XRD, impedance, and Mossbauer spectroscopy study of the Li3Fe2(PO4)3 + Fe2O3 composite for Li ion batteries

被引：7

作者：

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

Kazakevicius, E. ^{[1
]}

Reklaitis, J. ^{[2
]}

Davidonis, R. ^{[2
]}

Dindune, A. ^{[3
]}

Kanepe, Z. ^{[3
]}

Ronis, J. ^{[3
]}

Baltrunas, D. ^{[2
]}

Venckute, V. ^{[1
]}

Salkus, T. ^{[1
]}

Kezionis, A. ^{[1
]}

机构：

[1] Vilnius State Univ, Fac Phys, LT-10222 Vilnius, Lithuania

[2] Ctr Phys Sci & Technol, State Res Inst, LT-02300 Vilnius, Lithuania

[3] Riga Tech Univ, Inst Inorgan Chem, LV-2169 Salaspils, Latvia

来源：

IONICS | 2015年 / 21卷 / 08期

关键词：

Impedance spectroscopy; Mossbauer spectroscopy; Hyperfine interactions; Composite; Electrical conductivity; LITHIUM ION CONDUCTORS; ELECTRICAL-CONDUCTIVITY; HEMATITE; STATE; DISPERSION; FILMS;

D O I：

10.1007/s11581-015-1418-y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The synthesis procedure of the Li3Fe2(PO4)(3) + Fe2O3 composite is presented. The monoclinic (A type) and hematite phases were detected by X-ray diffraction after the synthesis of the composite. The structural alpha-beta (at a temperature of 460 K) and beta-gamma (at a temperature of 523 K) phase transitions in the composite were indicated by the anomalies of the electrical conductivity, dielectric permittivity, and changes of activation energies of conductivity. Two phase transitions have been detected in the Li3Fe2(PO4)(3) + Fe2O3 composite by Fe-57 Mossbauer spectroscopy: the phase transition in Li3Fe2(PO4)(3) from the paramagnetic to antiferromagnetic phase at temperature T (N) = 29.5 K and the Morin phase transition in Fe2O3 at temperature T (M) = 235 K.

引用

页码：2127 / 2136

页数：10

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