A5100359551- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Advancements in Photolithography Techniques
- 3D IC and TSV technologies
- Analytical Chemistry and Sensors
- Fuel Cells and Related Materials
- Electrowetting and Microfluidic Technologies
- Nanofabrication and Lithography Techniques
- Extraction and Separation Processes
- GaN-based semiconductor devices and materials
- Advanced Sensor and Energy Harvesting Materials
- Graphene research and applications
- Click Chemistry and Applications
- Biosensors and Analytical Detection
- Quantum and electron transport phenomena
- Lanthanide and Transition Metal Complexes
- Machine Learning in Materials Science
- Growth Hormone and Insulin-like Growth Factors
- Photochromic and Fluorescence Chemistry
- Membrane-based Ion Separation Techniques
- Electrochemical sensors and biosensors
- Polydiacetylene-based materials and applications
Hongik University
2025
Chungnam National University
2014-2024
Seoul National University
2013-2023
Hyundai Motors (South Korea)
2023
Hyundai Motor Group (South Korea)
2022
Korea Research Institute of Chemical Technology
2018-2021
Government of the Republic of Korea
2014-2021
University of Seoul
2015-2021
Daejeon University
2014-2021
Seoul Institute
2017-2020
The solvent-free manufacturing process for battery electrodes has gathered increased scientific interest due to its cost reduction, eco-friendliness, and ability enhance electrode density. Carbon nanotubes (CNTs) are anticipated improve performance, owing their exceptional electrical conductivity unique one-dimensional morphology. In this study, we demonstrate that the integration of ozone treatment CNTs can further electrochemical performance high-loading (30 mg/cm2 or higher) dry-processed...
Abstract Li‐O 2 batteries are promising next‐generation energy storage systems because of their exceptionally high density (≈3500 W h kg −1 ). However, to achieve stable operation, grand challenges remain be resolved, such as preventing electrolyte decomposition and degradation carbon, a commonly used air electrode in batteries. In this work, using situ differential electrochemical mass spectrometry, it is demonstrated that the application ZnO coating on carbon can effectively suppress side...
Abstract Li metal, which has a high theoretical specific capacity and low redox potential, is considered to the most promising anode material for next‐generation ion‐based batteries. However, it also exhibits disadvantageous solid electrolyte interphase (SEI) layer problem that needs be resolved. Herein, an advanced separator composed of reduced graphene oxide fiber attached aramid paper (rGOF‐A) introduced. When rGOF‐A applied, F − anions, generated from decomposition LiPF 6 during SEI...
The ammonia-free coprecipitation process using citric acid as a new chelating agent successfully produced micro-sized spherical Ni<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>(OH)<sub>2</sub> precursor and well-performed cathode active material LiNi<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>O<sub>2</sub> for Li-ion batteries.
Nanoporous anodic aluminium oxide (AAO) enables the direct utilization of lithium metal as an ideal anode, owing to a uniform current distribution. The electrochemical performance AAO separator is superior commercial polypropylene, in terms ionic conductivity, discharge capacity, and capacity fading.
A chelating-agent-assisted Na<sub>2/3</sub>Fe<sub>1/2</sub>Mn<sub>1/2</sub>O<sub>2</sub> material showed enhanced electrochemical performance due to the formation of a thin and stable solid-electrolyte interface layer.
The remarkable cycling performance of VO<sub>x</sub> nanotubes originates from the trivalent vanadium ions generated in highly reduced nanotubes.
Bimetallic SnSb has significantly attracted attention as a Na-ion battery (SIB) anode owing to its higher theoretical capacity of 752 mAh g−1 compared conventional hard carbon anodes. However, practical...
This paper describes a simple design methodology to develop layered PtSe2 catalysts for hydrogen evolution reaction (HER) in water electrolysis operating under ultralow overpotentials. approach relies on the transfer of mechanically exfoliated flakes gold thin films prestrained thermoplastic substrates. By relieving prestrain, tunable level uniaxial internal compressive and tensile strain is developed as result spontaneously formed surface wrinkles, giving rise band structure modulations...
4 V-operated all solid symmetrical supercapacitors that employ mixtures of various weight compositions with c-P<sub>4</sub>VPh and EMITFSI electrolytes have been demonstrated characterized.
We propose a facile and cost-effective strategy for stabilizing the lithium metal–electrolyte interface <italic>via</italic> three-dimensional stainless steel mesh (SSM) interlayer.
Conjugated Carbon Networks (CCN) contribute to the stabilization of Li metal anode surface by fluorinated metathesis.
Siloxane-capped amorphous nano-SiOx/graphite was prepared by simple reduction and self-organization, facile particle dispersion. 92% capacity retention of the composite anode is ascribed to effective accommodation volume change, uniform distribution SiOx on graphite matrix.
A copper-embedded reduced graphene oxide (CRGO) fiber-based sensor exhibited chemical sensitive/temperature insensitive or insensitive/temperature sensitive characteristics, depending on the Cu concentration in CRGO.
The artificial SEI layer that includes LiF can be fabricated simply through thermal curing of an F rich material on the surface Li metal. proposed design offers alternative strategy for stabilizing
Although genome-wide association studies (GWAS) have substantially contributed to understanding the genetic architecture, unidentified variants for complex traits remain an issue. One of efficient approaches is improvement power GWAS scan by weighting P values with prior linkage signals. Our objective was identify novel candidates obesity in Asian populations using genemapping strategies that combine and analyses. To obtain information body mass index (BMI) waist circumference (WC), we...
Diphylleia grayi-inspired hydrochromic nano/microstructured films have received much attention for its promising smart applications owing to their simple and low-cost but energy-effective strategy. A new type of water-switchable glazing film patterned with various nano/micro air-hole inverse opal arrays is introduced by selectively removing nano/microsphere polystyrene embedded in the surface polydimethylsiloxane (PDMS) films. Using significant contrast ratio bleaching scattering states, we...
The electrochemical cycling performance of vanadium oxide nanotubes (VOx-NTs) for Mg-ion insertion/extraction was investigated in acetonitrile (AN) and tetramethylsilane (TMS)-ethyl acetate (EA) electrolytes with Mg(ClO4)2 salt. When cycled TMS-EA solution, the VOx-NT exhibited a higher capacity retention than when AN solution. significant degradation solution resulted from increased charge-transfer resistance caused by reaction products electrolyte during cycling. Mixed solvent systems can...
Using ultraviolet photoemission spectroscopy and x-ray spectroscopy, we have investigated the electronic properties of interfaces between copper phthalocyanine (CuPc) films gallium-polar (Ga-polar) nitrogen-polar (N-polar) GaN surfaces, respectively. Prior to deposition CuPc films, clean Ga-polar N-polar surfaces exhibited about 0.6 0.13 eV upward band bendings, respectively, showing influence states on surface termination growth direction. With ultrathin layers CuPc, no additional bending...
Here, we have developed a redox-responsive folate–fluorophore conjugate with disulfide linker for the target-specific activatable fluorescence imaging of cancers.
Lithium is spotlighted as the next‐generation battery anode owing to its low potential and high theoretical capacity. However, volume changes dendrite issues hinder practical use an material. Several metallic protective layers are used overcome these problems. a comprehensive understanding of material properties structure within electric field required determine their suitability layers. Herein, reactivity with Li copper stainless steel (SS) meshes compared, which active inactive layers,...