From ZnSn(OH)(6) to SnS2: Topotactic transformation synthesis of SnS2 hierarchical microcubes with superior Li-ion storage performance

标题

From ZnSn(OH)(6) to SnS2: Topotactic transformation synthesis of SnS2 hierarchical microcubes with superior Li-ion storage performance

作者

作者:Ji, SM (Ji, Shaomin)^[1 ]; Yu, LT (Yu, Litao)^[4 ]; Xu, XJ (Xu, Xijun)^[2,3 ]; Zhang, LG (Zhang, Liguo)^[4 ]; Liu, J (Liu, Jun)^[2,3 ]

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摘要

会议:4th International Symposium on Rare Earth Resource Utilization / 7th International Symposium on Functional Materials

关键词

The 3D hierarchical microstructured electrodes by assembling the individual 1D/2D nanosubunits can fully take advantage of the merit of 1D/2D nanostructured materials, as well as alleviate their drawbacks. In this work, SnS2 3D hierarchical microcubes consisting of 2D nanosheet subunits were facilely synthesized via a simple topotactic transformation with room-temperature coprecipitated ZnSn(OH)(6) microcubes as the template. Compared to bulk counterparts, this microstructured SnS2 was found to have a unique morphology and electrochemical interfacial regions that facilitated highly efficient Li-ion insertion/extraction and effectively accommodate the large volume changes during charge/discharge cycles. Over the whole 200 cycles at 1C current density, an outstanding cycleing stability is exhibited, with a high stable specific capacity of about 640 mA h g(-1). (C) 2016 Elsevier Ltd. All rights reserved.

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