Publications by authors named "Hyung Sang Park"
Article Synopsis
- - Two-dimensional (2D) materials and their heterostructures are seen as key players for future electronics, but face challenges in growth precision, domain consistency, and scalability for commercial use.
- - A new confined-growth technique addresses these issues by allowing for controlled layer-by-layer growth of single-domain 2D monolayer arrays on various substrates using patterned SiO masks.
- - This method enables the creation of high-quality wafer-scale arrays of materials like WSe and heterostructures like MoS/WSe, paving the way for 2D materials to be integrated into industrial applications.
LTO (Li₄Ti₅O) has been highlighted as anode material for next-generation lithium ion secondary batteries due to advantages such as a high rate capability, excellent cyclic performance, and safety. However, the generation of gases from undesired reactions between the electrode surface and the electrolyte has restricted the application of LTO as a negative electrode in Li-ion batteries in electric vehicles (EVs) and energy storage systems (ESS). As the generation of gases from LTO tends to be accelerated at high temperatures (40⁻60 °C), the thermal stability of LTO should be maintained during battery discharge, especially in EVs.
View Article and Find Full Text PDFA sense of stability: The stability of carbon-supported platinum catalysts at high potentials is important for the commercialization of fuel cells for homes and cars. The electrochemical active surface (EAS) area of a Pt-C aerogel catalyst was found to increase up to 500 cycles, in contrast to that for the so-called Tanaka catalyst which decreases with the number of repeated potential cycles.
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