The effect of the nature of pore former on the microstructure of SOFC anodes based on NiO and 10YSZ formed by hybrid 3d printing

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Abstract

In this work, anodes based on nickel oxide and zirconium oxide-stabilized yttrium oxide were developed by the method of hybrid inkjet 3D printing with laser treatment. The granulometric composition of the NiO/Zr0.9Y0.1O2 (10YSZ) composite and the rheological characteristics of printing pastes based on it were determined. Experiments were carried out on printing three-dimensional test objects using the developed ceramic paste. The influence of additionally injected into the composition pore formers – graphite and potato starch – on the rheological characteristics of the paste was studied. The obtained samples of supporting anodes were studied by a complex of physicochemical methods to determine the morphological and structural characteristics.

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About the authors

I. A. Malbakhova

Institute of Solid State Chemistry and Mechanochemistry SB RAS

Author for correspondence.
Email: malbakhova.inna@yandex.ru
Russian Federation, Novosibirsk

A. S. Bagishev

Institute of Solid State Chemistry and Mechanochemistry SB RAS

Email: malbakhova.inna@yandex.ru
Russian Federation, Novosibirsk

A. M. Vorobyev

Institute of Solid State Chemistry and Mechanochemistry SB RAS

Email: malbakhova.inna@yandex.ru
Russian Federation, Novosibirsk

Т. А. Borisenko

Institute of Solid State Chemistry and Mechanochemistry SB RAS

Email: malbakhova.inna@yandex.ru
Russian Federation, Novosibirsk

A. I. Titkov

Institute of Solid State Chemistry and Mechanochemistry SB RAS

Email: malbakhova.inna@yandex.ru
Russian Federation, Novosibirsk

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Supplementary files

Supplementary Files
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2. Fig. 1. Granulometry of the original powders and the powder used for 3D printing of anodes.

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3. Fig. 2. Dependence of dynamic viscosity on the shear rate for an organic binder and printing compositions based on NiO/YSZ composite with different mass contents of the solid phase in the pastes.

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4. Fig. 3. Micrographs of NiO/10YSZ anodes obtained from a paste with a solid phase mass content of 60%: (a) 40-fold magnification, (b) 500-fold magnification.

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5. Fig. 4. Dependence of dynamic viscosity on the shear rate for printed composites based on NiO/10YSZ with different types of blowing agents.

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6. Fig. 5. Dependence of dynamic viscosity on the shear rate for printed composites based on NiO/10YSZ depending on the mass fraction of the blowing agent at a mass fraction of the composite of 60%: (a) blowing agent graphite, (b) blowing agent starch.

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7. Fig. 6. Micrographs of pore-forming agents used in printing compositions based on NiO/10YSZ: (a) starch, (b) graphite.

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8. Fig. 7. Granulometry of powders of pore-forming agents used for 3D printing of anodes: (a) starch, (b) graphite.

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9. Fig. 8. Micrographs of NiO/10YSZ anodes depending on the type of blowing agent with a blowing agent mass content of 10%: (a), (b) sample with starch blowing agent; (c), (d) sample with graphite blowing agent.

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10. Fig. 9. Micrographs of a cleavage of a printed sample of NiO/10YSZ composite anode after thermal sintering with different mass contents of graphite blowing agent: (a) without blowing agent, (b) 5%, (c) 10%, (d) 15%.

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Note

Публикуется по материалам IX Всероссийской конференции с международным участием “Топливные элементы и энергоустановки на их основе”, Черноголовка, 2022.


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