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Carbon nanotube-supported MoSe2 nanoflakes as an interlayer for lithium-sulfur batteries

SHAO Zhi-tao WU Li-li YANG Yue MA Xin-zhi LI Lu YE Hong-feng ZHANG Xi-tian

邵智韬, 武立立, 杨月, 马新志, 李璐, 叶红凤, 张喜田. 碳纳米管承载MoSe2纳米片作为锂硫电池的夹层材料. 新型炭材料, 2021, 36(1): 219-226. doi: 10.1016/S1872-5805(21)60015-X
引用本文: 邵智韬, 武立立, 杨月, 马新志, 李璐, 叶红凤, 张喜田. 碳纳米管承载MoSe2纳米片作为锂硫电池的夹层材料. 新型炭材料, 2021, 36(1): 219-226. doi: 10.1016/S1872-5805(21)60015-X
SHAO Zhi-tao, WU Li-li, YANG Yue, MA Xin-zhi, LI Lu, YE Hong-feng, ZHANG Xi-tian. Carbon nanotube-supported MoSe2 nanoflakes as an interlayer for lithium-sulfur batteries. New Carbon Mater., 2021, 36(1): 219-226. doi: 10.1016/S1872-5805(21)60015-X
Citation: SHAO Zhi-tao, WU Li-li, YANG Yue, MA Xin-zhi, LI Lu, YE Hong-feng, ZHANG Xi-tian. Carbon nanotube-supported MoSe2 nanoflakes as an interlayer for lithium-sulfur batteries. New Carbon Mater., 2021, 36(1): 219-226. doi: 10.1016/S1872-5805(21)60015-X

碳纳米管承载MoSe2纳米片作为锂硫电池的夹层材料

doi: 10.1016/S1872-5805(21)60015-X
详细信息
  • 中图分类号: TB34

Carbon nanotube-supported MoSe2 nanoflakes as an interlayer for lithium-sulfur batteries

Funds: This work was partially supported by National Natural Science Foundation of China (11504097, 51772069), and Fundamental Research Funds for the Provincial Universities of Heilongjiang
More Information
  • 摘要: 多硫化物的穿梭效应是锂硫(Li-S)电池最致命的固有问题。本文通过在商业聚丙烯隔膜上涂覆碳纳米管支撑的MoSe2纳米片,成功构建了对多硫化物具有强吸附作用的功能化夹层,有效抑制了多硫化物穿梭效应的发生。将该功能化隔膜用于锂硫电池,可获得良好的储能性质。在电流密度为0.1 C时,电池的初始比容量高达1485 mAh g−1。在高电流密度(2 C)下,电池的比容量仍能达到880 mAh g−1,说明电池的倍率性能较好。此外,电池在电流密度为0.5 C时表现出优异的长期循环稳定性。在循环300次的过程中,电池每圈容量的衰减率仅为0.093%。这些优异的储能特性得益于MoSe2对多硫化物的强吸附作用以及CNTs良好的导电性。
  • Scheme 1.  The preparation process of M/C-PP separator.

    Figure  1.  (a) XRD patterns and (b) SEM image of MoSe2/CNTs composites (Inset is the corresponding EDX).

    Figure  2.  (a, c) HRTEM images and (b) SAED patterns of MoSe2/CNTs.

    Figure  3.  (a) CV curves, (b) EIS plots, (c) GCD curves, and (d) cycling performance at 0.1 C, (e) Rate performance, (f) Cycling stability and coulombic efficiency of the Li-S batteries with PP, M-PP and M/C-PP at 0.5 C.

    Figure  4.  Digital photos of (a) Li foil, (b) Li foil with M/C-PP, (c) Li foil with PP. SEM images and elemental mappings of (d) MoSe2/CNT, (e) M/C-PP at 0.5 C after 100 cycles. (f) Digital photo of visualized adsorption tests of CNT, MoSe2 and MoSe2/CNTs with Li2S6. (g) Polarization curves of the symmetric cells with MoSe2/CNTs-carbon paper and pristine carbon paper electrodes. (h) The adsorption and catalytic effect of MoSe2/CNT on LiPSs.

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出版历程
  • 收稿日期:  2020-11-08
  • 修回日期:  2020-12-18
  • 刊出日期:  2021-02-01

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