The effect of Mo concentration on the electrical properties of CaV1-xMoxO3-δ (x=0.2 ÷ 0.6) anode materials for solid oxide fuel cells

被引：5

作者：

Belyakov, S. A. ^{[1
]}

Shkerin, S. N. ^{[1
]}

Kellerman, D. G. ^{[2
]}

Plekhanov, M. S. ^{[1
,3
]}

机构：

[1] UB RAS, Inst High Temp Electrochem, 20 Acad skaya Str, Ekaterinburg 620137, Russia

[2] UB RAS, Inst Solid State Chem, 91 Pervomayskaya Str, Ekaterinburg 620990, Russia

[3] Ural Fed Univ, 19 Mira Str, Ekaterinburg 620002, Russia

来源：

MATERIALS RESEARCH BULLETIN | 2020年 / 129卷

关键词：

Perovskite-based SOFC material; Molybdate; Vanadate; Metal-like conductivity; Magnetic susceptibility; Thermal expansion; Seebeck coefficient; METAL-INSULATOR-TRANSITION; X-RAY; NEUTRON-DIFFRACTION; PEROVSKITE; STABILITY; CONDUCTIVITY; MAGNETOTRANSPORT; TRANSPORT;

D O I：

10.1016/j.materresbull.2020.110904

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A perovskite-like CaV1-xMoxO3-delta (x = 0.2 divided by 0.6) were prepared by a formate solution method with the final annealing at 1473 K in an H-2 atmosphere. X-ray diffraction analysis was used for sample characterisation. Metallike electric conductivity was observed using a 4-probe DC technique from 573 to 1123 K in dry H-2. Magnetic susceptibility measurements showed the absence of localised V and Mo valence electrons. The Seebeck coefficient was measured between temperatures of 573-1123 K in dry H-2, supporting the hypothesis that electronic conductivity is predominant. Thermal expansion coefficients (TEC) are obtained by dilatometry from 373 to 1123 K in dry H-2. TEC values increase with temperature from 10 ppm to 15 ppm K-1 and decrease with Mo concentration.

引用

页数：7

共 43 条

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