A5025799010- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Conducting polymers and applications
- Advanced Battery Technologies Research
- Tribology and Wear Analysis
- Supercapacitor Materials and Fabrication
- Heat Transfer Mechanisms
- Perovskite Materials and Applications
- Tribology and Lubrication Engineering
- Thermal Expansion and Ionic Conductivity
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Image and Video Retrieval Techniques
- Fluid Dynamics and Turbulent Flows
- Membrane-based Ion Separation Techniques
- Lubricants and Their Additives
- Advancements in Solid Oxide Fuel Cells
- Robotics and Sensor-Based Localization
- Aerodynamics and Acoustics in Jet Flows
- Energy Efficient Wireless Sensor Networks
- Molecular Junctions and Nanostructures
Kia Motors (South Korea)
2024
Yonsei University
2002-2018
Pusan National University
2012
Korea Advanced Institute of Science and Technology
2010
Kootenay Association for Science & Technology
2010
Polytetrafluoroethylene (PTFE)-based dry process for lithium-ion batteries is gaining attention as a battery manufacturing scheme can be simplified with drastically reducing environmental damage. However, the electrochemical instability of PTFE in environment has hampered realization high-performance dry-processed anode. In this study, we present non-electroconductive and highly ionic-conductive polymer coating on graphite to mitigate degradation binder minimize resistance. Poly(ethylene...
We report a facile universal patterning method that provides well-arrayed patterns of polymer electrolyte membranes with large electrochemical area using an elastomeric mold. The membrane electrode assembly fabricated patterned Nafion exhibited high current density.
Well-designed electronic configurations and structural properties of electrocatalyst alter the activity, stability, mass transport for enhanced catalytic reactions. We introduce a nanofibrous oxide–carbon composite by an in situ method carbon nanofiber (CNF) growth highly dispersed Ni nanoparticles that are exsoluted from NiTiO3 surface. The feature has 3D web structure with improved mass-transfer at electrode. In addition, design CNF/TiO2 support allows complex excellent stability activity...
Abstract The vanadium redox flow battery (VRB) is an attractive energy storage technology due to its great advantages such as high efficiency and long life cycle. A carbon electrode has been commonly used the material for VRB system. In this study, effects of microwave treatment on are investigated under different powers (0, 500, 650 W). microwave‐treated about twice large pristine in specific surface area, showing 2.72, 4.46, 4.63 m 2 g −1 at 0, W, respectively. oxygen‐containing functional...
For the first time, a novel V(IV)/V(V) electrolyte based on H2C2O4 was developed for stable vanadium redox flow battery, which exhibits significantly improved reversibility and reaction kinetics with carbon-based electrodes, impressive charge–discharge capacities.
An experimental investigation has been conducted on the impingement of underexpanded, axisymmetric, and supersonic jets a flat plate. The surface pressure adiabatic wall temperature distributions plate have measured in detail at small nozzle-to-plate distances. influences ratio, exit Mach number, distance, impinging angle considered. for jet are affected significantly by distance existence stagnation bubble central region
The organic-inorganic composite membrane in polymer exchange fuel cells (PEMFCs) have several fascinating technological advantages such as a proton conductivity, thermal stability and mechanical properties. As the inorganic filler, silicon carbide (SiC) fiber been used various fields due to its unique properties stability, tensile strength. In this study, was successfully fabricated by modified-silicon fiber. Modified process, novel process SiC, takes reaction phosphoric acid after oxidation...
Fuel cell is one of the most promising electrochemical energy conversion devices that has many advantages such as high efficiency, power density, CO 2 free, noise rapid start up, etc. Especially, polymer electrolyte membrane fuel (PEMFC) been shown a lot attention due to its density and relatively good portability. Generally, Pt supported on carbon black used an electrocatalyst in PEMFC. However, corrosion main problem for electrode structure collapse catalyst activity loss, which can be...
Carbon materials are mainly used as catalyst supports for polymer exchange membrane fuel cell (PEMFC). Catalyst required specific characteristics of the carbon materials, such large surface area and high electrical conductivity. Attempted were to improve conductivity maintain using a microwave treatment. Microwave treatment, relatively new technique, takes short reaction time reduce consumption gases treatment compared traditional heat Hybrid (ACF/Graphene) by microwave-irradiation method...
With the recent development of hardware technologies, vision sensor networks (VSNs) are widely deployed to communicate with environments. One key issues in a VSN is build topology graph and localize sensors network precisely dynamically. This paper proposes framework for estimating dynamic configuration localizing using graph. In paper, it assumed that intrinsic parameters each already known, only one localized, overlapped at least sensor. order determine position orientation rest sensors,...
Fuel cell is one of the most promising electrochemical energy conversion devices which withholds many advantages; high efficiency, power density, rapid start up, any significant pollutant, etc. Especially, polymer electrolyte membrane fuel (PEMFC) has been shown a lot attention due to its density and relatively good portability. Commonly, Pt/C catalyst used as PEMFC because it surface area, electrical conductivity, appropriate pore structure. However, carbon support materials suffer from...
As interest in climate change has increased recent years, research on alternative energy sources is becoming more active. Fuel cells are one of the most promising electrochemical conversion devices that hold many advantages. In particular, polymer electrolyte fuel (PEMFCs) attracting much attention due to their high power density and relatively good portability. PEMFC systems, main cost catalyst terms platinum group metals. This derives need understand way how get a highly active stable...