阅读说明：本技术 包含经涂覆的阴极活性材料和作为电解质添加剂的甲硅烷基膦酸酯电化学电池 (Electrochemical cell comprising coated cathode active material and silyl phosphonate as electrolyte additive ) 是由 M·A·门德斯阿古德洛 M·阿尔夫 H·佐默 J·哈格 H·沃尔夫 J·D·赫克尔 于 2019-03-08 设计创作，主要内容包括：本发明涉及一种电化学电池,其包含选自如下的阴极活性材料：含有Mn和至少一种第二过渡金属的混合锂过渡金属氧化物；含有Ni、Al和至少一种第二过渡金属的锂插层混合氧化物；以及锂金属磷酸盐,其中所述颗粒状阴极活性材料的外表面至少部分涂覆有选自过渡金属氧化物、镧系元素氧化物以及周期系统第2、13和14族的金属和半金属的氧化物的氧化物；以及包含至少一种选自式(I)化合物和含有式(II)结构的甲硅烷基膦酸酯化合物的甲硅烷基膦酸酯的电解质组合物。<Image he="323" wi="700" file="DDA0002676860730000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>(The present invention relates to an electrochemical cell comprising a cathode active material selected from the group consisting of: a mixed lithium transition metal oxide containing Mn and at least one second transition metal; comprisesA lithium intercalation mixed oxide having Ni, Al and at least one second transition metal; and lithium metal phosphate, wherein the outer surface of the particulate cathode active material is at least partially coated with an oxide selected from the group consisting of transition metal oxides, lanthanide oxides, and oxides of metals and semi-metals of groups 2, 13, and 14 of the periodic system; and an electrolyte composition comprising at least one silyl phosphonate selected from compounds of formula (I) and silyl phosphonate compounds comprising a structure of formula (II).)