High proton conduction in grain-boundary-free yttrium-doped barium zirconate films grown by pulsed laser deposition

Daniele Pergolesi; Emiliana Fabbri; Alessandra D'Epifanio; Elisabetta Di Bartolomeo; Antonello Tebano; Simone Sanna; Silvia Licoccia; Giuseppe Balestrino; Enrico Traversa

doi:10.1038/nmat2837

High proton conduction in grain-boundary-free yttrium-doped barium zirconate films grown by pulsed laser deposition

Daniele Pergolesi, Emiliana Fabbri, Alessandra D'Epifanio, Elisabetta Di Bartolomeo, Antonello Tebano, Simone Sanna, Silvia Licoccia, Giuseppe Balestrino, Enrico Traversa^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

486 Scopus citations

Abstract

Reducing the operating temperature in the 500-750°C range is needed for widespread use of solid oxide fuel cells (SOFCs). Proton-conducting oxides are gaining wide interest as electrolyte materials for this aim. We report the fabrication of BaZr_0.8Y_0.2O₃-δ (BZY) proton-conducting electrolyte thin films by pulsed laser deposition on different single-crystalline substrates. Highly textured, epitaxially oriented BZY films were obtained on (100)-oriented MgO substrates, showing the largest proton conductivity ever reported for BZY samples, being 0.11 S cm^-1 at 500°C. The excellent crystalline quality of BZY films allowed for the first time the experimental measurement of the large BZY bulk conductivity above 300°C, expected in the absence of blocking grain boundaries. The measured proton conductivity is also significantly larger than the conductivity values of oxygen-ion conductors in the same temperature range, opening new potential for the development of miniaturized SOFCs for portable power supply.

Original language	English (US)
Pages (from-to)	846-852
Number of pages	7
Journal	NATURE MATERIALS
Volume	9
Issue number	10
DOIs	https://doi.org/10.1038/nmat2837
State	Published - Oct 2010
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@article{8f0f1111d41d4bba8a1f32fd24d7b4f7,

title = "High proton conduction in grain-boundary-free yttrium-doped barium zirconate films grown by pulsed laser deposition",

abstract = "Reducing the operating temperature in the 500-750°C range is needed for widespread use of solid oxide fuel cells (SOFCs). Proton-conducting oxides are gaining wide interest as electrolyte materials for this aim. We report the fabrication of BaZr0.8Y0.2O3-δ (BZY) proton-conducting electrolyte thin films by pulsed laser deposition on different single-crystalline substrates. Highly textured, epitaxially oriented BZY films were obtained on (100)-oriented MgO substrates, showing the largest proton conductivity ever reported for BZY samples, being 0.11 S cm-1 at 500°C. The excellent crystalline quality of BZY films allowed for the first time the experimental measurement of the large BZY bulk conductivity above 300°C, expected in the absence of blocking grain boundaries. The measured proton conductivity is also significantly larger than the conductivity values of oxygen-ion conductors in the same temperature range, opening new potential for the development of miniaturized SOFCs for portable power supply.",

author = "Daniele Pergolesi and Emiliana Fabbri and Alessandra D'Epifanio and {Di Bartolomeo}, Elisabetta and Antonello Tebano and Simone Sanna and Silvia Licoccia and Giuseppe Balestrino and Enrico Traversa",

note = "Funding Information: This work was partly supported by the Ministry of University and Research (MiUR) of Italy under the frame of the FISR project {\textquoteleft}Polymer and Ceramic Electrolyte for Fuel Cells: System Validation and Development of New Materials{\textquoteright}, by the Ministry of Foreign Affairs (MAE) of Italy under the frame of the Italy-USA Joint Laboratory on {\textquoteleft}Nanomaterials for Hydrogen and Sustainable Energy{\textquoteright}, and by the World Premier International Research Center Initiative of MEXT, Japan. The authors would like to thank A. Chincarini for his helpful contribution for X-ray photoelectron spectroscopy analysis, and D. Marr{\`e} and E. Bellingeri for clarifying discussions and comments.",

year = "2010",

month = oct,

doi = "10.1038/nmat2837",

language = "English (US)",

volume = "9",

pages = "846--852",

journal = "NATURE MATERIALS",

issn = "1476-1122",

publisher = "Nature Publishing Group",

number = "10",

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T1 - High proton conduction in grain-boundary-free yttrium-doped barium zirconate films grown by pulsed laser deposition

AU - Pergolesi, Daniele

AU - Fabbri, Emiliana

AU - D'Epifanio, Alessandra

AU - Di Bartolomeo, Elisabetta

AU - Tebano, Antonello

AU - Sanna, Simone

AU - Licoccia, Silvia

AU - Balestrino, Giuseppe

AU - Traversa, Enrico

N1 - Funding Information: This work was partly supported by the Ministry of University and Research (MiUR) of Italy under the frame of the FISR project ‘Polymer and Ceramic Electrolyte for Fuel Cells: System Validation and Development of New Materials’, by the Ministry of Foreign Affairs (MAE) of Italy under the frame of the Italy-USA Joint Laboratory on ‘Nanomaterials for Hydrogen and Sustainable Energy’, and by the World Premier International Research Center Initiative of MEXT, Japan. The authors would like to thank A. Chincarini for his helpful contribution for X-ray photoelectron spectroscopy analysis, and D. Marrè and E. Bellingeri for clarifying discussions and comments.

PY - 2010/10

Y1 - 2010/10

N2 - Reducing the operating temperature in the 500-750°C range is needed for widespread use of solid oxide fuel cells (SOFCs). Proton-conducting oxides are gaining wide interest as electrolyte materials for this aim. We report the fabrication of BaZr0.8Y0.2O3-δ (BZY) proton-conducting electrolyte thin films by pulsed laser deposition on different single-crystalline substrates. Highly textured, epitaxially oriented BZY films were obtained on (100)-oriented MgO substrates, showing the largest proton conductivity ever reported for BZY samples, being 0.11 S cm-1 at 500°C. The excellent crystalline quality of BZY films allowed for the first time the experimental measurement of the large BZY bulk conductivity above 300°C, expected in the absence of blocking grain boundaries. The measured proton conductivity is also significantly larger than the conductivity values of oxygen-ion conductors in the same temperature range, opening new potential for the development of miniaturized SOFCs for portable power supply.

AB - Reducing the operating temperature in the 500-750°C range is needed for widespread use of solid oxide fuel cells (SOFCs). Proton-conducting oxides are gaining wide interest as electrolyte materials for this aim. We report the fabrication of BaZr0.8Y0.2O3-δ (BZY) proton-conducting electrolyte thin films by pulsed laser deposition on different single-crystalline substrates. Highly textured, epitaxially oriented BZY films were obtained on (100)-oriented MgO substrates, showing the largest proton conductivity ever reported for BZY samples, being 0.11 S cm-1 at 500°C. The excellent crystalline quality of BZY films allowed for the first time the experimental measurement of the large BZY bulk conductivity above 300°C, expected in the absence of blocking grain boundaries. The measured proton conductivity is also significantly larger than the conductivity values of oxygen-ion conductors in the same temperature range, opening new potential for the development of miniaturized SOFCs for portable power supply.

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JO - NATURE MATERIALS

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ER -

High proton conduction in grain-boundary-free yttrium-doped barium zirconate films grown by pulsed laser deposition

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