高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (8): 1866.doi: 10.7503/cjcu20200012

• 物理化学 • 上一篇    下一篇

含羟基磷灰石纳米线复合夹层的高性能锂硫电池

李锐, 孙晓刚, 邹婧怡, 何强   

  1. 南昌大学机电工程学院, 南昌 330031
  • 收稿日期:2020-01-09 出版日期:2020-08-10 发布日期:2020-07-31
  • 通讯作者: 孙晓刚,男,博士,教授,主要从事碳纳米管和锂离子电池研究.E-mail:xiaogangsun@163.com E-mail:xiaogangsun@163.com
  • 基金资助:
    江西省高等学校科技落地计划项目(批准号:KJLD3006)资助.

High Performance Lithium-sulfur Battery with Hydroxyapatite Nanowire Composite Interlayer

LI Rui, SUN Xiaogang, ZOU Jingyi, HE Qiang   

  1. School of Mechantronics Engineering, Nanchang University, Nanchang 330031, China
  • Received:2020-01-09 Online:2020-08-10 Published:2020-07-31
  • Supported by:
    Supported by the Fund of Science & Technology Transformation Program for Universities in Jiangxi Province, China(No.KJLD13006).

摘要: 通过水热合成法制备羟基磷灰石[Ca5(PO43(OH)]纳米线(HN),并与多壁碳纳米管(MWCNTs)导电纸形成层次交联的新型羟基磷灰石纳米线复合(HN/CNT)夹层.利用扫描电子显微电镜、傅里叶变换红外光谱(FTIR)和紫外-可见光谱(UV-Vis)等对材料的形貌与结构进行表征.电化学测试结果表明,含HN/CNT夹层的锂硫电池在1C倍率下循环200次后放电比容量仍保持在871 mA · h/g,每次循环衰减率仅为0.031%.

关键词: 锂硫电池, 穿梭效应, 羟基磷灰石, 碳纳米管, 夹层

Abstract: Hydroxyapatite[Ca5(PO4)3(OH)] nanowires were prepared by hydrothermal synthesis, and were combined as a polysulfide absorbent with multi-walled carbon nanotubes(MWCNTs) interlayer to form a hierarchically cross-linked hydroxyphosphate nanowire composite(HN/CNT) interlayer. This layer was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy(FTIR)and ultraviolet-visible spectroscopy(UV-Vis). The results of electrochemical tests show that the Li-S battery with HN/CNT interlayer has a specific discharge capacity of 871 mA·h/g after 200 cycles at 1C, and the fading rate is only 0.031% per cycle.

Key words: Li-S battery, Shuttle effect, Hydroxyapatite, Carbon nanotube, Interlayer

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