Intermediate-temperature ceramic fuel cells with thin film yttrium-doped barium zirconate electrolytes

Joon Hyung Shim; Joong Sun Park; Jihwan An; Turgut M. Gür; Sangkyun Kang; Fritz B. Prinz

doi:10.1021/cm900820p

Intermediate-temperature ceramic fuel cells with thin film yttrium-doped barium zirconate electrolytes

Joon Hyung Shim, Joong Sun Park, Jihwan An, Turgut M. Gür, Sangkyun Kang, Fritz B. Prinz

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

145 Citations (Scopus)

Abstract

Structural and microstructural properties as well as the fuel cell performance of anhydrous protonconducting yttria-doped barium zirconate (BYZ) membranes were investigated. The membranes were nominally about 100 nm thick and were fabricated by both atomic layer deposition (ALD) and pulsed laser deposition (PLD) techniques on micromachined Si substrates. Electrochemical cells (H ₂, Pt/BYZ/Pt, air) were fabricated using porous platinum electrodes deposited by sputtering. The cells were tested in the temperature regime 200-450 °C. Power densities of 136 mW/cm ² at 400 °C employing a BYZ membrane fabricated by ALD and 120 mW/cm ² at 450 °C employing a BYZ fabricated byPLDclearly represent the highest reported values in the literature at these temperatures. The difference in the cell performances for the ALD BYZ versus PLD BYZ membranes is attributed to differences in their surface morphology and interfacial microstructure.

Original language	English
Pages (from-to)	3290-3296
Number of pages	7
Journal	Chemistry of Materials
Volume	21
Issue number	14
DOIs	https://doi.org/10.1021/cm900820p
Publication status	Published - 2009 Jul 28
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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title = "Intermediate-temperature ceramic fuel cells with thin film yttrium-doped barium zirconate electrolytes",

abstract = "Structural and microstructural properties as well as the fuel cell performance of anhydrous protonconducting yttria-doped barium zirconate (BYZ) membranes were investigated. The membranes were nominally about 100 nm thick and were fabricated by both atomic layer deposition (ALD) and pulsed laser deposition (PLD) techniques on micromachined Si substrates. Electrochemical cells (H 2, Pt/BYZ/Pt, air) were fabricated using porous platinum electrodes deposited by sputtering. The cells were tested in the temperature regime 200-450 °C. Power densities of 136 mW/cm 2 at 400 °C employing a BYZ membrane fabricated by ALD and 120 mW/cm 2 at 450 °C employing a BYZ fabricated byPLDclearly represent the highest reported values in the literature at these temperatures. The difference in the cell performances for the ALD BYZ versus PLD BYZ membranes is attributed to differences in their surface morphology and interfacial microstructure.",

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AU - Shim, Joon Hyung

AU - Park, Joong Sun

AU - An, Jihwan

AU - Gür, Turgut M.

AU - Kang, Sangkyun

AU - Prinz, Fritz B.

PY - 2009/7/28

Y1 - 2009/7/28

N2 - Structural and microstructural properties as well as the fuel cell performance of anhydrous protonconducting yttria-doped barium zirconate (BYZ) membranes were investigated. The membranes were nominally about 100 nm thick and were fabricated by both atomic layer deposition (ALD) and pulsed laser deposition (PLD) techniques on micromachined Si substrates. Electrochemical cells (H 2, Pt/BYZ/Pt, air) were fabricated using porous platinum electrodes deposited by sputtering. The cells were tested in the temperature regime 200-450 °C. Power densities of 136 mW/cm 2 at 400 °C employing a BYZ membrane fabricated by ALD and 120 mW/cm 2 at 450 °C employing a BYZ fabricated byPLDclearly represent the highest reported values in the literature at these temperatures. The difference in the cell performances for the ALD BYZ versus PLD BYZ membranes is attributed to differences in their surface morphology and interfacial microstructure.

AB - Structural and microstructural properties as well as the fuel cell performance of anhydrous protonconducting yttria-doped barium zirconate (BYZ) membranes were investigated. The membranes were nominally about 100 nm thick and were fabricated by both atomic layer deposition (ALD) and pulsed laser deposition (PLD) techniques on micromachined Si substrates. Electrochemical cells (H 2, Pt/BYZ/Pt, air) were fabricated using porous platinum electrodes deposited by sputtering. The cells were tested in the temperature regime 200-450 °C. Power densities of 136 mW/cm 2 at 400 °C employing a BYZ membrane fabricated by ALD and 120 mW/cm 2 at 450 °C employing a BYZ fabricated byPLDclearly represent the highest reported values in the literature at these temperatures. The difference in the cell performances for the ALD BYZ versus PLD BYZ membranes is attributed to differences in their surface morphology and interfacial microstructure.

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Intermediate-temperature ceramic fuel cells with thin film yttrium-doped barium zirconate electrolytes

Abstract

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