Oh Joong Kwon
서울대학교 에너지화학공학과 · 공학
오중권 교수의 연구실은 전이금속 기반 질소 도핑 탄소 복합체를 활용한 고효율 전기촉매 기술 개발에 초점을 맞추고 있으며, 특히 산소 환원 반응(ORR)과 수소/산소 발생 반응을 위한 비백금 계 촉매 및 다공성 전도체 재료의 설계와 응용을 중심으로 연구를 진행하고 있습니다. 특히 폴리아닐린 유도체를 기반으로 한 일괄적 합성 공정을 통해 저비용·고성능 촉매를 개발함으로써 연료전지 및 수소 에너지 시스템의 상용화를 견인하고자 합니다. 연구는 전기화학적 에너지 변환 장치의 핵심 소재인 다공성 전송층(PTL), 촉매 매트릭스, 나노복합재의 구조-성능 관계를 깊이 있게 분석하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
This study, unlike previous ones, is the first to show a significant association between HLA class II alleles and MS in the Jewish population. The association with the HLA-DR2-related haplotype is similar to that among non-Jewish white patients with MS. Moreover, our data support the possibility that DRB1*1501 is the susceptibility allele responsible for the association between this haplotype and MS in the Jewish population. Our study also underscores differences in HLA profiles between Ashkenaz
Nitrogen-doped carbon-encapsulated non-noble metals are promising electrocatalytic alternatives to Pt for the oxygen reduction reaction (ORR). Herein, we describe the efficient synthesis of nitrogen- and fluorine-doped carbon-encapsulated Fe/Fe<sub>3</sub>C (NFC@Fe/Fe<sub>3</sub>C) crystals from a Fe-poly(aniline-fluoro-aniline) co-polymer and demonstrate their use as efficient ORR electrocatalysts in acidic and alkaline environments. X-ray diffraction patterns, scanning electron microscopy, tra
A novel investigation was performed on fluorine-rich carbon shell formation on metal (Fe/Co/FeCo) surfaces and their contribution to capacitance enhancement was evaluated.
Abstract More active electrocatalysts for H 2 and O 2 evolution reactions, efficient membranes, and robust porous transport layers (PTL) are required for designing advanced proton exchange membrane water electrolysis (PEMWE) systems. An N‐doped carbon matrix is introduced in this study to surpass the existing Ti PTLs. One‐step pyrolysis results in the carbonization of polyaniline films to the N‐doped carbon matrix, simultaneous formation of desiccation cracks and Ir x Ru y nanoparticles, and par
Summary Investigation of the anode porous transport layer (PTL) is crucial for the commercialization of anion‐exchange membrane water electrolysis (AEMWE). Recently, nickel foam (Ni‐foam) has been employed as an alternative to the conventional titanium‐based PTL (Ti‐felt) and strategies to improve its performance and durability have been developed. However, few studies have investigated the effect of pore structures in Ni‐foam and the applications of other Ni‐based PTLs have not been reported. I
The development of a low cost and highly active alternative to the commercial Pt/C catalysts used in the oxygen reduction reaction (ORR) requires a facile and environmentally-friendly synthesis process to facilitate large-scale production and provide an effective replacement. Transition metals, in conjunction with nitrogen-doped carbon, are among the most promising substitute catalysts because of their high activity, inexpensive composition, and high carbon monoxide tolerance. We prepared a poly
