BF3-EMC | 220991-85-5

• 英文名称: BF3-EMC
• CAS: 220991-85-5
• 化学式: C₄H₈BF₃O₃
• 分子量: 171.912
• InChiKey: JJYXJXDZPNKXII-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  碳酸甲乙酯 、 三氟化硼 反应 48.0h， 以97%的产率得到BF3-EMC
  参考文献：
  名称：

  BF3 碳酸盐的制备及其作为锂离子电池添加剂的电化学研究

  摘要：

  This study reports the behavior of the compounds BF3 center dot D (with D = dimethyl carbonate, ethylene carbonate, ethyl methyl carbonate, propylene carbonate) as electrolyte additives in Li[Ni0.33Co0.33Mn0.33O2]/graphite cells with LiPF6 (1 M) in EC:EMC (3:7 wt%) as electrolyte. The adducts were prepared from gaseous BF3 with the corresponding carbonates in a simple Lewis acid base reaction and fully characterized (FT-IR and NMR spectroscopy, single crystal X-ray diffraction). The electrochemical behavior of the additives was examined at concentrations of 1 wt% and 0.25 wt% added to the electrolyte. Electrochemical impedance spectroscopy of cells with 1 wt% additive, display a significantly lower cell impedance than cells without additive, but also a slightly decreased capacity. To combine the high capacity retention with a low cell impedance the concentration of the additive was reduced. Thus, cell testing with 0.25 wt% additive incorporated with the electrolyte showed no difference in capacity retention after 55 cycles at 25 degrees C, but had lower cell impedance. The rate-performance test shows a higher capacity retention for cells with additive at high C-rates. The surface chemistry of the electrodes was studied by X-ray photoelectron spectroscopy and suggests that the additives react on both electrodes (Li[Ni0.33Co0.33Mn0.33O2] and graphite) and improve the electrode interphases. (C) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.

  DOI：

  10.1149/1945-7111/ab80ad