Protonic-Electronic Mixed Conduction and Hydrogen Permeation in BaCe[sub 0.9−x]Y[sub 0.1]Ru[sub x]O[sub 3−α]

Matsumoto, Hiroshige; Shimura, Tetsuo; Higuchi, Tohru; Tanaka, Hiroomi; Katahira, Koji; Otake, Takanori; Kudo, Takao; Yashiro, Keiji; Kaimai, Atsushi; Kawada, Tatsuya; Mizusaki, Junichiro

doi:10.1149/1.1852442

Cited by 72 publications

(45 citation statements)

References 20 publications

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“…A more recent approach to improving the electron conductivity of perovskites has been to introduce a transition metal (e.g., Ru) as a partial substitute for Ce in Ydoped BaCeO 3 . A significant increase in the hydrogen permeation was observed due to an increase in ambipolar diffusion associated with hole conduction [96]. Another challenge is to optimize surface exchange reaction at the membrane/gas interface either by modifying the surface structure of the materials or by using coatings of catalytic materials, which facilitate H 2 dissociation/reassociation reactions.…”

Section: Application Of Proton Conductors As Mixed Ionic and Electronmentioning

confidence: 99%

Review of proton conductors for hydrogen separation

Phair

Badwal

2006

Ionics

223

132

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There is a global push to develop a range of hydrogen technologies for timely adoption of the hydrogen economy. This is critical in view of the depleting oil reserves and looming transport fuel shortage, global warming, and increasing pollution. Molecular hydrogen (H 2 ) can be generated by a number of renewable and fossil-fuel-based resources. However, given the high cost of H 2 generation by renewable energy at this stage, fossil or carbon fuels are likely to meet the short-to medium-term demand for hydrogen. In view of this, effective technologies are required for the separation of H 2 from a gas feed (by-products of coal or bio-mass gasification plants, or gases from fossil fuel partial oxidation or reforming) consisting mainly of H 2 and CO 2 with small quantities of other gases such as CH 4 , CO, H 2 O, and traces of sulphur compounds. Several technologies are under development for hydrogen separation. One such technology is based on ion transport membranes, which conduct protons or both protons and electrons. Although these materials have been considered for other applications, such as gas sensors, fuel cells and water electrolysis, the interest in their use as gas separation membranes has developed only recently. In this paper, various classes of proton-conducting materials have been reviewed with specific emphasis on their potential use as H 2 separation membranes in the industrial processes of coal gasification, natural gas reforming, methanol reforming and the watergas shift (WGS) reaction. Key material requirements for their use in these applications have been discussed.

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Section: Application Of Proton Conductors As Mixed Ionic and Electronmentioning

confidence: 99%

Review of proton conductors for hydrogen separation

Phair

Badwal

2006

Ionics

223

132

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show abstract

“…Matsumoto et al [62][63][64] recently reported that BaCeO 3 and SrZrO 3 co-doped with Ru and Y exhibit enhanced mixed proton-electron conductivity. The electronic conductivity, based upon X-ray absorption spectroscopy, was concluded to be p-type also under reducing conditions.…”

Section: Mixed Proton-electron Conducting Oxidesmentioning

confidence: 99%

Dense Ceramic Membranes for Hydrogen Separation

Norby

Haugsrud

2007

Membranes for Energy Conversion

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“…This proton conductor is expected as electrochemical applications such as hydrogen sensor and hydrogen fuel cell in the renewable energy source industry. Many experimental and theoretical investigations have been reported for ceramic and single crystal forms [3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Structural and Electrical Properties of BaCe0.90Y0.10O3-δ Thin Film on Al2O3 Substrate

Owaku

Iida

Fukawa

et al. 2012

Trans. Mat. Res. Soc. Japan

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The Y-doped BaCeO 3 (BaCe 0.90 Y 0.10 O 3-δ ) thin films have prepared on Al 2 O 3 (0001) substrates by RF magnetron sputtering. The thin films prepared at the substrate temperature of 300~500°C exhibits (002), (022) and (400) orientations. The thin film consists of grain with a diameter of 60~150 nm and smooth surface, although the grain size depends on substrate temperature. The prepared thin films were transparent. The electrical conductivity of the thin film exhibits thermal activation type behavior in H 2 O atmosphere of temperature region from 700 to 300°C. The activation energy (E A ) of the thin film estimated from the Arrhenius plot is 0.30~0.42 eV. The E A values of the thin films are lower than that of the bulk ceramics.

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Protonic-Electronic Mixed Conduction and Hydrogen Permeation in BaCe[sub 0.9−x]Y[sub 0.1]Ru[sub x]O[sub 3−α]

Cited by 72 publications

References 20 publications

Review of proton conductors for hydrogen separation

Review of proton conductors for hydrogen separation

Dense Ceramic Membranes for Hydrogen Separation

Structural and Electrical Properties of BaCe<sub>0.90</sub>Y<sub>0.10</sub>O<sub>3-δ</sub> Thin Film on Al<sub>2</sub>O<sub>3</sub> Substrate

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