PREPARATION, STRUCTURE, SURFACE AND IMPEDANCE ANALYSIS OF Na2Zn0.5Mn0.5P2O7 CERAMICS

被引：0

作者：

Venckute, V. ^{[1
]}

Dindune, A. ^{[2
]}

Valdniece, D. ^{[2
]}

Krumina, A. ^{[2
]}

Lelis, M. ^{[3
]}

Jasulaitiene, V. ^{[4
]}

Maneikis, A. ^{[4
]}

Daugela, S. ^{[1
]}

Salkus, T. ^{[1
]}

Kezionis, A. ^{[1
]}

Orliukas, A. F. ^{[1
]}

机构：

[1] Vilnius Univ, Fac Phys, Sauletekio 9-3, LT-10222 Vilnius, Lithuania

[2] Riga Tech Univ, Inst Inorgan Chem, Paula Valdena 3-7, LV-1048 Riga, Latvia

[3] Lithuanian Energy Inst, Ctr Hydrogen Energy Technol, Breslaujos 3, LT-44403 Kaunas, Lithuania

[4] Natl Ctr Phys Sci & Technol, Sauletekio 3, LT-10222 Vilnius, Lithuania

来源：

LITHUANIAN JOURNAL OF PHYSICS | 2017年 / 57卷 / 03期

关键词：

sodium; pyrophosphate; crystal structure; conductivity; dielectric permittivity; SODIUM-ION BATTERIES; NA2COP2O7 PYROPHOSPHATE CATHODE; SOLID-ELECTROLYTE CERAMICS; X-RAY PHOTOELECTRON; SPECTROSCOPY; CONDUCTIVITY; NA2MNP2O7; OXIDATION; MECHANISM; OXIDES;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Na2Zn0.5Mn0.5P2O7 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 Na2Zn0.5Mn0.5P2O7 is a mixture of two phases: Na2MnP2O7, which crystallizes in the triclinic space group P (1) over bar, and Na2ZnP2O7, 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.

引用

页码：183 / 193

页数：11

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