Yolk–Shell Sn@C Eggette-like Nanostructure: Application in Lithium-Ion and Sodium-Ion Batteries

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• 作者：Site Li ; Ziming Wang ; Jun Liu ; LinYu Yang ; Yue Guo ; Lizi Cheng ; Ming Lei ; Wenjun Wang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：August 3, 2016
• 年：2016
• 卷：8
• 期：30
• 页码：19438-19445
• 全文大小：608K
• 年卷期：0
• ISSN：1944-8252

文摘

Yolk–shell carbon encapsulated tin (Sn@C) eggette-like compounds (SCE) have been synthesized by a facile method. The SCE structures consist of tin cores covered by carbon membrane networks with extra voids between the carbon shell and tin cores. The novel nanoarchitectures exhibit high electrochemical performance in both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). As anodes for LIBs, the SCE electrodes exhibit a specific capacity of ∼850 mA h g^–1 at 0.1 C (100 mA g^–1) and high rate capability (∼450 mA h g^–1 remains) at high current densities up to 5 C (5000 mA g^–1). For SIBs, the SCE electrodes show a specific capacity of ∼400 mA h g^–1 at 0.1 C and high rate capacity (∼150 mA h g^–1 remains) at high current densities up to 5 C (5000 mA g^–1).