IBS Publications Repository: In Situ High-Resolution Transmission Electron Microscopy (TEM) Observation of Sn Nanoparticles on SnO2 Nanotubes under Lithiation

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In Situ High-Resolution Transmission Electron Microscopy (TEM) Observation of Sn Nanoparticles on SnO2 Nanotubes under Lithiation

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Title: In Situ High-Resolution Transmission Electron Microscopy (TEM) Observation of Sn Nanoparticles on SnO2 Nanotubes under Lithiation

Author(s): Jun Young Cheong; Joon Ha Chang; Sung Joo Kim; Chanhoon Kim; Hyeon Kook Seo; Jae Won Shin; Jong Min Yuk,; Jeong Yong Lee; Il-Doo Kim

Subject: agglomeration, ; graphene liquid cell, ; in situ TEM, ; lithium ion battery, ; SnO2

Abstract: We trace Sn nanoparticles (NPs) produced from SnO2 nanotubes (NTs) during lithiation initialized by high energy e-beam irradiation. The growth dynamics of Sn NPs is visualized in liquid electrolytes by graphene liquid cell transmission electron microscopy. The observation reveals that Sn NPs grow on the surface of SnO2 NTs via coalescence and the final shape of agglomerated NPs is governed by surface energy of the Sn NPs and the interfacial energy between Sn NPs and SnO2 NTs. Our result will likely benefit more rational material design of the ideal interface for facile ion insertion. © Microscopy Society of America 2017