LITHIUM ION CONDUCTING, GARNET-LIKE COMPOUNDS

摘要

The invention relates to a lithium ion conducting compound having a garnet-like crystalline structure. In order to increase the lithium ion conductivity, the compound according to the invention has the general chemical formula: Lin[A(3-a'-a'')A' (a')A'' (a ")][B(2-b'-b")B' (b')B'' (b ")][C' (C' )C'' (c'' )]O12 wherein A, A' and A" stand for a dodecahedral position of the garnet-like crystalline structure, wherein A stands for La, Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and/or Yb, A' stands for Ca, Sr and/or Ba, A" stands for Na and/or K, 0 < a'< 2 and 0 < a"< 1, wherein B, B' and B" stand for an octahedral position of the garnet-like crystalline structure, wherein B stands for Zr, Hf and/or Sn, B' stands for Ta, Nb, Sb and/or Bi, B" stands for at least one element selected from the group consisting of Te, W and Mo, 0 < b' < 2 and 0 < b" < 2, wherein C and C" stand for a tetrahedral position of the garnet-like crystalline structure, wherein C stands for AI and/or Ga, C" stands for Si and/or Ge, 0 < c' < 0.5 and 0 < c" < 0.4, and wherein n = 7 + a'+ 2-a"- b'- 2-b"- 3-c'- 4-c" and 5.5 < n < 6.875.