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Nickel oxide-gadolinium doped ceria synthesized by new methods as anodes material for solid oxide fuel cells

S. Ghamari Arbati, M. Ranjbar

2022ensolid oxide fuel cellselectrochemical performancemicrostructuresthree-phase boundaries

Abstract

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In this study, nickel oxide-gadolinium doped ceria, NiO–GDC, composite powder was synthesized by the sol-gel method with a new Ni(II) complex. A new Ni(II) complex, chemical formula [Ni(μ-L)] n(NO3)2, L = N’-(pyridine-2-yl)methylene) isonicotinohydrazide), was used as a new precursor. The new Ni(II) complex was prepared by a reaction between ligand, L, and Ni(NO3).6H2O using the hydrothermal method. Then the NiO–GDC powders were synthesized using Ce(NO3)3.6H2O, and Gd(NO3)3.6H2O, and the as-synthesized new Ni(II) complex [Ni(μ-L)] n(NO3)2 with the sol-gel method. The NiO-GDC powder was modified to increase the performance of solid oxide fuel cells (SOFCs) operating at intermediate temperatures (600–800 ℃) by increasing the three-phase boundary region in the anode. Finally, the NiO–GDC anode powders prepared with the new precursor were compared with the NiO-GDC anode powders synthesized from metal nitrates as a precursor. The results showed that the modified NiO-GDC anode had more three-phase boundaries, TPB, a more uniform microstructure, a higher specific surface area, and a porous structure that effectively improved the electrochemical performance of the electrode. SOFC half-cell resistance with this high-performance anode decreased by 85 % at 800 ℃ compared to conventional half-cells.

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Cite This Work

@article{4354abaa-454a-40f7-9cec-21fff9ebfc85,
  title={Nickel oxide-gadolinium doped ceria synthesized by new methods as anodes material for solid oxide fuel cells},
  author={S. Ghamari Arbati and M. Ranjbar},
  year={2022},
  language={en}
}
TY  - JOUR
TI  - Nickel oxide-gadolinium doped ceria synthesized by new methods as anodes material for solid oxide fuel cells
AU  - S. Ghamari Arbati
AU  - M. Ranjbar
PY  - 2022
LA  - en
ER  -

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