A5023160283- Metallurgical Processes and Thermodynamics
- Molten salt chemistry and electrochemical processes
- Solidification and crystal growth phenomena
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Bauxite Residue and Utilization
- Iron and Steelmaking Processes
- High-Temperature Coating Behaviors
- Metal and Thin Film Mechanics
- Aluminum Alloy Microstructure Properties
- Hydrogen Storage and Materials
- Phase-change materials and chalcogenides
- Magnesium Alloys: Properties and Applications
- Metallic Glasses and Amorphous Alloys
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- High Temperature Alloys and Creep
- GaN-based semiconductor devices and materials
- Microstructure and Mechanical Properties of Steels
- Graphene research and applications
- Semiconductor materials and devices
- Fluid Dynamics and Thin Films
- Materials Engineering and Processing
- Hybrid Renewable Energy Systems
- Silicon and Solar Cell Technologies
Seoul National University
2016-2025
China University of Geosciences (Beijing)
2024-2025
Materials Science & Engineering
1999-2007
Abstract Prelithiation is of great interest to Li‐ion battery manufacturers as a strategy for compensating the loss active Li during initial cycling battery, which would otherwise degrade its available energy density. Solution‐based chemical prelithiation using reductive promises unparalleled reaction homogeneity and simplicity. However, chemicals applied so far cannot dope in Si‐based high‐capacity anodes but merely form solid–electrolyte interphases, leading only partial mitigation cycle...
A one-dimensional heat conduction model is developed for a phase change random access memory device with an 8F2 cell structure (F=0.15 μm). The required current level reset operation, which corresponds to the switching from crystalline (“1” state) amorphous (“0” of Ge2Sb2Te5, was investigated by calculating temperature profiles structure. It revealed that operation not achieved at (2 mA) reported existing devices subquarter micron plug size when only TiN used as resistive heater. However, it...
BH 4 -substituted argyrodite solid electrolytes are mechanically softer and achieve near-theoretical density at lower pressures room temperature compared to Cl- or Br-substituted counterparts, which is consistent with nanoindentation test results.
For the sake of studying influence covalent cross-linking on properties layered carbon structure. In this work, a bilayer graphene with larger layer distance supported...
The circulation flow rate of a steel melt, which is one the important factors determine decarburization RH system, was calculated by using 3-dimensional numerical simulation technique. A new model for evaluating shape and volume plume zone, formed Ar gas blown through multiple nozzles on wall snorkel, proposed to driving force melt circulation. Circulation rates were measured in 1/10 scale water real system verify thecalculation results with good agreement rates. Because computer program can...
A green and effective electrolytic process was developed to produce high-purity Mg metal using primary secondary resources containing MgO as a feedstock. The electrolysis of various conducted Cu cathode in MgF2 – LiF KCl molten salt at 1043 K by applying an average current 1.44 for 12.5 h. calcined North Korean magnesite seawater clinker yielded alloys MgCu2 (Cu) phases with efficiencies 89.6–92.4%. oxidized MgO-C refractory brick, aged ferronickel slag, slag 59.3–92.3%. vacuum distillation...
In this study, focused ion beam (FIB) and transmission electron microscopy (TEM) were used to investigate the morphology, composition, crystal structure, phase interface growth orientation of LaAlO3-Ti(C,N)-(Ti,Nb,Mo)C complex inclusion in GH4742 alloy. Based on theory lattice mismatch thermodynamic model formation, formation mechanism composite inclusions was studied. Crystallographic analysis showed that Ti(C,N) grew LaAlO3 substrate, its restricted by parallel relationship with substrate....
Melt circulation as a function of the operating conditions and dimensions RH system were calculated using 3-dimensional numerical model. This model was developed with considering driving force by gas blowing for melt verified from both water experiments real process results.Using model, influences various parameters on investigated. The can be divided into two categories, system. effects each such flow rate, pressure vacuum vessel submerged depth snorkel rate studied. In addition, dimension...
Solid electrolyte is a crucial component of all-solid-state batteries, with sulphide solid electrolytes such as lithium argyrodite being closest to commercialization due their high ionic conductivity and formability. In this study, borohydride/halide dual-substituted argyrodite-type electrolytes, Li
We report an electric-field-induced directional mass movement of in bottleneck geometry. Under high-electric-stress circumstances , a tends to move toward the cathode (−) by remaining depletion at anode (+). The high electric stress induces asymmetric compositional separation such that Sb is distributed whereas Te Ionicity temperature and can be one origins behavior. may provide insight on device reliability phase-change random access memory.