Surface and impedance spectroscopy studies of Li2.8Sc1.8−yYyZr0.2(PO4)3 (where y=0, 0.1) solid electrolyte ceramics

Салкус, Т.; Kežionis, A.; Kazlauskienė, V.; Miškinis, J.; Dindune, A.; Kanepe, Z.; Ronis, J.; Орлюкас, А.Ф.

doi:10.1016/j.mseb.2010.05.002

Cited by 12 publications

(13 citation statements)

References 28 publications

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“…These results can be assigned to the fact that in the lattice of the compounds one energy position for Li ions dominates. The binding energy of Li 1s core level XPS changed in the range from 55.3 to 55.0 eV and these results accord with [17]. A decrease of parameter x determines an increase of the binding energy of Li 1s core level XPS.…”

Section: Resultssupporting

confidence: 77%

X-ray photoelectron and broadband impedance spectroscopy of Li1+4xTi2-x(PO4)3 solid electrolyte ceramics

Орлюкас¹,

Venckutė²,

Miškinis³

et al. 2013

Lith. J. Phys.

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Li 1+4x Ti 2-x (PO 4 ) 3 (where x = 0.2, 0.5) compounds were synthesized by solid state reaction, and ceramics were sintered. The structure of compounds was studied by X-ray diffraction. Elemental compositions and binding energies of Ti 2p, P 2p, O 1s, and Li 1s core level at the surfaces of Li 1+4x Ti 2-x (PO 4 ) 3 ceramics were determined by energy dispersive X-ray spectrometer (EDX) and X-ray photoelectron spectroscopy (XPS). Impedance spectroscopy of the ceramics was performed in the frequency range of 10 Hz-1 MHz by the four-electrode method and in the frequency range of 1 MHz -3 GHz by the microwave impedance spectrometer. The measurements of electrical properties of the ceramics were carried out in the temperature interval of (300-700) K. The increase of the stoichiometric factor x of the compounds leads to the increase of bulk conductivities and values of dielectric permittivity.

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Section: Resultssupporting

confidence: 77%

X-ray photoelectron and broadband impedance spectroscopy of Li1+4xTi2-x(PO4)3 solid electrolyte ceramics

Орлюкас¹,

Venckutė²,

Miškinis³

et al. 2013

Lith. J. Phys.

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“…Measurements of the electrical properties of Na 2 Zn 0.5 Mn 0.5 P 2 O 7 ceramic samples in a low frequency range (10 Hz -2 MHz) were carried out by the two probe method [18]. The electrodes were fired at 920 K on the sintered cylindrical samples by applying conductive Pt paste (Gwent Electronics Materials Ltd.).…”

Section: Methodsmentioning

confidence: 99%

Preparation, structure, surface and impedance analysis of Na₂Zn_0.5Mn_0.5P₂O₇ ceramics

Venckutė¹,

Dindune²,

Valdniece³

et al. 2017

Lith. J. Phys.

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The Na 2 Zn 0.5 Mn 0.5 P 2 O 7 powder was prepared by the solid state reaction method. The powder structure was studied by X-ray diffraction (XRD) in the temperature range from room temperature (RT) to 520 K. The results of XRD measurements show that the obtained Na 2 Zn 0.5 Mn 0.5 P 2 O 7 is a mixture of two phases: Na 2 MnP 2 O 7 , which crystallizes in the triclinic space group P -1, and Na 2 ZnP 2 O 7 , which crystallizes in the tetragonal space group P4 2 /mmm. The chemical compositions of the powder and ceramic samples were investigated by an energy dispersive X-ray spectrometer (EDX) and X-ray fluorescence spectroscopy (XFS). The surface of ceramics was examined by X-ray photoelectron spectroscopy (XPS). The electrical conductivity and dielectric permittivity of the ceramics were investigated from RT to 700 K in the frequency range 10-10 9 Hz. The relaxational dispersion of electrical conductivity in the investigated frequency and temperature range was found.

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“…The authors reported that Y 3 + is a suitable substitution ion for Zr 4 + in LZP, causing an increase of the lattice parameters and cell volume due to the different values of ionic radii of Zr 4 + (0.72 Å) and Y 3 + (0.9 Å). [24] Savitha et al [23] and Zhang et al [22] examined the systems Li x AlZr(PO 4 ) 3 (x = 1.8, 2.0, 2.2) and Li 1 + x Al x Zr 2À x (PO 4 ) 3 (x = 0.2, 0.225, 0.25, 0.275, 0.3, 0.5), respectively, to obtain an ionic conductivity of 4.4 × 10 À 5 S cm À 1 for the sample Li 2.2 AlZr(PO 4 ) 3 at 400 °C [23] and 3.1 × 10 À 6 S cm À 1 for Li 1.0.275 Al 0.275 Zr 1.725 (PO 4 ) 3 at RT. [22] Cassel et al [20] obtained a stable rhombohedral phase with Li 1.2 Ca 0.1 Zr 1.9 (PO 4 ) 3 , which exhibited an enhanced ionic conductivity at RT of 1.2 × 10 À 7 S cm À 1 and 7.2 × 10 À 7 S cm À 1 for the material prepared by solid-state reaction and by sol-gel synthesis, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…The ionic conductivity of Li 3 Sc 2 (PO 4 ) 3 (LSP) was measured at 10 À 7 S cm À 1 . [24] Amatucci et al investigated the optimization of LSP by substituting Al 3 + and Y 3 + for Sc 3 + . The ionic conductivities at RT were reported to be 1.5 × 10 À 5 S cm À 1 , 5 × 10 À 6 S cm À 1 and 5 × 10 À 5 S cm À 1 for Li 3 Sc 1.6 Al 0.4 (PO 4 ) 3 , Li 3 Sc 1.5 Y 0.5 (PO 4 ) 3 and Li 4.8 Sc 1.4 (PO 4 ) 3 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Survey of Zirconium‐Containing NaSICON‐type Solid‐State Li⁺ Ion Conductors with the Aim of Increasing Reduction Stability by Partial Cation Substitution

Loutati

Odenwald

Aktekin

et al. 2022

Batteries & Supercaps

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Various compositions of the series Li 1 + x M 3 +x Zr 2À x (PO 4 ) 3 where M 3 + = Al 3 + , Sc 3 + , Y 3 + were prepared by solution-assisted solidstate reaction, since they could have a higher reduction stability as solid electrolytes in lithium batteries than in germanium-or titanium-containing materials. The influence of substitution on crystallographic parameters, density, and ionic conductivity were investigated. The cation substitution of M 3 + (M = Al, Sc, Y) for Zr 4 + in LiZr 2 (PO 4 ) 3 stabilizes the rhombohedral NaSICON structure (space group R � 3c) at room temperature and increases the ionic conductivity significantly. Here, at 25 °C and with a consistent relative density of 94 %-96 %, an ionic conductivity of 2.7 × 10 À 5 S cm À 1 , 6.7 × 10 À 5 S cm À 1 , and 3.6 × 10 À 6 S cm À 1 was achieved with the compositions Li 1.2 Sc 0.2 Zr 1.8 (PO 4 ) 3 , Li 1.2 Y 0.2 Zr 1.8 (PO 4 ) 3 , and Li 1.2 Al 0.2 Zr 1.8 (PO 4 ) 3 , respectively . In comparison with Li 1 + x Sc x Zr 2À x (PO 4 ) 3 , the Y 3 + substitution in LiZr 2 (PO 4 ) 3 enhanced the ionic conductivity slightly and denoted the maximum Li + ionic conductivity obtained at room temperature. However, substitution with Al 3 + decreased the ionic conductivity. For the first time, this work provides a complete overview of three series of solid Li-ion conductors in the Li 2 O-M 2 O 3 -ZrO 2 -P 2 O 5 system where M = Al, Sc, Y. Noticeable differences in the chemistry of resulting compounds were observed, which likely depend on the ionic radius of the cations being substituted. The series with Sc showed complete miscibility from x = 0 to x = 2 with a continuous change of the NaSICON polymorphs. The series with Y showed a solubility limit at about x = 0.3 and higher substitution levels led to the increasing formation of YPO 4 . The series with Al exhibited continuously decreasing ionic conductivity until x = 1, whereupon the investigation was terminated due to its very low conductivity of about 10 À 10 S cm À 1 .

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Surface and impedance spectroscopy studies of Li2.8Sc1.8−yYyZr0.2(PO4)3 (where y=0, 0.1) solid electrolyte ceramics

Cited by 12 publications

References 28 publications

X-ray photoelectron and broadband impedance spectroscopy of Li<sub>1+4<i>x</i></sub>Ti<sub>2-<i>x</i></sub>(PO<sub>4</sub>)<sub>3</sub> solid electrolyte ceramics

X-ray photoelectron and broadband impedance spectroscopy of Li<sub>1+4<i>x</i></sub>Ti<sub>2-<i>x</i></sub>(PO<sub>4</sub>)<sub>3</sub> solid electrolyte ceramics

Preparation, structure, surface and impedance analysis of Na₂Zn_0.5Mn_0.5P₂O₇ ceramics

Survey of Zirconium‐Containing NaSICON‐type Solid‐State Li⁺ Ion Conductors with the Aim of Increasing Reduction Stability by Partial Cation Substitution

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Surface and impedance spectroscopy studies of Li2.8Sc1.8−yYyZr0.2(PO4)3 (where y=0, 0.1) solid electrolyte ceramics

Cited by 12 publications

References 28 publications

X-ray photoelectron and broadband impedance spectroscopy of Li<sub>1+4<i>x</i></sub>Ti<sub>2-<i>x</i></sub>(PO<sub>4</sub>)<sub>3</sub> solid electrolyte ceramics

X-ray photoelectron and broadband impedance spectroscopy of Li<sub>1+4<i>x</i></sub>Ti<sub>2-<i>x</i></sub>(PO<sub>4</sub>)<sub>3</sub> solid electrolyte ceramics

Preparation, structure, surface and impedance analysis of Na2Zn0.5Mn0.5P2O7 ceramics

Survey of Zirconium‐Containing NaSICON‐type Solid‐State Li+ Ion Conductors with the Aim of Increasing Reduction Stability by Partial Cation Substitution

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Preparation, structure, surface and impedance analysis of Na₂Zn_0.5Mn_0.5P₂O₇ ceramics

Survey of Zirconium‐Containing NaSICON‐type Solid‐State Li⁺ Ion Conductors with the Aim of Increasing Reduction Stability by Partial Cation Substitution