• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Rapid preparation of SnO2/C nanospheres by using organotin as building blocks and their application in lithium-ion batteries
【24h】

Rapid preparation of SnO2/C nanospheres by using organotin as building blocks and their application in lithium-ion batteries

机译：通过使用有机锡作为构建块的快速制备SnO2 / C纳米球及其在锂离子电池中的应用

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

Constructing an electrode integrating ultralow SnO2 size, stable carbon barriers and well-developed pore structure are effective to address the issues of crack and pulverization for SnO2-based electrode during lithiation/delithiation process. But until now, it is still a challenge to exploit simple and robust method to fabricate ultrasmall SnO2 particles embedded in a carbon matrix. Herein, we develop a rapid strategy to prepare SnO2/C nanospheres using a simple Friedel-Crafts crosslinking of triphenyltin chloride for only 15 min and subsequent carbonization. The SnO2/C nanospheres (similar to 500 nm) have ultrasmall SnO2 particles of 4 nm, which were dispersed in carbon continuous phase. Moreover, the pyrolysis of the polymer during carbonization creates considerable micropores inside the carbon phase and leads to a surface area of 463.3 m(2) g(-1). When used as electrode materials in a lithium-ion battery, the ultrasmall SnO2 particles can prevent the cracking of the electrode, the carbon continuous phase can act as a buffer to protect SnO2 particles from aggregation, and micropores will supply expansive space for volume change. Thus, the SnO2/C nanosphere exhibits superior electrochemical performance, e.g., the first discharge and charge capacities can reach 1453 and 719 mA h g(-1) respectively, and 120 cycles later, its capacity remains 629 mA h g(-1), indicating a capacity retention of 87.4% (C-120th/C-2nd).
机译：构建集成超级SnO2尺寸的电极，稳定的碳屏障和发育良好的孔结构是有效地解决锂化/脱水过程中SnO2基电极的裂缝和粉碎问题。但到目前为止，利用简单稳健的方法制造嵌入在碳基质中的超大SnO2颗粒仍然是一项挑战。在此，我们制定快速策略，用于使用简单的Friedel-Crafts交联仅制备SnO2 / C纳米球，仅15分钟并随后的碳化。 SnO2 / C纳米球（类似于500nm）具有4nm的超超级SnO 2颗粒，其分散在碳连续相中。此外，在碳化期间聚合物的热解产生碳相的相当大的微孔，并导致表面积为463.3m（2 )g（-1）。当用作锂离子电池中的电极材料时，超大SnO2颗粒可以防止电极的裂缝，碳连续相可以用作缓冲液以保护来自聚集的SnO2颗粒，并且微孔将供应膨胀空间以供应膨胀空间以供膨胀空间。因此，SnO2 / C纳米播放表现出优异的电化学性能，例如，第一个放电和充电容量可以分别达到1453和719 mA Hg（-1），并以120次循环，其容量仍然是629 ma Hg（-1），表明能力保留为87.4％（C-120th / C-2ND）。

著录项

  • 来源
    《RSC Advances》 |2017年第55期|共6页
  • 作者

    Li Liuqing; Zhang Haiyan; Li Zhaopeng; Zhong Weihao; Liao Haiyang; Li Zhenghui;

  • 作者单位

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

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

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