Sites and Mobility of Lithium along the LiTiIn(PO) (0 ≤ ≤ 2) Series Deduced by XRD, NMR, and Impedance Spectroscopy.

The structure and Li conductivity has been investigated in the LiTiIn(PO) (0 ≤ ≤ 2) series prepared by the ceramic route at 900 °C. The XRD patterns of 0 ≤ ≤ 0.2 samples show the presence of rhombohedral (S.

Cation Miscibility and Lithium Mobility in NASICON LiTiSc(PO) (0 ≤ x ≤ 0.5) Series: A Combined NMR and Impedance Study.

Rhombohedral NASICON compounds with general formula LiTiSc(PO) (0 ≤ x ≤ 0.5) have been prepared using a conventional solid-state reaction and characterized by X-ray diffraction (XRD), nuclear magnetic resonance (NMR), and impedance spectroscopy. The partial substitution of Ti by Sc and Li in pristine LiTi(PO) increases unit-cell dimensions and the number of charge carriers.

Modeling Ti/Ge Distribution in LiTi2-xGex(PO4)3 NASICON Series by (31)P MAS NMR and First-Principles DFT Calculations.

Ti/Ge distribution in rhombohedral LiTi2-xGex(PO4)3 NASICON series has been analyzed by (31)P magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy and first-principles density functional theory (DFT) calculations. Nuclear magnetic resonance is an excellent probe to follow Ti/Ge disorder, as it is sensitive to the atomic scale environment without long-range periodicity requirements. In the samples considered here, PO4 units are surrounded by four Ti/Ge octahedra, and then, five different components ascribed to P(OTi)4, P(OTi)3(OGe), P(OTi)2(OGe)2, P(OTi)(OGe)3, and P(OGe)4 environments are expected in (31)P MAS NMR spectra of R3̅c NASICON samples.

Near constant loss regime in fast ionic conductors analyzed by impedance and NMR spectroscopies.

Universal dielectric response (UDR) and nearly constant loss (NCL) dispersive regimes have been investigated in fast ion conductors with perovskite and NASICON structure by using NMR and impedance spectroscopy (IS). In this study, the electrical behavior of La(0.5)Li(0.