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    • 74. 发明公开
    • Lithium ion conducting electrolytes
    • 锂离子电池Elektrolyt。
    • EP0576225A1
    • 1993-12-29
    • EP93304803.5
    • 1993-06-18
    • ARIZONA BOARD OF REGENTS
    • Angell, C. AustenLiu, Changle
    • H01M6/18
    • H01M10/0563H01M6/14H01M6/164H01M6/166H01M6/18H01M6/181H01M10/052H01M10/0565H01M2300/0037H01M2300/0085
    • A liquid, predominantly lithium-conducting, ionic electrolyte having exceptionally high conductivity at temperatures of 100°C or lower, including room temperature, and comprising the lithium salts selected from the group consisting of the thiocyanate, iodide, bromide, chloride, perchlorate, acetate, tetrafluoroborate, perfluoromethane sulfonate, perfluoromethane sulfonamide, tetrahaloaluminate, and heptahaloaluminate salts of lithium, with or without a magnesium-salt selected from the group consisting of the perchlorate and acetate salts of magnesium. Certain of the latter embodiments may also contain molecular additives from the group, of acetonitrile (CH₃CN) succinnonitrile (CH₂CN)₂, and tetraglyme (CH₃-O-CH₂-CH₂-O-)₂ (or like solvents) solvated to a Mg⁺² cation to lower the freezing point of the electrolyte below room temperature. Other particularly useful embodiments contain up to about 40, but preferably not more than about 25, mol percent of a long chain polyether polymer dissolved in the lithium salts to provide an elastic or rubbery solid electrolyte of high ambient temperature conductivity and exceptional 100°C conductivity. Another embodiment contains up to about but not more than 10 mol percent of a molecular solvent such as acetone.
    • 在100℃或更低的温度(包括室温)下具有特别高导电性的液体,主要为锂导电的离子电解质,并且包含选自硫氰酸盐,碘化物,溴化物,氯化物,高氯酸盐,乙酸盐 四氟硼酸盐,全氟甲烷磺酸盐,全氟甲烷磺酰胺,四卤铝酸盐和锂的七卤铝酸盐,具有或不具有选自镁的高氯酸盐和乙酸盐的镁盐。 后一个实施方案中的某些可能还含有溶剂化为Mg的分子添加剂,分子量为乙腈(CH 3 CN)琥珀腈(CH 2 CN)2和四甘醇二甲醚(CH3-O-CH2-CH2-O-) +> 2阳离子以降低电解液的凝固点低于室温。 其他特别有用的实施方案包含高达约40,但优选不超过约25摩尔%的溶解在锂盐中的长链聚醚聚合物,以提供具有高环境温度导电性和卓越的100℃电导率的弹性或橡胶状固体电解质 。 另一个实施方案含有约至多约10摩尔%的分子溶剂如丙酮。