and readers, this journal provides supporting information supplied by authors. Such materials peer reviewed may be re-organized for online...
Highly conductive reduced graphene oxide (GO) polymer nanocomposites are synthesized by a well-organized in situ thermochemical synthesis technique. The surface functionalization of GO was carried out with aryl diazonium salt including 4-iodoaniline to form phenyl functionalized (I-Ph-GO). thermochemically developed (R-I-Ph-GO) has five times higher electrical conductivity (42,000 S/m) than typical (R-GO). We also demonstrate R-I-Ph-GO/polyimide (PI) composites having more 10(4) (~1 compared...
Abstract The drying process of graphene-polymer composites fabricated by solution-processingfor excellent dispersion is time consuming and suffers from a restacking problem.Here, we have developed an innovative method to fabricate polymer compositeswith well dispersed graphene particles in the matrix resin using solventfree powder mixing in-situ polymerization low viscosity oligomerresin. We also prepared filled with up 20 wt% grapheneparticles solvent free while maintaining high degree...
A high performance Fe<sub>3</sub>O<sub>4</sub>/Fe/Fe<sub>3</sub>C@PCNF heterogeneous Fenton catalyst was synthesized for aqueous H<sub>2</sub>O<sub>2</sub> decomposition and utilized to remove methylene blue in water.
A facile and efficient synthesis of a solution-processable MoO3/MoS2 featuring uniformly decorated MoO3 nanoparticles onto exfoliated MoS2 nanosheets is realized via one-step oxidation spontaneous exfoliation method using hydrogen peroxide. By as hole extraction layer in organic solar cells, high efficiencies, regardless annealing conditions the interfacial layer, excellent long-term stability are demonstrated. As service to our authors readers, this journal provides supporting information...
Abstract Lithium is perceived as an ideal anode for next generation batteries with high‐energy density. However, the critical issue of intractable growth Li dendrites, which leads to a poor cycling life, still remains. Herein, hierarchical surface designed and constructed on carbon fiber (CF) using binders in fabricated CF paper (CFP). The lightweight high mechanical properties facilitated establish 3D network structure alternative Cu foil. are transformed into oxygen‐containing amorphous...
Low-Ir electrocatalysts are crucial for developing large-scale polymer-electrolyte-membrane water electrolysis (PEMWE) facilities, which necessary to advance the hydrogen economy. However, performance and durability of low-Ir unsatisfactory. To address this issue, we prepared selenium-modified Ir nanoparticles on high-crystalline-carbon (HCC) supports. The introduction HCC supports effectively reduced usage, Se incorporation mitigated degradation. nucleophiles suppressed electrochemical...
The Korea Astronomy and Space Science Institute (KASI) the Department of at University Texas Austin (UT) are developing a near infrared wide-band high resolution spectrograph, IGRINS. IGRINS can observe all H- K-band atmospheric windows with resolving power 40,000 in single exposure. spectrograph uses white pupil cross-dispersed layout includes dichroic to divide light between separate H K cameras, each provided 2kx2k HgCdTe detector. A silicon immersion grating serves as primary disperser...
A novel solution processable hole transporting layer material, based on fluorine functionalized and simultaneously reduced graphene oxide, exhibits a similar performance superior stability to PEDOT:PSS.
In this study, for the first time, thermal oxidation, which has only been considered as a degradation pathway plastics, served simple and effective pretreatment protocol to modulate chemical structure of linear low density polyethylene (LLDPE) successful conversion "noncarbonizable" LLDPE into an ordered carbon. More importantly, based carbon could be graphitized highly graphitic with exceptional electrical performance exceeding that Super-P, pricey reference conductive agent lithium ion...
An electron beam was irradiated on polyacrylonitrile (PAN) fibers prior to thermal stabilization. The electron-beam irradiation effectively shortened the stabilization process by one fourth compared with conventional process. A comprehensive mechanistic study conducted regarding this shortening of irradiation. Various species chain radicals were produced in PAN and existed for a relatively long duration, as observed spin resonance spectroscopy. Subsequently, these gradually oxidized peroxy...