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Self-Regulation Seaweed-Like Lithium Metal Anode Enables Stable Cycle Life of Lithium Battery

机译：自调节海藻状锂金属阳极可实现锂电池的稳定循环寿命

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摘要

Lithium (Li) metal anodes exhibit intriguing advantages for application in high-energy-density batteries. However, the short cycle life and security issues of these anodes induced by the dendrite growth and huge volumetric change of Li severely limit their practical application. Herein, a heuristic method to fabricate a self-supported seaweed-like Li metal anode directly to improve the cycle life of Li metal batteries, is reported. The unique seaweed-like morphology of the Li anode facilitates the dispersion of the local current density, impeding the uneven growth of Li dendrites, and remits the volume expansion of the anode, leading to excellent cycle performance. The as-prepared Li metal anode exhibits excellent plating-stripping stability over 600 cycles at high current density of 2 mA cm(-2) and delivers excellent stability even with the Li4Ti5O12 cathode in the full cell. This study provides a facile strategy to prepare stable and dendrite-free Li anodes by controlling the morphology of Li metal. Thus, this study can further inspire new research ideas for preparing stable Li metal anodes.
机译：锂（Li）金属阳极表现出用于高能密度电池的兴趣优点。然而，由枝晶生长和李大的巨大体积变化引起的这些阳极的短循环寿命和安全问题严重限制了它们的实际应用。这里，报道了一种引发的方法，用于直接制造自支撑的海藻状Li金属阳极以改善Li金属电池的循环寿命。 Li阳极的独特海藻形态有助于局部电流密度的分散，阻碍Li Dendrites的不均匀生长，并延长了阳极的体积膨胀，导致优异的循环性能。如制备的Li金属阳极在高电流密度为2 mA cm（-2）的高电流密度上具有优异的电镀剥离稳定性，并且即使在全细胞中也具有Li4Ti5O12阴极的优异稳定性。本研究提供了一种通过控制Li金属的形态来制备稳定和树枝状Li阳极的容易策略。因此，本研究进一步激发了用于制备稳定Li金属阳极的新研究思路。

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  • 来源
    《Advanced Functional Materials》 |2021年第16期|2009917.1-2009917.11|共11页
  • 作者

    Wang Kun; Li Xiaodong; Gao Juan; Sun Quanhu; Yang Ze; He Jianjiang; Cui Shuang; Huang Changshui;

  • 作者单位

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol Qingdao 266101 Peoples R China;

    SINOPEC Beijing Res Inst Chem Ind Beijing 100013 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol Qingdao 266101 Peoples R China|Univ Chinese Acad Sci SINOPEC Beijing Res Inst Chem Ind Ctr Mat Sci & Optoelect Engn Div Anal Beijing 100049 Peoples R China;

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

    acetylene; lithium anodes; seaweed#8208; like Li metal; self#8208; regulation; thiophene;

    机译：乙炔;锂阳极;海藻＆＃8208;像李金属;自我＆＃8208;调节;噻吩;

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