A single crystal X-ray and powder neutron diffraction study on NASICON-type Li1+xAlxTi2-x(PO4)3 (0 ≤ x ≤ 0.5) crystals: Implications on ionic conductivity

被引：64
|
作者：
Redhammer, G. J. [1 ]
Rettenwander, D. [2 ]
Pristat, S. [3 ]
Dashjav, E. [3 ]
Kumar, C. M. N. [4 ,5 ]
Topa, D. [6 ]
Tietz, F. [3 ,7 ]
机构：
[1] Salzburg Univ, Dept Chem & Phys Mat, Div Mat Sci & Mineral, Hellbrunnerstr 34, A-5020 Salzburg, Austria
[2] MIT, Ctr Mat Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[3] Forschungszentrum Julich GmbH, Inst Energy & Climate Res Mat Synth & Proc IEK 1, D-52425 Julich, Germany
[4] Forschungszentrum Julich GmbH, JCNS, Outstn SNS, Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[5] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA
[6] Nat Hist Museum Vienna, Burgring 7, A-1010 Vienna, Austria
[7] Forschungszentrum Julich GmbH, Helmholtz Inst Munster, D-52425 Julich, Germany
来源：
SOLID STATE SCIENCES | 2016年 / 60卷
基金：
奥地利科学基金会;
关键词：
LiTi2(PO4)(3); Al3+ substitution; LATP; NASICON; Single crystal X-ray diffraction; Neutron diffraction; LITHIUM MOBILITY; SOLID-ELECTROLYTE; NMR; LI1+XTI2-XALX(PO4)(3); CONDUCTORS; BATTERIES; IMPEDANCE;
D O I：
10.1016/j.solidstatesciences.2016.08.011
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Single crystals of NASICON-type material Li1+xTi2-xAlx(FO4)(3) (LATP) with 0 <= x <= 0.5 were successfully grown using long-term sintering techniques. Sample material was studied by chemical analysis, single crystal X-ray and neutron diffraction. The Ti4+ replacement scales very well with the Al3+ and Li+ incorporation. The additional Li+ thereby enters the M3 cavity of the NASICON framework at x, y, z similar to (0.07, 0.34, 0.09) and is regarded to be responsible for the enhanced Li+ conduction of LATP as compared to Al-free LTP. Variations in structural parameters, associated with the Ti4+ substitution with Al3+ + Li+ will be discussed in detail in this paper. (C) 2016 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：99 / 107
页数：9
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