Y
Yong Hyup Kim
Researcher at Seoul National University
Publications - 200
Citations - 5712
Yong Hyup Kim is an academic researcher from Seoul National University. The author has contributed to research in topics: Carbon nanotube & Field electron emission. The author has an hindex of 35, co-authored 200 publications receiving 4936 citations. Previous affiliations of Yong Hyup Kim include Instituto Nacional de Técnica Aeroespacial & Langley Research Center.
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Journal ArticleDOI
Superior rechargeability and efficiency of lithium-oxygen batteries: hierarchical air electrode architecture combined with a soluble catalyst.
Hee-Dae Lim,Hyelynn Song,Jinsoo Kim,Hyeokjo Gwon,Youngjoon Bae,Kyu-Young Park,Jihyun Hong,Haegyeom Kim,Taewoo Kim,Yong Hyup Kim,Xavier Lepró,Raquel Ovalle-Robles,Ray H. Baughman,Kisuk Kang +13 more
TL;DR: A novel Li-O2 battery with high reversibility and good energy efficiency using a soluble catalyst combined with a hierarchical nanoporous air electrode is reported, enabling ultra-efficient electrode reactions and significantly enhanced catalytic activity.
Journal ArticleDOI
Highly sensitive NO2 gas sensor based on ozone treated graphene
Min Gyun Chung,Dai Hong Kim,Hyun Myoung Lee,Taewoo Kim,Jong Ho Choi,Dong Kyun Seo,Ji-Beom Yoo,Seong-Hyeon Hong,Tae June Kang,Yong Hyup Kim +9 more
TL;DR: In this article, a simple and reproducible method to improve the sensing performance of a graphene gas sensor using ozone treatment and demonstrate it with nitrogen dioxide (NO2) gas was reported.
Journal ArticleDOI
Enhanced Power and Rechargeability of a Li−O2 Battery Based on a Hierarchical-Fibril CNT Electrode
Hee-Dae Lim,Kyu-Young Park,Hyelynn Song,Eui Yun Jang,Hyeokjo Gwon,Jinsoo Kim,Yong Hyup Kim,Márcio D. Lima,Raquel Ovalle Robles,Xavier Lepró,Ray H. Baughman,Kisuk Kang +11 more
TL;DR: The poor cyclability and low rate capability remain as critical drawbacks of the Li−O2 batteries, and the ideally designed electrode architecture is still awaited.
Journal ArticleDOI
Flexible hydrogen sensors using graphene with palladium nanoparticle decoration
Min Gyun Chung,Dai-Hong Kim,Dong Kyun Seo,Taewoo Kim,Hyeong Uk Im,Hyun Myoung Lee,Ji-Beom Yoo,Seong-Hyeon Hong,Tae June Kang,Yong Hyup Kim +9 more
TL;DR: In this article, a single layer graphene decorated with palladium (Pd) nanoparticles is fabricated using a single-layer H 2 sensor, which is able to detect as low as 20ppm H 2 at room temperature (22°C).
Journal ArticleDOI
High-efficiency electrochemical thermal energy harvester using carbon nanotube aerogel sheet electrodes
Hyeongwook Im,Tae Woo Kim,Hyelynn Song,Jong Ho Choi,Jaesung Park,Raquel Ovalle-Robles,Hee Doo Yang,Kenneth D. Kihm,Ray H. Baughman,Hyunjung Lee,Tae June Kang,Yong Hyup Kim +11 more
TL;DR: Carbon nanotube aerogel-based thermo-electrochemical cells are fabricated, which are potentially low-cost and relatively high-efficiency materials for this application and the importance of electrode purity, engineered porosity and catalytic surfaces in enhancing the thermocell performance is demonstrated.