A5100772899- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Food Quality and Safety Studies
- Radiation Effects and Dosimetry
- Advanced Battery Technologies Research
- Nutrition, Health and Food Behavior
- Extraction and Separation Processes
- Semiconductor materials and devices
- Advanced battery technologies research
- Synthetic Organic Chemistry Methods
- Semiconductor materials and interfaces
- Agriculture, Soil, Plant Science
- Quantum Dots Synthesis And Properties
- Seaweed-derived Bioactive Compounds
- Graphene research and applications
- MXene and MAX Phase Materials
- Meat and Animal Product Quality
- Advanced materials and composites
- Hydrogen Storage and Materials
- Conducting polymers and applications
- Perovskite Materials and Applications
- Aluminum Alloys Composites Properties
- Asymmetric Synthesis and Catalysis
- Transition Metal Oxide Nanomaterials
Ulsan National Institute of Science and Technology
2025
Kookmin University
2015-2024
Korea Institute of Toxicology
2024
Inha University
2023
Korea Institute of Industrial Technology
2020-2023
Materials Science & Engineering
2007-2022
Seoul National University
2002-2021
Pusan National University
2020
Government of the Republic of Korea
2018
Korea Atomic Energy Research Institute
2006-2015
We report on the synthesis and electrochemical properties of oriented NiO-TiO(2) nanotube (NT) arrays as electrodes for supercapacitors. The morphology films prepared by electrochemically anodizing Ni-Ti alloy foils was characterized scanning transmission electron microscopies, X-ray diffraction, photoelectron spectroscopies. morphology, crystal structure, composition NT were found to depend preparation conditions (anodization voltage postgrowth annealing temperature). Annealing as-grown a...
SiO2 is one of the most abundant materials on Earth. It cost-effective and also environmentally benign when used as an energy material. Although was inactive to Li, it engineered react directly by a simple process. exhibited strong potential promising anode for Li-ion batteries.
A new approach for enhancing the electrochemical performance of carbon felt electrodes by employing non-precious metal oxides is designed. The outstanding electro-catalytic activity and mechanical stability Mn3O4 are advantageous in facilitating redox reaction vanadium ions, leading to efficient operation a flow battery.
Commercially available solid SiO is composed of amorphous Si with silicon suboxides various valence states. Solid thermodynamically unstable at all temperatures, which would disproportionate to and SiO2. Disproportionation several temperatures was characterized analytical techniques, such as XRD, XPS, NMR HRTEM methods, it found that the sample heat treated 1000 °C contained well-developed nanocrystals uniformly dispersed within an SiOx matrix. Using this sample, a nano-Si/SiOx/graphite...
A general template-assisted electrochemical approach was used to synthesize three-dimensional ordered Ni core-NiO shell inverse opals (IOs) as electrodes for supercapacitors. The Ni-NiO IO displayed pseudo-capacitor behavior, good rate capability and cycling performance.
A practical route is introduced for synthesizing a sulfur-impregnated graphene composite as promising cathode material lithium–sulfur batteries. Sulfur particles with size of few microns are successfully grown in the interior spaces between randomly dispersed sheets through heterogeneous crystal growth mechanism. The proposed not only enables control particle active sulfur but also affords quantitative yields powder large quantities. We investigate potential use owing to its advantages...
We report on the synthesis and electrochemical properties of oriented anatase TiO2 nanotube (NT) arrays as electrodes for Li-ion batteries. The NT displayed both pseudocapacitive Li+ storage associated with surface within bulk material. relative contribution storages depends strongly scan rate. While charges are stored primarily in at low rates (≪1 mV/s), dominates total capacity higher (>1 mV/s). a function charge/discharge showed no dependence film thickness, suggesting that...
Silicon oxide (SiO) has attracted much attention as a promising anode material for Li-ion batteries. The lithiation of SiO results in the formation active Li–Si alloy cores embedded an inactive matrix consisting Li-silicates (Li2Si2O5, Li6Si2O7, and Li4SiO4) Li2O. maximum Li content lithiated (LixSiO) is known to be x = 4.4 based on experiments. Our calculations reveal that are dominant over Li2O among components experimental Li4.4SiO phase. We show LixSiO can become thermodynamically more...
A titanium dioxide (TiO2) surface coating was applied to improve both the electrochemical and thermal properties of SiO as a high energy density anode for Li-ion batteries. nano-scale, thin anatase TiO2 achieved using facile sol–gel process, coated non-coated were characterized various analytical methods. Increased initial Coulombic efficiency reversible capacity observed in TiO2-coated SiO, which resulted 30% increase volumetric compared that bare SiO. Furthermore, remarkably suppressed...