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Title: Application of the new oxide ionic conductor, LaGaO{sub 3}, to the solid electrolyte of fuel cells

Abstract

It was found that the perovskite type oxide La{sub 1{minus}x}Sr{sub x}Ga{sub 0.8}Mg{sub 0.2}O{sub 3}, exhibits the high oxide ion conductivity over a wide oxygen partial pressure and temperature range. The electrical power generation characteristics of SOFCs where LaGaO{sub 3}-based perovskite type oxide was applied as the electrolyte, were studied. It became evident that the composition of La{sub 0.9}Sr{sub 0.1}Ga{sub 0.8}Mg{sub 0.2}O{sub 3} was the most suitable for the electrolyte of the SOFC, among the LaGaO{sub 3}-based perovskite oxides, and furthermore, Ni, and La{sub 0.9}Sr{sub 0.1}CoO{sub 3} were suitable as the anode and cathode, respectively. The maximum power density of the SOFC, which consisted of these materials, attained a value as high as 0.93 W/cm{sup 2} at 1,273 K, though the thickness of electrolyte was as large as 0.5mm. Moreover, the power density of cells was still attained at a value as high as 0.17 W/cm{sup 2} at 973 K.

Authors:
; ; ;  [1]
  1. Oita Univ. (Japan)
Publication Date:
OSTI Identifier:
242488
Report Number(s):
CONF-950683-
ISBN 1-56677-095-5; TRN: IM9626%%316
Resource Type:
Book
Resource Relation:
Conference: 4. international symposium on solid oxide fuel cells, Yokohama (Japan), 18-23 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the fourth international symposium on solid oxide fuel cells (SOFC-IV). Proceedings Volume 95-1; Dokiya, M. [ed.] [National Inst. of Materials and Chemical Research, Tsukuba, Ibaraki (Japan)]; Yamamoto, O. [ed.] [Mie Univ., Tsu, Mie (Japan)]; Tagawa, H. [ed.] [Yokohama National Univ., Yokohama, Kanagawa (Japan)]; Singhal, S.C. [ed.] [Westinghouse Electric Corp., Pittsburgh, PA (United States)]; PB: 1188 p.
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; SOLID ELECTROLYTE FUEL CELLS; SOLID ELECTROLYTES; LANTHANUM OXIDES; IONIC CONDUCTIVITY; GALLIUM OXIDES; STRONTIUM OXIDES; MAGNESIUM OXIDES; PERFORMANCE; MATERIALS TESTING; EXPERIMENTAL DATA

Citation Formats

Ishihara, Tatsumi, Minami, Hiroaki, Matsuda, Hideaki, and Takita, Yusaku. Application of the new oxide ionic conductor, LaGaO{sub 3}, to the solid electrolyte of fuel cells. United States: N. p., 1995. Web.
Ishihara, Tatsumi, Minami, Hiroaki, Matsuda, Hideaki, & Takita, Yusaku. Application of the new oxide ionic conductor, LaGaO{sub 3}, to the solid electrolyte of fuel cells. United States.
Ishihara, Tatsumi, Minami, Hiroaki, Matsuda, Hideaki, and Takita, Yusaku. Sun . "Application of the new oxide ionic conductor, LaGaO{sub 3}, to the solid electrolyte of fuel cells". United States.
@article{osti_242488,
title = {Application of the new oxide ionic conductor, LaGaO{sub 3}, to the solid electrolyte of fuel cells},
author = {Ishihara, Tatsumi and Minami, Hiroaki and Matsuda, Hideaki and Takita, Yusaku},
abstractNote = {It was found that the perovskite type oxide La{sub 1{minus}x}Sr{sub x}Ga{sub 0.8}Mg{sub 0.2}O{sub 3}, exhibits the high oxide ion conductivity over a wide oxygen partial pressure and temperature range. The electrical power generation characteristics of SOFCs where LaGaO{sub 3}-based perovskite type oxide was applied as the electrolyte, were studied. It became evident that the composition of La{sub 0.9}Sr{sub 0.1}Ga{sub 0.8}Mg{sub 0.2}O{sub 3} was the most suitable for the electrolyte of the SOFC, among the LaGaO{sub 3}-based perovskite oxides, and furthermore, Ni, and La{sub 0.9}Sr{sub 0.1}CoO{sub 3} were suitable as the anode and cathode, respectively. The maximum power density of the SOFC, which consisted of these materials, attained a value as high as 0.93 W/cm{sup 2} at 1,273 K, though the thickness of electrolyte was as large as 0.5mm. Moreover, the power density of cells was still attained at a value as high as 0.17 W/cm{sup 2} at 973 K.},
doi = {},
url = {https://www.osti.gov/biblio/242488}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}

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