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Exploring the Surface Segregation of Rh Dopant in PtNi Nanoparticles through Atom Probe Tomography Analysis

Autor: Kim, Se-Ho, Jun, Hosun, Jang, Kyuseon, Choi, Pyuck-Pa, Gault, Baptiste, Jung, Chanwon

Proton exchange membrane fuel cells hold promise as energy conversion devices for hydrogen-based power generation and storage. However, the slow kinetics of the oxygen reduction at the cathode imposes the need for highly active catalysts, typically P

Externí odkaz: http://arxiv.org/abs/2303.10548

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Tracking the Mn diffusion in the carbon-supported nanoparticles through the collaborative analysis of atom probe and evaporation simulation

Autor: Jung, Chanwon, Jun, Hosun, Jang, Kyuseon, Kim, Se-Ho, Choi, Pyuck-Pa

Carbon-supported nanoparticles have been used widely as efficient catalysts due to their enhanced surface-to-volume ratio. To investigate their structure-property relationships, acquiring 3D elemental distribution is highly required. Here, the carbon

Externí odkaz: http://arxiv.org/abs/2202.08501

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Three-dimensional Atomic Mapping of Ligands on Nanoparticles

Autor: Jang, Kyuseon, Kim, Se-Ho, Jun, Hosun, Jung, Chanwon, Yu, Jiwon, Lee, Sangheon, Choi, Pyuck-Pa

Capping ligands are crucial to synthesize colloidal nanoparticles with novel functional properties. However, the interaction between capping ligands and their interaction with the crystallographic surfaces of nanoparticles during colloidal synthesis

Externí odkaz: http://arxiv.org/abs/2105.08437

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