高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (8): 1715.doi: 10.7503/cjcu20140351

• 物理化学 • 上一篇    下一篇

由含铝金属有机骨架材料制备的多孔碳在锂硫电池中的应用

孟宪斌, 高秋明   

  1. 北京航空航天大学化学与环境学院, 北京 100191
  • 收稿日期:2014-04-14 出版日期:2014-08-10 发布日期:2019-08-01
  • 作者简介:联系人简介: 高秋明, 男, 博士, 教授, 博士生导师, 主要从事能源与环境材料化学研究. E-mail: qmgao@buaa.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: U0734002)、 国家“九七三”计划项目(批准号: 2011CB935700, 2014CB931800)和中国航空基金(批准号: 2013ZF51069)资助

Porous Carbon from Carbonized Metal-organic Frameworks for Lithium Sulphur Batteries

MENG Xianbin, GAO Qiuming*   

  1. School of Chemistry and Environment, Beihang University, Beijing 100191, China
  • Received:2014-04-14 Online:2014-08-10 Published:2019-08-01
  • Contact: GAO Qiuming
  • Supported by:
    Supported by the National Natural Science Foundation of China(No U0734002), the National Basic Research Programs of China(Nos.2011CB935700, 2014CB931800) and the Chinese Aeronautic Project(No.2013ZF51069)

摘要:

采用水热法制备了一种含铝金属有机骨架材料, 其在高温下发生炭化得到多孔碳, 最后与硫复合制得锂硫电池正极材料. XRD图谱显示在高温炭化时多孔碳样品出现了部分石墨化. N2等温吸附-脱附测试分析显示合成的多孔碳材料含有微孔和介孔结构. 对不同载硫量的锂硫电池进行了充放电性能测试, 结果显示S质量分数为46.3%的样品在0.01 C倍率下首次放电容量达到1272 mA·h/g; 在0.1 C倍率下首次放电容量为934 mA·h/g, 循环性能良好.

关键词: 金属有机骨架, 多孔碳, 正极材料, 锂硫电池

Abstract:

An aluminum metal-organic framework(MOF) was prepared by hydrothermal method. Porous carbon was produced by direct carbonization of MOFs and then was loaded with sulfur. XRD patterns show that the porous carbon is partially graphitized during the high temperature carbonization. N2 sorption isotherms illustrate that the porous carbon contain both microporous and mesoporous structures. Charge-discharge tests were carried out among hierarchically sulfur loading lithium sulfur batteries. The initial discharge capacity of S/C-46.3 sample is 1272 mA·h/g at 0.01 C and 934 mA·h/g at 0.1 C with good cycle performance.

Key words: Metal-organic framework, Porous carbon, Cathode material, Lithium sulphur battery(Ed.: F, K, M)

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