• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Bottom-Up Confined Synthesis of Nanorod-in-Nanotube Structured Sb@N-C for Durable Lithium and Sodium Storage
【24h】

Bottom-Up Confined Synthesis of Nanorod-in-Nanotube Structured Sb@N-C for Durable Lithium and Sodium Storage

机译：自下而上的纳米棒结构的Sb @ N-C纳米管的持久限制锂和钠存储

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Antimony (Sb) has emerged as an attractive anode material for both lithium and sodium ion batteries due to its high theoretical capacity of 660 mA h g(-1). In this work, a novel peapod-like N-doped carbon hollow nanotube encapsulated Sb nanorod composite, the so-called nanorod-in-nanotube structured Sb@N-C, via a bottom-up confinement approach is designed and fabricated. The N-doped-carbon coating and thermal-reduction process is monitored by in situ high-temperature X-ray diffraction characterization. Due to its advanced structural merits, such as sufficient N-doping, 1D conductive carbon coating, and substantial inner void space, the Sb@N-C demonstrates superior lithium/sodium storage performance. For lithium storage, the Sb@N-C exhibits a high reversible capacity (650.8 mA h g(-1) at 0.2 A g(-1)), excellent long-term cycling stability (a capacity decay of only 0.022% per cycle for 3000 cycles at 2 A g(-1)), and ultrahigh rate capability (343.3 mA h g(-1) at 20 A g(-1)). For sodium storage, the Sb@N-C nanocomposite displays the best long-term cycle performance among the reported Sb-based anode materials (a capacity of 345.6 mA h g(-1) after 3000 cycles at 2 A g(-1)) and an impressive rate capability of up to 10 A g(-1). The results demonstrate that the Sb@N-C nanocomposite is a promising anode material for high-performance lithium/sodium storage.
机译：锑（Sb）由于其660 mA h g（-1）的高理论容量而成为锂和钠离子电池的有吸引力的负极材料。在这项工作中，通过自下而上的限制方法，设计并制造了一种新颖的豆荚状N掺杂碳空心纳米管封装的Sb纳米棒复合物，即所谓的纳米棒-纳米管结构Sb @ N-C。通过原位高温X射线衍射表征监测N掺杂碳涂层和热还原过程。由于其先进的结构优势，例如足够的N掺杂，1D导电碳涂层和足够的内部空隙空间，Sb @ N-C表现出优异的锂/钠存储性能。对于锂存储，Sb @ NC具有高可逆容量（在0.2 A g（-1）时为650.8 mA hg（-1）），出色的长期循环稳定性（3000个循环中每个循环的容量衰减仅为0.022％）在2 A g（-1）时）和超高倍率能力（在20 A g（-1）时为343.3 mA hg（-1））。对于钠存储，Sb @ NC纳米复合材料在报告的基于Sb的阳极材料中表现出最佳的长期循环性能（在2 A g（-1）下经过3000次循环后容量为345.6 mA hg（-1））。高达10 A g（-1）的惊人速率能力。结果表明，Sb @ N-C纳米复合材料是用于高性能锂/钠存储的有前途的阳极材料。

著录项

  • 来源
    《Advanced energy materials》 |2018年第19期|1703237.1-1703237.9|共9页
  • 作者

    Luo Wen; Li Feng; Gaumet Jean-Jacques; Magri Pierre; Diliberto Sebastien; Zhou Liang; Mai Liqiang;

  • 作者单位

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Int Sch Mat Sci & Engn, Luoshi Rd 122, Wuhan 430070, Hubei, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Int Sch Mat Sci & Engn, Luoshi Rd 122, Wuhan 430070, Hubei, Peoples R China;

    Univ Lorraine, LCP A2MC, Inst Jean Barriol, F-57070 Metz, France;

    Univ Lorraine, LCP A2MC, Inst Jean Barriol, F-57070 Metz, France;

    Univ Lorraine, Inst Jean Lamour, UMR CNRS 7198, Campus Artem,2 Allee Andre Guinier, F-54000 Nancy, France;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Int Sch Mat Sci & Engn, Luoshi Rd 122, Wuhan 430070, Hubei, Peoples R China;

    Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Int Sch Mat Sci & Engn, Luoshi Rd 122, Wuhan 430070, Hubei, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    in situ high-temperature XRD; lithium-ion batteries; N-doped carbon hollow nanotubes; Sb anodes; sodium-ion batteries;

    机译：原位高温XRD;锂离子电池;N掺杂碳空心纳米管;Sb阳极;钠离子电池;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号