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Laser induced densification of cerium gadolinium oxide: Application to single-chamber solid oxide fuel cells.

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Title: Laser induced densification of cerium gadolinium oxide: Application to single-chamber solid oxide fuel cells.
Authors: Mariño, Mariana1, Rieu, Mathilde1 rieu@emse.fr, Viricelle, Jean-Paul1, Garrelie, Florence2
Source: Applied Surface Science. Jun2016, Vol. 374, p370-374. 5p.
Subjects: Soil densification, Gadolinium compounds, Cerium oxides, Solid oxide fuel cells, Laser beams
Abstract: In single-chamber solid oxide fuel cells (SC-SOFC), anode and cathode are placed in a gas chamber where they are exposed to a fuel/air mixture. Similarly to conventional dual-chamber SOFC, the anode and the cathode are separated by an electrolyte. However, as in the SC-SOFC configuration the electrolyte does not play tightness role between compartments, this one can be a porous layer. Nevertheless, it is necessary to have a diffusion barrier to prevent the transportation of hydrogen produced locally at the anode to the cathode that reduces fuel cell performances. This study aims to obtain directly a diffusion barrier through the surface densification of the electrolyte Ce 0.9 Gd 0.1 O 1.95 (CGO) by a laser treatment. KrF excimer laser and Yb fiber laser irradiations were used at different fluences and number of pulses to modify the density of the electrolyte coating. Microstructural characterizations confirmed the modifications on the surface of the electrolyte for appropriate experimental conditions showing either grain growth or densified but cracked surfaces. Gas permeation and electrical conductivities of the modified electrolyte were evaluated. Finally SC-SOFC performances were improved for the cells presenting grain growth at the electrolyte surface. [ABSTRACT FROM AUTHOR]
Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 115212262
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  Data: Laser induced densification of cerium gadolinium oxide: Application to single-chamber solid oxide fuel cells.
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  Data: <searchLink fieldCode="AR" term="%22Mariño%2C+Mariana%22">Mariño, Mariana</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rieu%2C+Mathilde%22">Rieu, Mathilde</searchLink><relatesTo>1</relatesTo><i> rieu@emse.fr</i><br /><searchLink fieldCode="AR" term="%22Viricelle%2C+Jean-Paul%22">Viricelle, Jean-Paul</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Garrelie%2C+Florence%22">Garrelie, Florence</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Jun2016, Vol. 374, p370-374. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Soil+densification%22">Soil densification</searchLink><br /><searchLink fieldCode="DE" term="%22Gadolinium+compounds%22">Gadolinium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Cerium+oxides%22">Cerium oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+oxide+fuel+cells%22">Solid oxide fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+beams%22">Laser beams</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In single-chamber solid oxide fuel cells (SC-SOFC), anode and cathode are placed in a gas chamber where they are exposed to a fuel/air mixture. Similarly to conventional dual-chamber SOFC, the anode and the cathode are separated by an electrolyte. However, as in the SC-SOFC configuration the electrolyte does not play tightness role between compartments, this one can be a porous layer. Nevertheless, it is necessary to have a diffusion barrier to prevent the transportation of hydrogen produced locally at the anode to the cathode that reduces fuel cell performances. This study aims to obtain directly a diffusion barrier through the surface densification of the electrolyte Ce 0.9 Gd 0.1 O 1.95 (CGO) by a laser treatment. KrF excimer laser and Yb fiber laser irradiations were used at different fluences and number of pulses to modify the density of the electrolyte coating. Microstructural characterizations confirmed the modifications on the surface of the electrolyte for appropriate experimental conditions showing either grain growth or densified but cracked surfaces. Gas permeation and electrical conductivities of the modified electrolyte were evaluated. Finally SC-SOFC performances were improved for the cells presenting grain growth at the electrolyte surface. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.apsusc.2015.12.220
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 5
        StartPage: 370
    Subjects:
      – SubjectFull: Soil densification
        Type: general
      – SubjectFull: Gadolinium compounds
        Type: general
      – SubjectFull: Cerium oxides
        Type: general
      – SubjectFull: Solid oxide fuel cells
        Type: general
      – SubjectFull: Laser beams
        Type: general
    Titles:
      – TitleFull: Laser induced densification of cerium gadolinium oxide: Application to single-chamber solid oxide fuel cells.
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            NameFull: Mariño, Mariana
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            NameFull: Rieu, Mathilde
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            NameFull: Viricelle, Jean-Paul
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            NameFull: Garrelie, Florence
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          Dates:
            – D: 30
              M: 06
              Text: Jun2016
              Type: published
              Y: 2016
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              Value: 374
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            – TitleFull: Applied Surface Science
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