ELECTRODE UNIT FOR AN ELECTROCHEMICAL DEVICE
    2.
    发明申请
    ELECTRODE UNIT FOR AN ELECTROCHEMICAL DEVICE 审中-公开
    电化学装置用电极单元

    公开(公告)号:US20160351970A1

    公开(公告)日:2016-12-01

    申请号:US15116531

    申请日:2015-01-28

    Applicant: BASF SE

    Abstract: An electrode unit for an electrochemical device, comprising (i) a solid electrolyte which divides a space for molten cathode material, selected from the group consisting of elemental sulfur and polysulfide of the alkali metal anode material, and a space for molten alkali metal anode material, and (ii) a porous solid state electrode directly adjacent to the solid electrolyte within the space for the cathode material, with a non-electron-conducting intermediate layer S present between the solid state electrode and the solid electrolyte, wherein this intermediate layer S has a thickness in the range from 0.5 to 5 mm and, before the first charge of the electrochemical device, has been impregnated fully with a polysulfide composition, comprising (A) pure polysulfides Met2Sx with Met=alkali metal of the alkali metal anode material selected from lithium, sodium, potassium, and x is dependent on the alkali metal and is 2, 3, 4 or 5 for Na and is 2, 3, 4, 5, 6, 7, 8 for Li and is 2, 3, 4, 5, 6 for K, or (B) mixtures of the polysulfides of one and the same alkali metal from (A) with one another.

    Abstract translation: 一种用于电化学装置的电极单元,包括:(i)固体电解质,其分离由碱金属阳极材料的元素硫和多硫化物组成的组中选择的熔融阴极材料的空间,以及熔融碱金属阳极材料的空间 ,和(ii)与阴极材料空间内的固体电解质直接相邻的多孔固态电极,固体电极和固体电解质之间存在非电子传导中间层S,其中该中间层S 厚度在0.5至5mm的范围内,并且在电化学装置的第一次充电之前已经完全用多硫化物组合物浸渍,所述多硫化物组合物包含(A)选择的碱金属阳极材料的Met =碱金属的纯多硫化物Met2Sx 从锂,钠,钾和x取决于碱金属,Na为2,3,4或5,Li为2,3,4,5,6,7,8,为2,3,4 ,5,6 对于K,或(B)来自(A)的一种和相同碱金属的多硫化物的混合物。

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