A New Version of the Lithium Ion Conducting Plastic Crystal Solid Electrolyte,Advanced Energy Materials

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A New Version of the Lithium Ion Conducting Plastic Crystal Solid Electrolyte
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-09-14 , DOI: 10.1002/aenm.201801324
Iolanda S. Klein ₁ , Zuofeng Zhao ₁ , Stephen K. Davidowski ₁ , Jeffery L. Yarger ₁ , C. Austen Angell ₁

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Portable electronic devices are predominantly powered by lithium ion batteries in which the electrolyte is a liquid or gel of lithium salts dissolved in molecular solvents. There have been many attempts to replace the flammable liquid component of the electrolyte by alternative alkali metal transporting media, such as superionic crystals, alkali‐conducting glassy solids, ionic liquids, salt‐in‐molecular plastic crystal solvent, and salt‐in‐ionic plastic crystal solvents. Except for the first two of the above, which have their own problems, all the above have the disadvantage that the alkali cation is the least mobile of the ionic species due to its high charge/radius ratio. Here, some new, silylsulfate‐based are introduced. Members of the class of lithium ion conductor in which the alkali ion is the only cationic species present, and the salt itself is a plastic crystal, a solid in which the anion centers of mass are ordered, but the anion orientations are disordered and dynamic (best example NaCB₉H₁₀, see text). It is shown that depending on the nature of the anion, the conductivity may be within a factor of two of the standard liquid carbonate electrolyte. The soft, spreadable electrolyte, impregnated in Celgard separators, supports truly reversible Li insertion into the LiCoO₂ cathode.

中文翻译：

锂离子导电塑性晶体固体电解质的新版本

便携式电子设备主要由锂离子电池供电，其中电解质是溶解在分子溶剂中的锂盐的液体或凝胶。已经进行了许多尝试，以替代性的碱金属传输介质来代替电解质中的易燃液体成分，例如超离子晶体，传导碱的玻璃状固体，离子液体，分子盐形式的塑料晶体溶剂和离子形式的盐形式。塑料晶体溶剂。除了上述的前两个有其自身的问题外，以上所有均具有以下缺点：由于其高的电荷/半径比，碱金属阳离子是离子种类中流动性最小的。在此，介绍了一些新的基于甲硅烷基硫酸盐的产品。锂离子导体类别的成员，其中碱离子是唯一存在的阳离子物种，₉ H ₁₀，参见文本）。已经显示出，取决于阴离子的性质，电导率可以在标准液态碳酸盐电解质的两倍的范围内。柔软，可散布的电解质浸渍在Celgard隔膜中，支持真正可逆的Li插入LiCoO ₂阴极。

更新日期：2018-09-14

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