Cheong Jun Young, Chang Joon Ha, Kim Sung Joo, Kim Chanhoon, Seo Hyeon Kook, Shin Jae Won, Yuk Jong Min, Lee Jeong Yong, Kim Il-Doo
1Department of Materials Science and Engineering,Korea Advanced Institute of Science and Technology,335 Science Road,Daejeon,305-701,Republic of Korea.
2Center for Nanomaterials and Chemical Reactions,Institute for Basic Science (IBS),Daejeon,305-701,Republic of Korea.
Microsc Microanal. 2017 Dec;23(6):1107-1115. doi: 10.1017/S1431927617012739. Epub 2017 Dec 8.
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.
我们追踪了在高能电子束辐照引发的锂化过程中，由二氧化锡纳米管（NTs）产生的锡纳米颗粒（NPs）。通过石墨烯液体池透射电子显微镜在液体电解质中观察锡纳米颗粒的生长动力学。观察结果表明，锡纳米颗粒通过聚结在二氧化锡纳米管表面生长，团聚纳米颗粒的最终形状由锡纳米颗粒的表面能以及锡纳米颗粒与二氧化锡纳米管之间的界面能决定。我们的结果可能有助于更合理地设计用于便捷离子插入的理想界面的材料。
