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首页> 外文期刊>International Journal of Electrochemical Science >Effect of prop-1-ene-1,3-sultone on the Performances of Lithium Cobalt Oxide/Graphite Battery Operating Over a Wide Temperature Range
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Effect of prop-1-ene-1,3-sultone on the Performances of Lithium Cobalt Oxide/Graphite Battery Operating Over a Wide Temperature Range

机译：丙-1-烯-1,3-磺酸内酯对宽温度范围内锂钴氧化物/石墨电池性能的影响

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摘要

In this paper, we find that prop-1-ene-1,3-sultone (PES) must be a promising additive for the lithium ion battery operating over a wide temperature range. The effect of PES on the graphite anode and LiCoO2 cathode is systematically studied by cyclic voltammetry (CV), charge-discharge test, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The results demonstrate that PES could be reduced prior to the ethylene carbonate (EC) and formed a more stable SEI film on the graphite anode. Meanwhile, the PES could also form a film on LiCoO2 electrode. For these reasons, the LiCoO2/ artificial graphite (AG) battery using PES additive exhibits an excellent high temperature performances. The battery with PES additive could bear 2C charge/discharge cycle under 70℃ and the capacity retention could reach 90.1% after 300 cycles. Although PES additive will little increase the resistance of LiCoO2/AG cells and harm its low temperature performance, the discharge capacity retention of the battery with 1% PES can still reach 75% at -40℃. This demonstrates that PES must be a very promising additive for the battery operating over a wide temperature range.
机译：在本文中，我们发现丙-1-烯-1,3-磺内酯（PES）必须是在宽温度范围内工作的锂离子电池的有前途的添加剂。通过循环伏安法（CV），充放电测试，扫描电子显微镜（SEM）和X射线光电子能谱（XPS）系统研究了PES对石墨阳极和LiCoO2阴极的影响。结果表明，PES可以先于碳酸亚乙酯（EC）还原，并在石墨阳极上形成更稳定的SEI膜。同时，PES还可在LiCoO2电极上形成膜。由于这些原因，使用PES添加剂的LiCoO2 /人造石墨（AG）电池具有出色的高温性能。含PES添加剂的电池在70℃时可承受2C的充电/放电循环，经过300次循环后容量保持率可达到90.1％。尽管PES添加剂几乎不会增加LiCoO2 / AG电池的电阻并损害其低温性能，但使用1％PES的电池在-40℃时的放电容量保持率仍可达到75％。这表明PES必须是在宽温度范围内工作的电池非常有希望的添加剂。

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