An investigation on the behavior of manganese cobaltite spinel oxide as the SOFC interconnect coating materials

Subject Areas :

Pooria  Lesani ¹ (دانش آموخته کارشناسی ارشد- دانشگاه تهران)
Alireza  Babaei ² (Assistant Professor- University of Tehran)
Abolghasem  Ataie ³ (استاد- دانشگاه تهران)

Received: 2016-08-27 Accepted : 2018-03-12 Published : 2018-02-20

Keywords: Solid oxide fuel cell, Spinel, Manganese Cobaltite, Coprecipitation, Interconnect,

Abstract :

In this study, Manganese cobaltite (MnCo2O4) spinel powders were synthesized by co-precipitation method. X ray diffraction (XRD) patterns show that the spinel phase was formed at around 350°C. Formation of spinel phase was further completed by increasing temperature up to 1000°C. Additionally, XRD patterns prove that MnCo2O4 spinel material has been stable in this temperature range. Field emission scanning electron microscope observations show that plate like particles with an average diameter of 148 and thickness of 18 nm was converted to equiaxed particles with an average particle size of 1.5 µm by increasing calcination temperature from 350 to 1000°C. Investigation of the coating of uncalcined and calcined powder on AISI 430 ferritic stainless steel shows that a proper dense coating is developed on the stainless steel surface by using uncalcined precursor powders. And also, this coating performs well by prohibiting of outward diffusion of Fe from the substrate. In this way, a low thickness chromia layer (Cr2O3) is formed between the coating and the substrate. EDX analysis shows that a mixed spinel zone is formed in the interface of the coating and the substrate due to diffusion of some elements such as Mn, Cr, and Fe from substrate to the coating, as well as Mn and Co from coating to the substrate.

References:

 

[1]     T. X. Nguyen, “Spinel oxide protective coatings for solid oxide fuel cell interconnectsˮ, 2013.

 

[2]       ل. رضازاده، ز. همنبرد، س. باغشاهی و ا. نوزاد گلی کند، "بررسی ویژگی­های درزگیرهای شیشه-سرامیک متعلق به سیستم BaO-B₂O₃-SiO₂ مورد کاربرد در پیل­های سوختی اکسید جامد"، فصلنامه علمی-پژوهشی فرایندهای نوین در مهندسی مواد، دوره 8، شماره 3، صفحه 53-63 پاییز 1393.

 

[3]     N. Shaigan, W. Qu, D. G. Ivey & W. Chen, “A review of recent progress in coatings, surface modifications and alloy developments for solid oxide fuel cell ferritic stainless steel interconnectsˮ, Journal of Power Sources, Vol. 195, pp. 1529-1542, 2010.

 

[4]     K. Wang, Y. Liu & J. W. Fergus, “Interactions between SOFC interconnect coating materials and chromiaˮ, Journal of the American Ceramic Society, Vol. 94, pp. 4490-4495, 2011.

 

[5]     P. Gannon, V. I. Gorokhovsky, M. Deibert, R. J. Smith, A. Kayani, P. White & et al., “Enabling inexpensive metallic alloys as SOFC interconnects: An investigation into hybrid coating technologies to deposit nanocomposite functional coatings on ferritic stainless steelsˮ, International Journal of Hydrogen Energy, Vol. 32, pp. 3672-3681, 2007.

 

[6]     H. E. Mohamed, “Oxidation Behavior of Some Cr Ferritic Steels for High Temperature Fuel Cellsˮ, Faculty of Engineering Cairo University In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Metallurgical Engineering Faculty of Engineering, Cairo University Giza, 2012.

 

[7]     H. Ebrahimifar, M. Zandrahimi & H. Habibifar, “Improved electrical conductivity of coated ferritic stainless steel used in SOFC as interconnect at 700 Cˮ, International Journal of Electronic Engineering Research, Vol. 2, pp. 519, 2010.

 

[8]     K. E. Sickafus, J. M. Wills & N. W. Grimes, “Structure of spinelˮ, Journal of the American Ceramic Society, Vol. 82, pp. 3279-3292, 1999.

 

[9]     Y. Fang, C. Wu, X. Duan, S. Wang & Y. Chen, “High-temperature oxidation process analysis of MnCo₂O₄ coating on Fe–21Cr alloyˮ, international journal of hydrogen energy, Vol. 36, pp. 5611-5616, 2011.

 

[10] J. Prakash & S. Buddhudu, “Synthesis and analysis of LiNbO₃ ceramic powders by co-precipitation methodˮ, Indian Journal of Pure and Applied Physics, Vol. 50, pp. 320-324, 2012.

 

[11] P. Lesani, A. Babaei, A. Ataie & E. Mostafavi, “Nanostructured MnCo₂O₄ synthesized via co-precipitation method for SOFC interconnect applicationˮ, International Journal of Hydrogen Energy, 2016

 

[12]    م. جعفری و س. ع. حسن زاده تبریزی، "بررسی پارامترهای موثر در سنتز نانو کریستال­های اسپینل CoAl₂O₄ به روش پلی اکریل آمید"، فصلنامه علمی-پژوهشی فرایندهای نوین در مهندسی مواد، دوره 9، شماره 3، صفحه 191-197 پاییز 1394.

 

[13] Z. Yang, G. Xia, S. P. Simner & J. W. Stevenson, “Thermal growth and performance of manganese cobaltite spinel protection layers on ferritic stainless steel SOFC interconnectsˮ, Journal of the Electrochemical Society, Vol. 152A, pp. 1896-1901, 2005.

 

[14] F. Borges, D. Melo, M. Camara, A. Martinelli, J. Soares, J. De Araujo & et al., “Magnetic behavior of nanocrystalline MnCo₂O₄ spinelsˮ, Journal of magnetism and magnetic materials, Vol. 302, pp. 273-277, 2006.

 

[15] N. Hosseini, M. Abbasi, F. Karimzadeh & G. Choi, “Development of Cu_1.3Mn_1.7O₄ spinel coating on ferritic stainless steel for solid oxide fuel cell interconnectsˮ, Journal of Power Sources, Vol. 273, pp. 1073-1083, 2015.

 

[16] C. Yu, P. Sun, P. Kao & C. Chang, “Evolution of microstructure during annealing of a severely deformed aluminumˮ, Materials Science and Engineering, Vol. 366A, pp. 310-317, 2004.