Nouvelles solutions solides LI(MIV)2−x(NIV)x(PO4)3 (L = Li,Na M,N = Ge,Sn,Ti,Zr,Hf) synthèse et étude par diffraction x et conductivité ionique
作者:Jean-Marc Winand、André Rulmont、Pierre Tarte
DOI:10.1016/0022-4596(91)90308-5
日期:1991.8
compounds LI(MIV)2(PO4)2 and new solid solutions LI(MIV)2−x(NIV)x(PO4)3 (L = Li,Na, M,N = Ge,Sn,Ti,Zr,Hf) have been synthesized and studied by X-ray powder diffraction and ionic conductivity measurements. A new single phase of the compound LiSn2(PO4)3 has been obtained for the first time. Concerning the solid solutions, continuous series of well-crystallized single phases can be synthesized in the Ti
定钠超离子导体样化合物大号我(中号IV)2(PO 4)2和新固溶大号我(中号IV)2- X(Ñ IV)X(PO 4)3(大号=锂,钠,中号,Ñ通过X射线粉末衍射和离子电导率测量已经合成和研究了Ge(Sn,Ti,Ti,Zr,Hf)。化合物LiSn 2(PO 4)3的新单相第一次获得。关于固溶体,可以在Ti↔Ge,Sn↔Ti和Sn↔Zr系统中合成连续系列的结晶良好的单相,但不能在Ge↔Zr,Zr↔Ti和Sn↔Ge系统中合成,由于离子半径的重要差异。当固溶体是可能的,离子导电性的有变化X是除了在LISN定期2- X的Zr X(PO 4)3,在那里它达到接近最大X = 1(σ≈7 10 -3 Ω -1厘米- 1 at 600 K)。