Effect of Y-doping on the phase relation and electrical properties of Fe-doped BaZrO3

Kim, Dong‐Young; Lee, Daae; Joo, Jong Hoon

doi:10.1016/j.jeurceramsoc.2017.09.019

Cited by 15 publications

(3 citation statements)

References 23 publications

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“…72 Similarly, Kim et al reported that BaZr 0.6 Fe 0.3 Y 0.1 O 3− δ displayed the highest proton conduction, reaching ∼2.8 × 10 −5 S cm −1 at 800 °C. 73 Wei et al utilized La dopants to synthesize Ba 0.95 La 0.05 Fe 0.8 Zr 0.1 Y 0.1 O 3− δ (BLFZY), which resulted in improved stability of CO 2 and H 2 O, reduced TEC, and increased electronic conductivity. The reduction of lattice parameters and oxygen vacancy concentration after La doping led to an increase in electrical conductivity in BLFZY.…”

Section: Typical Types Of Tcp Cathodesmentioning

confidence: 99%

Exploring the potential of triple conducting perovskite cathodes for high-performance solid oxide fuel cells: a comprehensive review

Lu,

Liu,

Zhang

et al. 2023

J. Mater. Chem. A

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Section: Typical Types Of Tcp Cathodesmentioning

confidence: 99%

Exploring the potential of triple conducting perovskite cathodes for high-performance solid oxide fuel cells: a comprehensive review

Lu,

Liu,

Zhang

et al. 2023

J. Mater. Chem. A

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“…However, BaCeO 3 -based perovskites show low stability in H 2 O and/or CO 2 -containing atmospheres, which limits their practical application [21][22][23]. Acceptor-doped BaZrO 3 is considered a good electrolyte material, especially with a substitution of 20% mol of yttrium [24][25][26]. In contrast to BaCeO 3 -based material, BaZr 0.8 Y 0.2 O 3−δ (BZY20) presents excellent chemical stability [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Reactive Magnetron Sputtering for Y-Doped Barium Zirconate Electrolyte Deposition in a Complete Protonic Ceramic Fuel Cell

Lescure,

François,

Charleux

et al. 2024

Crystals

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Yttrium-doped barium zirconate is a commonly used electrolyte material for Protonic Ceramic Fuel Cells (PCFC) due to its high protonic conductivity and high chemical stability. However, it is also known for its poor sinterability and poor grain boundary conductivity. In this work, in response to these issues, reactive magnetron sputtering was strategically chosen as the electrolyte deposition technique. This method allows the creation of a 4 µm tick electrolyte with a dense columnar microstructure. Notably, this technique is not widely utilized in PCFC fabrication. In this study, a complete cell is elaborated without exceeding a sintering temperature of 1350 °C. Tape casting is used for the anode, and spray coating is used for the cathode. The material of interest is yttrium-doped barium zirconate with the formula BaZr0.8Y0.2O3−δ (BZY). The anode consists of a NiO-BZY cermet, while the cathode is composed of BZY and Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSFC) in a 50:50 weight ratio. The electrochemical impedance spectroscopy analysis reveals a global polarization resistance of 0.3 Ω cm2, indicating highly efficient interfaces between electrolytes and electrodes.

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“…In contrast, Y-doped BaZrO 3 , also called BZY, shows high chemical stability and an acceptable total conductivity at 600 • C, typically 10 −3 S•cm −1 [12][13][14][15][16]. For these reasons, BZY is widely considered a promising electrolyte candidate for PCEC [17][18][19]. Furthermore, high electrochemical performances are guaranteed as the electrolyte gets smaller and denser.…”

Section: Introductionmentioning

confidence: 99%

X-ray Micro-Computed Tomography: A Powerful Device to Analyze the 3D Microstructure of Anode-Electrolyte in BaZr0.8Y0.2O3 Protonic Ceramic Electrochemical Cells and the Reduction Behavior

Lescure

Gelin²,

François

et al. 2022

Membranes

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New advanced fuel cell technologies are moving towards high-temperature proton conductors (HTPCs) to meet environmental issues. Their elaboration remains a challenge and micro-computed tomography (µCT) is an innovative way to control their quality. NiO-BZY anodic supports of a protonic ceramic electrochemical cell (PCEC), elaborated by co-tape casting and co-sintered at 1350 °C, were coated with a BZY20 electrolyte layer by DC magnetron sputtering. The µCT allowed to observe defects inside the volume of these PCEC half-cells and to show their evolution after an annealing treatment at 1000 °C and reduction under hydrogen. This technique consists in obtaining a 3D reconstruction of all the cross-sectional images of the whole sample, slice by slice. This allows seeing inside the sample at any desired depth. The resolution of 0.35 µm is perfectly adapted to this type of problem considering the thickness of the different layers of the sample and the size of the defects. Defects were detected, and their interpretation was possible thanks to the 3D view, such as the phenomenon of NiO grain enlargement explaining defects in the electrolyte, the effect of NiO reduction, and finally, some anomalies due to the shaping process. Ways to anticipate these defects were then proposed.

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Effect of Y-doping on the phase relation and electrical properties of Fe-doped BaZrO3

Cited by 15 publications

References 23 publications

Exploring the potential of triple conducting perovskite cathodes for high-performance solid oxide fuel cells: a comprehensive review

Exploring the potential of triple conducting perovskite cathodes for high-performance solid oxide fuel cells: a comprehensive review

Reactive Magnetron Sputtering for Y-Doped Barium Zirconate Electrolyte Deposition in a Complete Protonic Ceramic Fuel Cell

X-ray Micro-Computed Tomography: A Powerful Device to Analyze the 3D Microstructure of Anode-Electrolyte in BaZr0.8Y0.2O3 Protonic Ceramic Electrochemical Cells and the Reduction Behavior

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