서울대학교 · Engineering
Jong-Chan Lee 교수의 연구실은 고성능 에너지 저장 소자, 특히 리튬 금속 이차전지와 연료전지의 핵심 소재인 고분자 전해질 및 막 기반 소재를 중심으로 연구를 진행하고 있습니다. 주로 나노복합재료, 고분자 구조 설계, 표면 기능화를 통해 이온 전도도 향상, 리튬 덱스터리 성장 억제, 내구성 및 저오염 성능을 동시에 확보하는 다기능 소재를 개발하고 있습니다. 특히, 고분자 전해질, 나노복합막, 생체 유사 고분자 기반 소재의 합성 및 응용에 초점을 맞추고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Highly dendrite-suppressing gel polymer electrolytes for lithium metal batteries are presented utilizing perfluoropolyether-functionalized 2D boron nitride nanoflakes as a multifunctional additive.
The ring-opening polymerization of ethylene carbonate (EC) using KOH as initiator was investigated by changing the EC/KOH ratios and the reaction temperatures. The ratio of the rate of polymerization to chain scission increases as the temperature rises. Hydrolysis results and polymer composition data indicate that polymer chains are formed initially by attack of the active polymer chain end (the alcoholate anion) on ethylene carbonate: one attack at the carbonyl group followed by two attacks at
Nanocomposite membrane containing CNTs and GO exhibits considerably improved performances by the synergistic combinations of CNTs and GO, which can increase the dispersity in a polymeric matrix.
The membrane filtration process has received much attention as one of the most promising water purification techniques. However, it still has several disadvantages, such as organic‐, oil‐, and biofouling, membrane contamination by microorganisms, and the difficulty in rejecting heavy metal ions, which are closely related to the membrane surface properties. Various approaches have been used to prepare membranes with antifouling, antimicrobial, or heavy metal ion removal properties on their surfac
Sulfonated poly(arylene ether sulfone) (SPAES) composite membranes were prepared using thermally-treated graphene oxide (GO) and poly(2,5-benzimidazole)-grafted graphene oxide (ABPBI-GO) as fillers for proton exchange membrane fuel cell (PEMFC) applications.
Star-shaped polymers were prepared by atom transfer radical polymerization (ATRP) using poly(ethylene glycol) methyl ether methacrylate (PEGMA) and methyl methacrylate (MMA) as monomers and polyhedral oligomeric silsesquioxane (POSS) as a core material. Linear copolymers from PEGMA and MMA were also prepared for comparison purposes. Polysulfone (PSf) ultrafiltration membranes coated with the star-shaped polymer showed larger fouling resistance and flux recovery than those coated with the linear-
Polyamide reverse osmosis (RO) membranes with deposited carbon nanotubes (CNTs) coated with poly(vinyl alcohol) (PVA) on the surface were prepared by interfacial polymerization followed by the deposition of oxidized CNTs and the coating of PVA on the surface. The polyamide membrane with the oxidized CNTs and PVA coating (PA–CNT–PVA membrane) showed much improved mechanical properties and durability compared with the polyamide membrane without CNTs (PA membrane). The PA–CNT–PVA membrane also exhi
