Investigation of structural, electrical and ionic properties of La0.6Ca0.4Fe0.8Ni0.2O3 as an IT-SOFC cathode synthesized through microwave-assisted method

被引：6

作者：

Ekraminejad, Nasibeh ^{[1
]}

Jafari, Majid ^{[1
]}

Amiri, Taghi ^{[1
]}

Shahsavari, Elyas ^{[1
]}

Salamati, Hadi ^{[1
]}

Ranjbar, Mandi ^{[1
]}

机构：

[1] Isfahan Univ Technol IUT, Dept Phys, Esfahan 8415683111, Iran

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2022年 / 278卷

关键词：

LCFN; Sol; -gel; Microwave; Electrical conductivity; Diffusion coefficient; Activation energy; OXIDE FUEL-CELLS; SURFACE EXCHANGE KINETICS; OXYGEN-TRANSPORT KINETICS; CONDUCTIVITY RELAXATION; ELECTROCHEMICAL PROPERTIES; CHEMICAL DIFFUSION; PEROVSKITE CATHODES; GRAIN-SIZE; FE; PERFORMANCE;

D O I：

10.1016/j.matchemphys.2021.125680

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, structural, electrical and ionic properties of La0.6Ca0.4Ni0.2Fe0.8O3-delta synthesized with microwaveassisted heating is investigated and compared with a sample synthesized by conventional method. Samples are prepared by sol-gel method. X-ray diffraction indicates that both samples have orthorhombic symmetry with Pnma space group. The electrical conductivity is measured by four-probe method and the maximum electrical conductivity of the microwave-assisted sample (LCFN-MWC) is about 29.6 Scm- 1. Ionic properties of samples are studied using electrical relaxation technique. Oxygen diffusion coefficient and oxygen exchange coefficient of LCFN-MWC are found to be 1.3 x 10(-4) cm(2)S(-1) and 6.4 x 10-3 cmS(-1) at 600 degrees C, respectively. Moreover, the associated activation energies are about 0.70 eV and 0.30 eV for LCFN-MWC.

引用

页数：9

共 67 条

[1] Enhanced electrochemical performance of LSCF cathode through selection of optimum fabrication parameters [J].

Ali, S. A. Muhammed ;

Anwar, Mustafa ;

Baharuddin, Nurul Akidah ;

Somalu, Mahendra Rao ;

Muchtar, Andanastuti .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2018, 22 (01) :263-273

[2] Enhancement of the interfacial polarization resistance of La0.6Sr0.4Co0.2Fe0.8O3-δ cathode by microwave-assisted combustion method [J].

Ali, S. A. Muhammed ;

Anwar, Mustafa ;

Somalu, Mahendra Rao ;

Muchtar, Andanastuti .

CERAMICS INTERNATIONAL, 2017, 43 (05) :4647-4654

[3] Influence of strontium content on the oxygen surface exchange kinetics and oxygen diffusion in La1-xSrxCoO3-δ oxides [J].

Ananyev, M. V. ;

Porotnikova, N. M. ;

Kurumchin, E. Kh. .

SOLID STATE IONICS, 2019, 341

[4] Strain-controlled oxygen vacancy formation and ordering in CaMnO3 [J].

Aschauer, Ulrich ;

Pfenninger, Reto ;

Selbach, Sverre M. ;

Grande, Tor ;

Spaldin, Nicola A. .

PHYSICAL REVIEW B, 2013, 88 (05)

[5] Chemical diffusion in perovskite cathodes of solid oxide fuel cells:: the Sr doped LaMn1-xMxO3 (M=Co, Fe) systems [J].

Badwal, SPS ;

Jiang, SP ;

Love, J ;

Nowotny, J ;

Rekas, M ;

Vance, ER .

CERAMICS INTERNATIONAL, 2001, 27 (04) :419-429

[6]

Barbir F., 2013, PEM Fuel Cells: Theory and Practice

[7] IMPORTANCE OF THE SURFACE EXCHANGE KINETICS AS RATE-LIMITING STEP IN OXYGEN PERMEATION THROUGH MIXED-CONDUCTING OXIDES [J].

BOUWMEESTER, HJM ;

KRUIDHOF, H ;

BURGGRAAF, AJ .

SOLID STATE IONICS, 1994, 72 (pt 2) :185-194

[8] High-temperature microwave processing of materials [J].

Bykov, YV ;

Rybakov, KI ;

Semenov, VE .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2001, 34 (13) :R55-R75

[9] Crystal Structure, Oxygen Deficiency, and Oxygen Diffusion Path of Perovskite-Type Lanthanum Cobaltites La0.4Ba0.6CoO3-δ and La0.6Sr0.4CoO3-δ [J].

Chen, Yi-Ching ;

Yashima, Masatomo ;

Ohta, Takashi ;

Ohoyama, Kenji ;

Yamamoto, Shinji .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (08) :5247-5255

[10] Oxygen reduction on LaMnO3-based cathode materials in solid oxide fuel cells [J].

Choi, YongMan ;

Mebane, David S. ;

Lin, M. C. ;

Liu, Meilin .

CHEMISTRY OF MATERIALS, 2007, 19 (07) :1690-1699

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