锂(药物)
阳极
材料科学
金属锂
电极
分离器(采油)
集电器
电池(电)
自行车
电解质
纳米技术
计算机科学
枝晶(数学)
化学
生物
几何学
数学
考古
功率(物理)
物理化学
内分泌学
物理
热力学
历史
量子力学
作者
Peichao Zou,Yang Wang,Sum-Wai Chiang,Xuanyu Wang,Feiyu Kang,Cheng Yang
标识
DOI:10.1038/s41467-018-02888-8
摘要
Uncontrolled growth of lithium dendrites during cycling has remained a challenging issue for lithium metal batteries. Thus far, various approaches have been proposed to delay or suppress dendrite growth, yet little attention has been paid to the solutions that can make batteries keep working when lithium dendrites are already extensively present. Here we develop an industry-adoptable technology to laterally direct the growth of lithium dendrites, where all dendrites are retained inside the compartmented copper current collector in a given limited cycling capacity. This featured electrode layout renders superior cycling stability (e.g., smoothly running for over 150 cycles at 0.5 mA cm-2). Numerical simulations indicate that reduced dendritic stress and damage to the separator are achieved when the battery is abusively running over the ceiling capacity to generate protrusions. This study may contribute to a deeper comprehension of metal dendrites and provide a significant step towards ultimate safe batteries.
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