Properties of Ceria Based Novel Anode Nanopowders Synthesized by Glycine-Nitrate Process

• Authors: Ö. Yıldız , A. Soydan , A. Ata , B. Tunaboylu , D. Akın , E. İpcizade
• Languages of publication: EN

Abstracts

EN

Novel anode nanopowder materials consisting of ceria-based components synthesized by glycine-nitrate process were investigated for solid oxide fuel cells. Glycine-nitrate process involves a self-combustion reaction at 220C of water-based nitrate and glycine solutions which subsequently can reach up to 1200°C. The resulting morphology, the size of particles and the formation of crystalline phases were characterized by differential scanning calorimetry, X-ray diffraction, transmission electron microscopy, scanning electron microscopy, the Brunauer-Emmett-Teller method and Nanosizer. It was determined that dopants in ceria such as Co, Ni, Cu, V and Fe had significant effect on the morphology and size. The size distribution measured by Nanosizer was 50-600 nm, transmission electron microscopy, 5-200 nm and the Brunauer-Emmett-Teller method 100-120 nm and specific surface area of powders in the range 67.45-72.05 m^2 g^{-1} as measured by the Brunauer-Emmett-Teller method. Particles were observed to have spherical structures for Cu and Fe doped powders and rod-shaped in a porous tuff microstructure for those doped with Co and Ni. Vanadium doping helped to decrease the porosity and initiated the process of spheroidization of particles.

Keywords

EN

82.47.Ed; 81.07.Wx; 81.20.Ka; 81.20.Ev; 81.05.Mh; 61.46.Df

Discipline

• 81.07.Wx: Nanopowders
• 81.05.Mh: Cermets, ceramic and refractory composites
• 82.47.Ed: Solid-oxide fuel cells (SOFC)
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
• 61.46.Df: Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)
• 81.20.Ka: Chemical synthesis; combustion synthesis(for electrochemical synthesis, see 82.45.Aa)

• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 2
• Pages: 432-435

Dates

published

2013-02

Contributors

author

Ö. Yıldız

• Kocaeli University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, TR-41380 Kocaeli, Turkey

author

A. Soydan

• Gebze Institute of Technology, Faculty of Engineering, Department of Materials Science and Engineering, TR-41400 Gebze/Kocaeli, Turkey

author

A. Ata

• Gebze Institute of Technology, Faculty of Engineering, Department of Materials Science and Engineering, TR-41400 Gebze/Kocaeli, Turkey

author

B. Tunaboylu

• Istanbul Sehir University, TR-34100 İstanbul, Turkey

author

D. Akın

• Gebze Institute of Technology, Faculty of Engineering, Department of Materials Science and Engineering, TR-41400 Gebze/Kocaeli, Turkey

author

E. İpcizade

• Gebze Institute of Technology, Faculty of Engineering, Department of Materials Science and Engineering, TR-41400 Gebze/Kocaeli, Turkey

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Identifiers

DOI

10.12693/APhysPolA.123.432