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首页> 外文期刊>RSC Advances >Free-standing lithiophilic Ag-nanoparticle-decorated 3D porous carbon nanotube films for enhanced lithium storage
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Free-standing lithiophilic Ag-nanoparticle-decorated 3D porous carbon nanotube films for enhanced lithium storage

机译：用于增强锂储存的独立式锂碘术Ag纳米粒子 - 装饰3D多孔碳纳米管膜

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摘要

Lithium metal batteries are promising candidates for next generation high energy batteries. However, an undesirable dendrite growth hinders their practical applications. Herein, a three-dimensional (3D) porous carbon nanotube film decorated with Ag nanoparticles (CNT/Ag) has been synthesizedviathe thermal decomposition reaction of AgNO(3)into Ag nanoparticles, and then is transformed into a 3D porous CNT/Ag/Li filmviathermal infusion to obtain a high-performance free-standing lithium host. This as-formed 3D CNT/Ag/Li host can effectively restrain the dendrite growth by guiding Li depositionviathe highly lithiophilic Ag nanoparticle seeds and lowering local current density of the highly conductive matrix. The as-prepared CNT/Ag/Li electrode exhibits long-term cycling stability over 200 cycles at a current density of 1 mA cm(-2)with an areal capacity of 1.0 mA h cm(-2). Moreover, the full cell paired with a sulfur/C cathode shows good cycling stability. Therefore, the 3D porous CNT/Ag/Li film formedviaa facile three-step fabrication process can enlarge the cycle lifetime of a lithium metal anode.
机译：锂金属电池是下一代高能源电池的承诺候选人。然而，不希望的树突生长阻碍​​了它们的实际应用。这里，用Ag纳米颗粒（CNT / AG）装饰的三维（3D）多孔碳纳米管膜已经合成了AgNO（3）中的热分解反应到Ag纳米粒子中，然后转化为3D多孔CNT / Ag / Li Filmvia热输液，获得高性能的独立锂宿主。这种AS形成的3D CNT / AG / Li宿主可以通过引导Li沉积血清纳米粒子种子和降低高导电基质的局部电流密度来有效地抑制树突生长。制备的CNT / Ag / Li电极在最小密度为1mA cm（-2）的电流密度为200mAc（-2）的电流容量上具有超过200次循环的长期循环稳定性。此外，与硫/ C阴极配对的全细胞显示出良好的循环稳定性。因此，3D多孔CNT / Ag / Li膜形成viaa容易的三步制造方法可以扩大锂金属阳极的循环寿命。

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  • 来源
    《RSC Advances》 |2020年第51期|共7页
  • 作者

    Wu Fang; Quan Heng; Han Jiang; Peng Xiaoli; Yan Zongkai; Zhang Xiaokun; Xiang Yong;

  • 作者单位

    Univ Elect Sci &

    Technol China Sch Mat &

    Energy Chengdu 611731 Peoples R China;

    Univ Elect Sci &

    Technol China Sch Mat &

    Energy Chengdu 611731 Peoples R China;

    Univ Elect Sci &

    Technol China Sch Mat &

    Energy Chengdu 611731 Peoples R China;

    Univ Elect Sci &

    Technol China Sch Mat &

    Energy Chengdu 611731 Peoples R China;

    Univ Elect Sci &

    Technol China Sch Mat &

    Energy Chengdu 611731 Peoples R China;

    Univ Elect Sci &

    Technol China Sch Mat &

    Energy Chengdu 611731 Peoples R China;

    Univ Elect Sci &

    Technol China Sch Mat &

    Energy Chengdu 611731 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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