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Engineering Science and Materials Commons

Open Access. Powered by Scholars. Published by Universities.®

2015

Selected Works

Hamed Attariani

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Full-Text Articles in Engineering Science and Materials

Coupled Mechanochemical Theories For Reacting Systems With Application To Nanovoid Nucleation And Li-Ion Batteries, Hamed Attariani Feb 2015

Coupled Mechanochemical Theories For Reacting Systems With Application To Nanovoid Nucleation And Li-Ion Batteries, Hamed Attariani

Hamed Attariani

Hollow nanoparticles (NPs) are produced by void nucleation and growth during chemical reactions. However, there is no proper understanding of nucleation and growth mechanisms, and their predictive modeling. Furthermore, models based on the Kirkendall effect predict the process time, which is larger by orders of magnitude than in the experiment. A continuum-mechanics approach for nucleation and growth of a nanovoid in reacting NPs based on the Kirkendall effect is developed, which quantitatively describes the experimental results for oxidation of copper NPs. The results show that the core is under compression (which eliminates fracture hypothesis) which promotes void nucleation by decreasing ...