SnO₂ Nanoparticles Anchored on 2D V₂O₅ Nanosheets with Enhanced Lithium-Storage Performances

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• 作者：Gongzheng Yang ; Huawei Song ; Mingmei Wu ; Chengxin Wang ; ^{wchengx@mail.sysu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Electrochimica Acta
• 出版年：2016
• 出版时间：1 July 2016
• 年：2016
• 卷：205
• 期：Complete
• 页码：153-160
• 全文大小：3104 K

文摘

Developing two dimensional (2D) graphene-based nanomaterials with surface-to-surface architectures has been an important strategy for achieving high-performance lithium ion electrodes. However, almost all of them involve multistep procedures and expensive precursors. This paper reports a novel 2D nanocomposites composed of ultrafine SnO₂ nanoparticles anchored on V₂O₅ nanosheets via a one-pot hydrothermal method, which exhibit high reversible capacities and rate stabilities. The enhanced electrochemical performances compared to pure SnO₂ nanoparticles have been attributed to the effective prevention of self-agglomerations of the pulverized nanograins upon cycling. We speculate that the 2D V₂O₅ nanosheets with layered structures maybe a good substitute for the graphene nanosheets.