A5100686277- Fuel Cells and Related Materials
- Advanced Battery Materials and Technologies
- Synthesis and properties of polymers
- Advancements in Battery Materials
- Liquid Crystal Research Advancements
- Membrane Separation Technologies
- Conducting polymers and applications
- Engineering Applied Research
- Advanced Surface Polishing Techniques
- Electrocatalysts for Energy Conversion
- Polymer Surface Interaction Studies
- Silicone and Siloxane Chemistry
- Advanced Battery Technologies Research
- Surface Modification and Superhydrophobicity
- Advanced Sensor and Energy Harvesting Materials
- Membrane-based Ion Separation Techniques
- Advanced battery technologies research
- Advanced machining processes and optimization
- biodegradable polymer synthesis and properties
- Antimicrobial agents and applications
- Graphene research and applications
- Advanced Polymer Synthesis and Characterization
- Supercapacitor Materials and Fabrication
- Graphene and Nanomaterials Applications
- Polymer crystallization and properties
Seoul National University
2016-2025
Kwangwoon University
2024-2025
Soongsil University
2025
Bristol-Myers Squibb (United States)
2018-2024
Korea University
2013-2022
Hanyang University
2005-2022
Seoul National University Bundang Hospital
2019-2022
LG Chem (South Korea)
2022
Seoul Institute
2017-2021
Government of the Republic of Korea
2014-2021
Highly dendrite-suppressing gel polymer electrolytes for lithium metal batteries are presented utilizing perfluoropolyether-functionalized 2D boron nitride nanoflakes as a multifunctional additive.
Polyamide reverse osmosis (RO) membranes with carbon nanotubes (CNTs) are prepared by interfacial polymerization using trimesoyl chloride (TMC) solutions in n-hexane and aqueous of m-phenylenediamine (MPD) containing functionalized CNTs. The CNTs the reactions pristine acid mixture (sulfuric nitric 3:1 volume ratio) varying amounts acid, reaction temperature, time. an optimized condition found to be well-dispersed polyamide layer, which is confirmed from atomic force microscopy, scanning...
Development of localized inflammatory environments by M1 macrophages in the cardiac infarction region exacerbates heart failure after myocardial (MI). Therefore, regulation inflammation and their timely polarization toward regenerative M2 suggest an immunotherapy. Particularly, controlling cellular generation reactive oxygen species (ROS), which cause differentiation, developing macrophage phenotypes propose a therapeutic approach. Previously, stem or dendritic cells were used MI for...
Au(I)–alkanethiolates (Au(I)–SRs, R = –(CH2)nH, n 2−10, 12, 14, 16, and 18) are synthesized by mixing gold salt, HAuCl4, n-alkanethiols in tetrahydrofuran. Au(I)–SRs show a highly ordered layer structure, the ordering increases as length of alkyl chain increases. with ≥ 4 emit bright orange-red light (λem ∼ 610 nm) visible to naked eye upon irradiation UV light, emission intensity increasing chain. We also found that noticeable aurophilic interactions between Au(I)–Au(I) exist for longer...
A series of composite polymer electrolytes containing poly(ethylene glycol)-grafted graphene oxide fillers were prepared for all-solid-state lithium-ion battery applications.
Nanocomposite membrane containing CNTs and GO exhibits considerably improved performances by the synergistic combinations of GO, which can increase dispersity in a polymeric matrix.
Here we report new H3PO4-doped cross-linked benzoxazine–benzimidazole copolymer membranes showing high proton conductivity and long-term durability for use in proton-exchange membrane fuel cells at elevated temperatures (>100 °C). The were prepared by mixing of poly[2,2′-(m-phenylene)-5,5′-bibenzimidazole] (PBI) with 3-phenyl-3,4-dihydro-6-tert-butyl-2H-1,3-benzoxazine (pBUa) N,N-dimethylacetamide, subsequent stepwise heating to 220 °C, even large-sized films (30 cm × 140 m) could be easily...
The reliability and durability of energy storage devices are as important their essential characteristics (e.g., power density) for stable output long lifespan thus much more crucial under harsh conditions. However, extreme conditions is still a big challenge because unavoidable performance decays the inevitable damage components. Here, we report high-temperature operating, flexible supercapacitors (f-SCs) that can provide reliable severe electrochemical, mechanical, thermal outstanding...
H2SO4-doped dense polybenzimidazole (PBI) membranes based on poly[2,2′-(2-benzimidazole-p-phenylene)-5,5′-bibenzimidazole] (BIpPBI) containing benzimidazole side groups were developed for use in vanadium redox flow batteries (VRFBs). BIpPBI was prepared by the polycondensation of 3,3′-diaminobenzidine with 2-benzimidazole terephthalic acid (BITA) polyphosphoric acid. Many basic properties characterized and compared conventional PBI (mPBI). The membrane has an entirely amorphous structure...
The membrane filtration process has received much attention as one of the most promising water purification techniques. However, it still several disadvantages, such organic‐, oil‐, and biofouling, contamination by microorganisms, difficulty in rejecting heavy metal ions, which are closely related to surface properties. Various approaches have been used prepare membranes with antifouling, antimicrobial, or ion removal properties on their surfaces. all these not yet reported. It might be...
A series of organic/inorganic hybrid block and random copolymers were prepared by reversible addition–fragmentation chain transfer (RAFT) polymerization using poly(ethylene glycol) methyl ether methacrylate (PEGMA) 3-(3,5,7,9,11,13,15-heptaisobutylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane-1-yl)propyl (MA-POSS) as monomers in order to study the effect polymer morphology POSS content on properties electrolytes. Flexible dimensionally stable free-standing films made from mixed with lithium...
Sulfonated poly(arylene ether sulfone) (SPAES) composite membranes were prepared using thermally-treated graphene oxide (GO) and poly(2,5-benzimidazole)-grafted (ABPBI-GO) as fillers for proton exchange membrane fuel cell (PEMFC) applications.
Sulfonated poly(arylene ether sulfone) membranes with cross-linked structures (C-SPAES) were simply prepared by simultaneously casting and heating the polymer solutions composed of sulfonated azidomethyl side groups (SPAES-N3), cross-linkers such as 1,4-diethynylbenzene 4,4′-diazido-2,2′-stilbenedisulfonic acid disodium salt tetrahydrate, a click reaction catalyst CuBr N,N,N′,N″,N″-pentamethyldiethylenetriamine in N,N-dimethylacetamide, where SPAES-N3 substitution PAES (SPAES) through...
Gel polymer electrolytes (GPEs) based on semi-interpenetrating network (IPN) structure for lithium-ion batteries were prepared by mixing boron-containing cross-linker (BC) composed of ethylene oxide (EO) chains, cross-linkable methacrylate group, and anion-trapping boron moiety with poly(vinylidene fluoride) (PVDF) followed ultraviolet light-induced curing process. Various physical electrochemical properties the GPEs systematically investigated varying EO chain length content. Dimensional...
Carboxylate-functionalized polymers of intrinsic microporosity (PIMs) are promising materials for gas separation application. However, highly carboxylate-functionalized PIMs (HCPIMs) have not been reported owing to overlooked intermediate products. Herein, we successfully prepared HCPIMs (∼92 mol % carboxylic acid group) through a prolonged alkaline hydrolysis process (360 h). were found be soluble in various organic solvents, such as tetrahydrofuran and dimethyl sulfoxide, then...
A central challenge in practically using high-capacity silicon (Si) as anode materials for lithium-ion batteries is alleviating significant volume change of Si during cycling. One key to resolving the failure issues exploiting carefully designed polymer binders exhibiting mechanical robustness retain structural integrity electrodes, while concurrently displaying elasticity and toughness effectively dissipate external stresses exerted by changes Si. Herein, a highly elastic tough binder...
Here, we present the synthesis and characterization of a novel 2D crystalline framework, named C2O, which mainly consists carbon oxygen in 2:1 molar ratio features crown ether holes its skeletal structure. The covalent-frameworked can be synthesized on gram-scale exhibits fine chemical stability various environments, including acid, base, different organic solvents. C2O efficiently activates KI through strong coordination K+ with rigid enhances nucleophilicity I– significantly improves...