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首页> 外文期刊>Advanced energy materials >Large-Area Preparation of Crack-Free Crystalline Microporous Conductive Membrane to Upgrade High Energy Lithium-Sulfur Batteries
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Large-Area Preparation of Crack-Free Crystalline Microporous Conductive Membrane to Upgrade High Energy Lithium-Sulfur Batteries

机译：大面积制备无裂纹晶体微孔导电膜以升级高能锂硫电池

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摘要

Lithium-sulfur (Li-S) batteries are appealing candidates for next-generation high-energy rechargeable batteries, but practical applications are still limited by poor cyclic life, which is caused by severe polysulfide shuttling in high-sulfur-loading batteries. Herein, a facile route is presented to fabricate high-performance Li-S batteries using a crystalline microporous membrane, which is prepared using a conductive metal-organic framework (MOF) material. With ordered microporous structure, large specific surface area, good sulphiphilicity, and excellent conductivity, the MOF membrane is grown in situ on the commercial separator and is an ideal light-weight barrier (0.066 mg cm(-2) ) for suppressing the polysulfide shuttling, which can significantly promote the capacities, rate capabilities, and cycling stabilities of Li-S batteries. Taking the advantage of this functional separator, the high-sulfur-loading Li-S battery (8.0 mg cm(-2) and 70 wt% of sulfur in cathode) delivers a high area capacity of 7.24 mAh cm(-2) after 200 cycles, thus providing a promising path toward advanced Li-S batteries.
机译：锂硫（Li-S）电池是下一代高能可充电电池的理想之选，但实际应用仍然受到循环寿命不足的限制，循环寿命是由于高硫负荷电池中多硫化物的严重穿梭引起的。本文中，提出了一种使用结晶微孔膜来制造高性能Li-S电池的简便方法，该膜是使用导电金属有机骨架（MOF）材料制备的。 MOF膜具有规则的微孔结构，大的比表面积，良好的亲硫性和出色的导电性，可在商用隔膜上原位生长，并且是抑制多硫化物穿梭的理想轻质阻隔层（0.066 mg cm（-2）） ，可以显着提高Li-S电池的容量，额定容量和循环稳定性。利用此功能性隔板的优势，高硫负载的Li-S电池（8.0 mg cm（-2）和阴极中70％的硫含量）在200次使用后可提供7.24 mAh cm（-2）的高面积容量循环，从而为开发先进的锂硫电池提供了一条有希望的途径。

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  • 来源
    《Advanced energy materials》 |2018年第31期|1802052.1-1802052.9|共9页
  • 作者

    Zang Ying; Pei Fei; Huang Jiahong; Fu Zhihua; Xu Gang; Fang Xiaoliang;

  • 作者单位

    Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China;

    Xiamen Univ, Pen Tung Sah Inst Micronano Sci & Technol, Xiamen 361005, Fujian, Peoples R China;

    Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China;

    Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China;

    Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China;

    Xiamen Univ, Pen Tung Sah Inst Micronano Sci & Technol, Xiamen 361005, Fujian, Peoples R China;

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

    conductive metal-organic frameworks; crystalline microporous membrane; functional separator; high sulfur loading; Li-S batteries;

    机译：导电金属有机骨架;晶体微孔膜;功能性隔板;高硫负荷;锂硫电池;

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