Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Dongkyoung Lee"'
Publikováno v:
Journal of Science: Advanced Materials and Devices, Vol 9, Iss 3, Pp 100753- (2024)
Exploration of increased electrode surface area through laser structuring is undertaken to improve performance. While nanosecond lasers offer cost-effective processing, femtosecond lasers achieve a minimal heat effect, excelling in precision. Prior r
Externí odkaz:
https://doaj.org/article/c3679cdde2ed42ba8e30c51d2c50b751
Autor:
Dawit Musse, Dongkyoung Lee
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-19 (2023)
Abstract A laser processing technique is proposed for the processing of a 2.5 mm thick carbon nanotube (CNT) composite bipolar plate for proton exchange membrane fuel cells (PEMFCs). This study aims to understand laser interaction with the CNT compos
Externí odkaz:
https://doaj.org/article/95e27cb068cb4150b4cf5ea6e7bb2394
Publikováno v:
Materials & Design, Vol 231, Iss , Pp 112020- (2023)
Lithium-ion batteries are widely used for their high energy density, high power density, long lifetime, and safety which are crucial for the environmentally friendly future energy system. Electrodes are the key component of LIBs that determines batte
Externí odkaz:
https://doaj.org/article/a15c391dec484f8899a7958997b72ec0
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-15 (2022)
Abstract In this study, the influence of a pulsed fiber laser of 250 W power with a spot size of 40 µm was successfully analyzed during scabbling of six types of cement mortar and three types of ultra-high-performance concrete (UHPC). Confocal micro
Externí odkaz:
https://doaj.org/article/0b8df9134e444afaada6662b8c4473a7
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract Laser cutting of intrusive rocks, including granite, gabbro, and diorite, is carried out in order to assess the cut characteristics through geometrical measurements, such as kerf width, melting width, and penetration depth. The absorption ra
Externí odkaz:
https://doaj.org/article/20c4f98902fb413cb92fec760b971a20
Publikováno v:
Journal of Materials Research and Technology, Vol 16, Iss , Pp 322-334 (2022)
Lithium-ion batteries (LIBs) are vital in the transportation sector due to their promising technology meeting the future hybrid and electric vehicles requirements. The limited capacities of anode and cathode materials are the obstacle in the current
Externí odkaz:
https://doaj.org/article/9ea8651768b54c5eaa14f66179ad98da
Autor:
Dongkyoung Lee, Dahoon Ahn
Publikováno v:
Data in Brief, Vol 20, Iss , Pp 146-151 (2018)
The piezoelectric actuators, providing mechanical energy, are a good option to remove the ice efficiently. Therefore, a testbed for experiments are designed and the preliminary data of de-icing phenomena is provided. An ice specimen, formed from ster
Externí odkaz:
https://doaj.org/article/31754d4787fb44c89eea0fa90553262f
Autor:
Dongkyoung Lee, Jyotirmoy Mazumder
Publikováno v:
Data in Brief, Vol 17, Iss , Pp 6-14 (2018)
Material properties of copper and aluminum required for the numerical simulation are presented. Electrodes used for the (paper) are depicted. This study describes the procedures of how penetration depth, width, and absorptivity are obtained from the
Externí odkaz:
https://doaj.org/article/91283e301ad14b7f9908e11d9e38b79b
Publikováno v:
Metals, Vol 11, Iss 12, p 1914 (2021)
Cement mortar composite has a wide range of applications on construction sites, including masonry, plastering and concrete repair. In construction sites, scabbling process is a method to remove from a few millimeters to several centimeters of defect
Externí odkaz:
https://doaj.org/article/c346d1fc195048e385990356330b2c60
Publikováno v:
Micromachines, Vol 12, Iss 5, p 582 (2021)
The wettability of electrodes increases the power and energy densities of the cells of lithium-ion batteries, which is vital to improving their electrochemical performance. Numerous studies in the past have attempted to explain the effect of electrol
Externí odkaz:
https://doaj.org/article/3b42be4895dc45f1a866cccbe01eac6d