A5001526947- Graphene research and applications
- Carbon Nanotubes in Composites
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Fiber-reinforced polymer composites
- Advanced Materials Characterization Techniques
- Quantum Dots Synthesis And Properties
- MXene and MAX Phase Materials
- Additive Manufacturing and 3D Printing Technologies
- High Entropy Alloys Studies
- Aluminum Alloys Composites Properties
- Graphene and Nanomaterials Applications
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- High-Temperature Coating Behaviors
- Semiconductor materials and devices
- Innovations in Concrete and Construction Materials
- 2D Materials and Applications
- Advanced materials and composites
- Diamond and Carbon-based Materials Research
- High Temperature Alloys and Creep
- Aluminum Alloy Microstructure Properties
- Thermal properties of materials
- Electrocatalysts for Energy Conversion
- Chalcogenide Semiconductor Thin Films
Korea Institute of Science and Technology
2016-2025
Daegu-Gyeongbuk Medical Innovation Foundation
2021
Jeonbuk Development Institute
2015-2020
Government of the Republic of Korea
2017-2020
Kyungpook National University
2017-2018
Korea Institute of Materials Science
2017
Chung-Ang University
2017
Seoul Women's University
2007-2017
Korea University of Science and Technology
2015
University of North Texas
1991-2012
Triple perovskite, Nd 1.5 Ba CoFeMnO 9−δ , enriched with oxygen defects shows high activity and durability as a bifunctional electrocatalyst.
Theoretical considerations suggest that the strength of carbon nanotube (CNT) fibers be exceptional; however, their mechanical performance values are much lower than theoretical values. To achieve macroscopic with ultrahigh performance, we developed a method to form multidimensional nanostructures by coalescence individual nanotubes. The highly aligned wet-spun single- or double-walled bundles were graphitized induce collapse and multi-inner walled structures. These advanced formed network...
We present a novel binder-free multiwall carbon nanotube (MWCNT) structure as an anode in Li ion batteries. The interface-controlled MWCNT structure, synthesized through two-step process of catalyst deposition and chemical vapor (CVD) directly grown on copper current collector, showed very high specific capacity, almost three times that graphite, excellent rate capability even at charging/discharging 3 C, no capacity degradation up to 50 cycles. Significantly enhanced properties this could...
Two-dimensional MoS2 is a promising material for next-generation electronic and optoelectronic devices due to its unique electrical optical properties including the band gap modulation with film thickness. Although has shown excellent properties, wafer-scale production layer control from single few layers yet be demonstrated. The present study explored large-scale thickness-modulated growth of atomically thin on Si/SiO2 substrates using two-step sputtering–CVD method. Our process exhibited...
We demonstrate the direct deposition of two-dimensional (2D) MoS<sub>2</sub>thin film on Cu-foil and polymer substrates, exhibiting an excellent capacitance outstanding cyclic stability. The MoS<sub>2</sub>based supercapacitors will enable new opportunities in flexible electronics energy devices.
Abstract Two-dimensional (2D) van der Waal (vdW) heterostructures composed of vertically-stacked multiple transition metal dichalcogenides (TMDs) such as molybdenum disulfide (MoS 2 ) and tungsten (WS are envisioned to present unprecedented materials properties unobtainable from any other material systems. Conventional fabrications these hybrid have relied on the low-yield manual exfoliation stacking individual 2D TMD layers, which remain impractical for scaled-up applications. Attempts...
Layered materials must be exfoliated and dispersed in solvents for diverse applications. Usually, highly energetic probe sonication may considered to an unfavourable method the less defective exfoliation dispersion of layered materials. Here we show that judicious use ultrasonic cavitation can produce transition metal dichalcogenide nanosheets extraordinarily non-toxic solvent by minimising sonolysis molecules. Our also lead defective, large graphene oxide from graphite a short time (within...
Nanocomposites reinforced with nano-scale reinforcements exhibit excellent mechanical properties low volume fraction of the reinforcement. For instance, only an addition 0.7 vol.% few-layer graphene (FLG) into pure titanium shows strength ~1.5 GPa, obviously much superior to that monolithic titanium. The strengthening efficiency composites is determined by several factors such as reinforcement geometrical/spatial characteristics and interfacial features between matrix metal-matrix...
Highly aligned GO gel fibers are fabricated under high extensional flow for efficient nanofluidic transport of ion species.
Many strategies for manufacturing high-performance carbon nanotube (CNT) fibers have been reported in the past decade. Although spinning is an essential process regardless of CNT pre-treatment method or fiber post-treatment route, little research has carried out into itself. During formation such through spinning, intra- and inter-bundle voids inevitably arise. The size amount these determines macroscopic properties fibers. Therefore, controlling internal key enhancing their properties. We...
Through a combination of aberration-corrected high-resolution scanning transmission electron microscopy and three-dimensional atom probe tomography, the true atomic-scale structure change in chemical composition across complex order-disorder interface metallic alloy has been determined. The study reveals presence two interfacial widths, one corresponding to an transition, other compositional transition interface, raising fundamental questions regarding definition width such systems.