A5019981733- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Hydrogen Storage and Materials
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Hybrid Renewable Energy Systems
- Conducting polymers and applications
- Membrane-based Ion Separation Techniques
- Ammonia Synthesis and Nitrogen Reduction
- Catalysis and Hydrodesulfurization Studies
- Electrochemical Analysis and Applications
- Nanoporous metals and alloys
- Advancements in Solid Oxide Fuel Cells
- Corrosion Behavior and Inhibition
- Magnesium Alloys: Properties and Applications
- Transition Metal Oxide Nanomaterials
- Anodic Oxide Films and Nanostructures
- Copper-based nanomaterials and applications
- Nuclear Materials and Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Semiconductor materials and devices
- Extraction and Separation Processes
Georgia Institute of Technology
2013-2025
Gwangju Institute of Science and Technology
2016-2025
Korea Advanced Institute of Science and Technology
2006-2016
Korea Institute of Science and Technology
2011-2015
AID Atlanta
2015
Kootenay Association for Science & Technology
2008
Transition metal dissolution is one of the major causes capacity and power fade in lithium-ion batteries employing transition oxides positive electrode. Accelerated testing was accomplished by introducing transition-metal salts electrolyte order to study effects on performance. It shown that a reduction cycle stability full cells. The SEI layer resistance negative electrode cells increases with increasing concentration salts. growth non-uniform believed be caused species leading an increase...
Abstract Lithium is perceived as an ideal anode for next generation batteries with high‐energy density. However, the critical issue of intractable growth Li dendrites, which leads to a poor cycling life, still remains. Herein, hierarchical surface designed and constructed on carbon fiber (CF) using binders in fabricated CF paper (CFP). The lightweight high mechanical properties facilitated establish 3D network structure alternative Cu foil. are transformed into oxygen‐containing amorphous...
We report electrospun Co-carbon nanofibers as an efficient ORR catalyst and a study of active site formation.
Abstract This study explores a facile method to prepare an efficient and durable support for Pt catalyst of polymer electrolyte membrane fuel cell (PEMFC). As candidate, Nb-doped TiO 2 (Nb-TiO ) nanofibers are simply fabricated using electrospinning technique, followed by heat treatment. Doping Nb into the leads drastic increase in electrical conductivity with doping level up 25 at. % (Nb 0.25 Ti 0.75 O ). nanoparticles synthesized on prepared -nanofibers (Pt/Nb-TiO as well commercial...
Enhancing the performance of rechargeable lithium (Li)–sulfur (S) batteries is one most popular topics in a battery field because their low cost and high specific energy. However, S experiences dissolution during its electrochemical reactions; hence, maintaining initial capacity challenging. Protecting cathode with Li ion conducting layer that acts as barrier for polysulfide transport an attractive strategy, but formation such protective layers typically involves significant effort cost....
Abstract Li-ion battery, separator, multicoreshell structure, thermal stability, long-term stability. A nanofibrous membrane with multiple cores of polyimide (PI) in the shell polyvinylidene fluoride (PVdF) was prepared using a facile one-pot electrospinning technique single nozzle. Unique multicore-shell (MCS) structure electrospun composite fibers obtained, which resulted from phase-separated polymer solution. Multiple PI core fibrils high molecular orientation were well-embedded across...
Abstract Li-ion batteries dominate portable energy storage due to their exceptional power and characteristics. Yet, various consumer devices electric vehicles demand higher specific with longer cycle life. Here we report a full-cell battery that contains lithiated Si/graphene anode paired selenium disulfide (SeS 2 ) cathode high capacity long-term stability. Selenium, which dissolves from the SeS cathode, was found become component of solid electrolyte interphase (SEI), leading significant...
Although lithium-sulfur (Li-S) batteries have 5-10 times higher theoretical capacity (1675 mAh g-1) than present commercial lithium-ion batteries, Li-S show a rapid and continuous fading due to the polysulfide dissolution in common electrolytes. Here, we propose use of sulfur-based cathode material, amorphous MoS3 reduced graphene oxide (r-GO) composite, which can be substituted for pure cathodes. In order enhance kinetics stability electrodes, intentionally pulverize microsized sheet into...
Several in-situ preparation methods of gel polymer electrolytes (GPEs) to develop long-lasting and safe lithium ion batteries (LIBs) recently have been reported. However, the reported still technical gaps for practical industrial uses in terms processing time, integrity with current production line, scalability. Here, we report an method prepare crosslinked poly(vinylene carbonate-co-cyanoethyl acrylate) (PVCEA) GPEs using 10 MeV electron beam (EB) irradiation a fully-assembled metallic...
Lithium (Li) metal anodes (LMAs) are promising anode candidates for realizing high-energy-density batteries. However, the formation of unstable solid electrolyte interphase (SEI) layers on Li is harmful stable cycling; hence, enhancing physical/chemical properties SEI important stabilizing LMAs. Herein, thiourea (TU, CH4 N2 S) introduced as a new catalyzing agent LiNO3 reduction to form robust inorganic-rich containing abundant Li3 N. Due unique molecular structure TU, TU molecules adsorb Cu...