Dukjoon Kim
성균관대학교 공과대학 기계공학부 · 공학
Dukjoon Kim 교수의 연구실은 고성능 에너지 변환 및 저장 소재, 특히 연료전지와 리튬이온 배터리의 안정성과 효율성을 향상시키는 데 초점을 맞추고 있습니다. 주로 고분자 기반 전해질 막의 화학적 안정성 향상과 이온 전도도 향상을 위해 나노복합재료, 예를 들어 세륨 도핑된 그래핀 옥사이드나 질화갈륨 기반 나노입자를 활용한 하이브리드 막을 개발하고 있습니다. 또한, 고분자 구조 설계를 통해 이온 이동 메커니즘을 최적화하고, 안정성과 유연성을 동시에 확보하는 새로운 전해질 시스템을 개발하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
<sup>•</sup>OH radicals are the main cause of chemical degradation of Nafion membranes in fuel cell operation. Although the cerium ion (Ce<sup>3+/4+</sup>, Ce) is reported as an effective <sup>•</sup>OH radical quencher, its membrane application has critical limitations associated with the reduction of membrane proton conductivity and its leaking. In this study, the Ce-grafted graphitic carbon nitrides (g-C<sub>3</sub>N<sub>4</sub>) (CNCe) nano-particles are synthesized and embedded in Nafion me
A novel anion exchange membrane was synthesized via crosslinking of the quaternized polyepichlorohydrin (QPECH) by 1-(3-aminopropyl) imidazole grafted poly(arylene ether ketone) (PAEK-API). While the QPECH provided an excellent ion conductive property, the rigid rod-structured PAEK-API played a reinforcing role, along with providing the high conductivity associated with the pendant API group. The chemical structure of QPECH/PAEK-API membranes was identified by <sup>1</sup>H nuclear magnetic reso
Investigation of the collaborative effect of cerium particles embedded in graphene oxide to enhance the chemical stability of a proton exchange membrane fuel cell (PEMFC) has been carried out. Synthesis of composite membranes (Nafion-GO/Ce-x) with Nafion solution as a polymer is synthesized by a solution casting method where (x = concentration of composite). The developed hybrid material was characterized by FT-IR and X-ray diffraction (XRD) for its phase identification while the chemical struct
A self-assembled quasi-solid electrolyte with zwitterion and PEG co-grafting enables fast single Li-ion transport through large conducting domains. Its flexible, stable structure ensures high performance and safety in lithium batteries.
