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

[51] La0.6Sr0.2Ca0.2Fe0.8Ni0.2O3 thin films obtained by pulsed laser ablation: Effect of the substrate on the electrochemical behavior [J].

Ruiz de Larramendi, I. ;

Vives, S. ;

Ortiz-Vitoriano, N. ;

Ruiz de Larramendi, J. I. ;

Arriortua, M. I. ;

Rojo, T. .

SOLID STATE IONICS, 2011, 192 (01) :584-590

[52]

Saher Saim, 2016, 2016 19 INT MULT C I, P1

[53] Electrical and electrochemical characteristics of La0.6Sr0.4CoO3-δ cathode materials synthesized by a modified citrate-EDTA sol-gel method assisted with activated carbon for proton-conducting solid oxide fuel cell application [J].

Samat, Abdullah Abdul ;

Jais, Abdul Azim ;

Somalu, Mahendra Rao ;

Osman, Nafisah ;

Muchtar, Andanastuti ;

Lim, Kean Long .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2018, 86 (03) :617-630

[54] A high-performance cathode for the next generation of solid-oxide fuel cells [J].

Shao, ZP ;

Haile, SM .

NATURE, 2004, 431 (7005) :170-173

[55] Electrical conductivity and oxygen diffusion behaviour of the (La0.8Sr0.2)0.95CrxFe1-xO3-δ (x=0.3, 0.5 and 0.7) A-site deficient perovskites [J].

Shen, Zonghao ;

Kilner, John A. ;

Skinner, Stephen J. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2018, 20 (27) :18279-18290

[56] Basic aspects and challenges of semiconductor gas sensors [J].

Shimizu, Y ;

Egashira, M .

MRS BULLETIN, 1999, 24 (06) :18-24

[57] Pulsed laser deposition of La0.6Ca0.4Fe0.8Ni0.2O3 - δ thin films on SrTiO3: Preparation, characterization and electrical properties [J].

Sohrabi, P. ;

Daneshmandi, S. ;

Salamati, H. ;

Ranjbar, M. .

THIN SOLID FILMS, 2014, 571 :180-186

[58] Materials for fuel-cell technologies [J].

Steele, BCH ;

Heinzel, A .

NATURE, 2001, 414 (6861) :345-352

[59] Microwave assisted synthesis and sintering of La0.8Sr0.2Ga0.83Mg0.17O2.815 [J].

Subasri, R ;

Mathews, T ;

Sreedharan, OM .

MATERIALS LETTERS, 2003, 57 (12) :1792-1797

[60] Cathode materials for solid oxide fuel cells: a review [J].

Sun, Chunwen ;

Hui, Rob ;

Roller, Justin .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2010, 14 (07) :1125-1144

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