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Flame Spray Synthesis of BaZr0.8Y0.2O3- δ Electrolyte Nanopowders for Intermediate Temperature Proton Conducting Fuel Cells.

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Title: Flame Spray Synthesis of BaZr0.8Y0.2O3- δ Electrolyte Nanopowders for Intermediate Temperature Proton Conducting Fuel Cells.
Authors: Bozza, F.1, Arroyo, Y.2, Graule, T.1
Source: Fuel Cells. Aug2015, Vol. 15 Issue 4, p588-594. 7p.
Subjects: Flame spraying, Proton exchange membrane fuel cells, Electrolytes, Fuel quality, Electric power production from chemical action, Electrochemistry
Abstract: Flame Spray Synthesis (FSS) technique has been used for the preparation of BaZr0.8Y0.2O3- δ (BZY20) nanoprecursors. The nanoprecursors were composed of a perovskite phase mixed with doped Zirconia and barium nitrate. Pure phase powder could be obtained after calcining the precursors at 1,200 °C. Both nanoprecursors and pure phase powder were then sintered at 1,600 °C to obtain dense specimen. AC impedance spectroscopy performed on the sintered samples allowed correlation of the electrical properties of the samples to their microstructures. The sintered nanoprecursors compared with the sintered pure phase powders showed enhanced grain growth associated with higher grain boundary conductivity. The influence of the reactive sintering on the enhanced grain growth and electrical properties in the nanoprecursors is discussed. The high total proton conductivity measured (7.7·10−3 S cm−1 at 450 °C) promotes FSS as an effective powder synthesis method for the preparation of BZY20 electrolyte material for proton conducting fuel cells operating in the intermediate temperature range. [ABSTRACT FROM AUTHOR]
Copyright of Fuel Cells is the property of Wiley-Blackwell 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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  Data: <searchLink fieldCode="JN" term="%22Fuel+Cells%22">Fuel Cells</searchLink>. Aug2015, Vol. 15 Issue 4, p588-594. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Flame+spraying%22">Flame spraying</searchLink><br /><searchLink fieldCode="DE" term="%22Proton+exchange+membrane+fuel+cells%22">Proton exchange membrane fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Electrolytes%22">Electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Fuel+quality%22">Fuel quality</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+power+production+from+chemical+action%22">Electric power production from chemical action</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemistry%22">Electrochemistry</searchLink>
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  Data: Flame Spray Synthesis (FSS) technique has been used for the preparation of BaZr0.8Y0.2O3- δ (BZY20) nanoprecursors. The nanoprecursors were composed of a perovskite phase mixed with doped Zirconia and barium nitrate. Pure phase powder could be obtained after calcining the precursors at 1,200 °C. Both nanoprecursors and pure phase powder were then sintered at 1,600 °C to obtain dense specimen. AC impedance spectroscopy performed on the sintered samples allowed correlation of the electrical properties of the samples to their microstructures. The sintered nanoprecursors compared with the sintered pure phase powders showed enhanced grain growth associated with higher grain boundary conductivity. The influence of the reactive sintering on the enhanced grain growth and electrical properties in the nanoprecursors is discussed. The high total proton conductivity measured (7.7·10−3 S cm−1 at 450 °C) promotes FSS as an effective powder synthesis method for the preparation of BZY20 electrolyte material for proton conducting fuel cells operating in the intermediate temperature range. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Fuel Cells is the property of Wiley-Blackwell 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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        Value: 10.1002/fuce.201400179
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      – Code: eng
        Text: English
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        PageCount: 7
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      – SubjectFull: Flame spraying
        Type: general
      – SubjectFull: Proton exchange membrane fuel cells
        Type: general
      – SubjectFull: Electrolytes
        Type: general
      – SubjectFull: Fuel quality
        Type: general
      – SubjectFull: Electric power production from chemical action
        Type: general
      – SubjectFull: Electrochemistry
        Type: general
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      – TitleFull: Flame Spray Synthesis of BaZr0.8Y0.2O3- δ Electrolyte Nanopowders for Intermediate Temperature Proton Conducting Fuel Cells.
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            NameFull: Bozza, F.
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            NameFull: Arroyo, Y.
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            NameFull: Graule, T.
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            – D: 01
              M: 08
              Text: Aug2015
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