Yonsei University · Engineering
이 교수의 연구실은 나노소재 기반의 고감도 기술 센서와 에너지 저장 장치 개발에 초점을 맞추고 있습니다. 특히 팔라듐 기반 수소 가스 센서, 나노갭 구조를 활용한 민감도 향상 기술, 그리고 리튬이온 배터리용 고성능 복합 나노소재의 설계와 응용을 중심으로 연구를 진행하고 있습니다. 유연하고 내구성 있는 소프트 로봇용 통합 센서 시스템 개발도 미래 연구 방향으로 추진 중입니다.
Figures are computed from collected data and may differ slightly.
Palladium (Pd) has received attention as an ideal hydrogen sensor material due to its properties such as high sensitivity and selectivity to hydrogen gas, fast response, and operability at room temperature. Interestingly, various Pd nanostructures that have been realized by recent developments in nanotechnologies are known to show better performance than bulk Pd. This review highlights the characteristic properties, issues, and their possible solutions of hydrogen sensors based on the low-dimens
With the recent reillumination of the hydrogen economy around the world, the demand for H<sub>2</sub> sensors is expected to increase rapidly. Due to safety issues caused by the highly flammable and explosive character of hydrogen gas (H<sub>2</sub> ), it is imperative to develop the sensors that can quickly and sensitively detect H<sub>2</sub> leaks. For the development of H<sub>2</sub> sensors, Pd-based materials have been extensively used due to the high affinity of Pd metal for H<sub>2</sub>
Herein, we describe a microwave-assisted hydrothermal process to synthesize α-Fe2O3 nanotubes/SnO2 nanorods/reduced graphene oxide (FNT/S/RGO) for application as a high-performance anode in lithium-ion batteries (LIBs). The composite products exhibit anisotropic growth because of heteronucleation and the preferred orientation of SnO2. SnO2 nanorods on the FNT surfaces are converted into Sn metal during the alloying/dealloying reaction, which offers improved electrical conductivity. The FNT/S/RGO
Nanoscale gaps, which enable many research applications in fields such as chemical sensors, single-electron transistors, and molecular switching devices, have been extensively investigated over the past decade and have witnessed the evolution of related technologies. Importantly, nanoscale gaps employed in hydrogen-gas (H(2)) sensors have been used to reversibly detect H(2) in an On-Off manner, and function as platforms for enhancing sensing performance. Herein, we review recent advances in nano
We fabricated Pd-coated rough Si nanowires, using a combination of Si electroless etching and Pd sputtering. The semi-densely distributed, vertical-standing rough Si nanowires, which were clustered locally with inter-cluster distances of several nm to several μm, were selected as a basal platform. Pd was coated only on the upper part of the Si nanowires in the semi-dense configuration, and their surface profile replicated the surface morphology of Si nanowires. The Pd-coated rough Si nanowires s
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