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首页> 外文期刊>Journal of industrial and engineering chemistry >Electrochemical properties of non-aqueous electrolytes containing spiro-type ammonium salts
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Electrochemical properties of non-aqueous electrolytes containing spiro-type ammonium salts

机译：含螺型铵盐的非水电解质的电化学性能

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摘要

Electrochemical properties of organic solvent electrolytes containing salt additive were investigated by means of cyclic voltammetry, ionic conductivity and charge-discharge curve. The electrolyte was prepared by a mixture of propylene carbonate (PC) and dimethyl carbonate (DMC), tetraethylammo-nium tetrafluoroborate (TEABF4) and spiro-1,1'-bipyrolidinium tetrafluoroborate (SBPBF4) as a salt additive. The aim of this paper is to evaluate the effect of spiro-type quaternary ammonium salt on electrochemical properties. The bulk resistance of the mixture electrolytes and interfacial resistance were investigated using an AC impedance method. The result shows that SBPBF4 has good solubility in PC/DMC and the ionic conductivity is comparable to TEABF4 in PC/DMC. From the experimental results, by using the SBPBF4 salt, the interfacial resistance was decreased and capacity and ionic conductivity were increased. These results may be due to the higher mobility or ion dissociation of the SBP cation with smaller ion size than the TEA cation against the meso- or micro-pores of the activated carbons electrode.
机译：通过循环伏安法，离子电导率和充放电曲线研究了含盐添加剂有机溶剂电解质的电化学性能。电解质是由碳酸亚丙酯（PC）和碳酸二甲酯（DMC），四乙基铵四氟硼酸酯（TEABF4）和螺环1,1'-联吡咯烷四氟硼酸酯（SBPBF4）制成的。本文的目的是评估螺型季铵盐对电化学性能的影响。使用交流阻抗法研究了混合电解质的体电阻和界面电阻。结果表明，SBPBF4在PC / DMC中具有良好的溶解性，其离子电导率与PC / DMC中的TEABF4相当。从实验结果来看，使用SBPBF4盐可降低界面电阻，并提高容量和离子电导率。这些结果可能是由于SBP阳离子比TEA阳离子具有更高的迁移率或离子解离性，而该离子尺寸比TEA阳离子更小，而活性炭电极的中孔或微孔却是如此。

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