Won Cheol Yoo
한양대학교 공과대학 화학공학과 · 공학
유 교수의 연구실은 주로 나노구조 소재의 설계 및 응용에 중점을 두고 있으며, 특히 메세포포어우수한 다공성 물질인 메세포포어실리카, MFI 제올라이트, 나노다공성 탄소 및 도핑된 탄소 소재를 활용한 에너지 변환 및 저장 장치 개발에 전문성을 기르고 있습니다. 고성능 슈퍼커퍼시터, 연료전지, 아연-공기 배터리 등에서의 응용을 목표로 하며, 이온 액체 및 이온겔 전해질과의 통합 설계를 통해 전기화학적 성능을 극대화하는 데 초점을 맞추고 있습니다. 특히, 고체상 이온 액체, 3D 정렬 다공성 탄소, 제올라이트 막 등 혁신적인 나노구조를 통한 기술적 도전 과제 해결에 기여하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The effects of confinement on the morphological development of the zeolite silicalite-1 were studied during hydrothermal synthesis in three-dimensionally ordered macroporous (3DOM) carbon monoliths. By scheduling multiple infiltration/hydrothermal reaction (IHT) steps using precursor solutions with high (H) or low nutrient content (L) in specific sequences, it was possible to obtain various zeolite morphologies of interest for technological applications. The special morphologies are also functio
MFI zeolite membranes with high flux and high separation factors for xylene isomer separation were fabricated by combining several unique processing steps. These include 1) use of brittle seeds prepared by confined synthesis, 2) rubbing and leveling methods to obtain randomly oriented seed layers, 3) secondary hydrothermal growth to produce thin zeolite films, and 4) rapid thermal processing to remove structure-directing agents while minimizing crack formation (see picture; scale bar 500 nm). De
ORR activity of Fe, Si, and N co-doped carbons (FeSiNCs) is first reported that DFT calculations reveal the origin of the ORR activity of FeSiNC, presenting excellent ORR activity and single-cell performances in Zn–air battery and AEMFC.
Abstract Ionic liquids (ILs) or solidified ionic liquids, known as ionogels, have been actively employed in supercapacitors (SCs) owing to their superior electrochemical stabilities to aqueous and organic electrolytes. However, initial efforts of using ILs and ionogels in SCs were not successful because bulky and sluggish ions cannot effectively access tiny pores of conventional microporous carbons. To address this, a strategy is developed to optimize the electrochemically active surfaces of car
In surfactant-induced, pseudomorphic transformations of submicrometer-sized nonporous spheres to mesoporous silica spheres, the surface morphologies of the products depend on the solvent used during the initial Stöber synthesis. After hydrothermal transformations employing cetyltrimethylammonium bromide (CTAB) as a surfactant, pseudomorphic products of parent silica spheres synthesized in ethanol (HT-SiO2-EtOH) are mesoporous throughout and have smooth surfaces. In contrast, products from sphere
The electrochemical performance of MOFs for supercapacitor and oxygen reduction reaction applications is significantly improved when conjugated with conductive and 3D connected nanoporous carbon matrices.
Cooking in a small pot: Uniform zeolite particles (see picture) can be prepared in high yield by hydrothermal syntheses within the confinement of inverse-opal carbon reactors. The product morphology depends on interfacial interactions at the reactor walls and on other parameters that can be engineered into the reactor process. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are ma
We investigated the carbon support microporosity effect on active site formation for the oxygen reduction reaction in Fe–N–C catalysts.
