Carbonate coprecipitation synthesis of Sr- and Mg-doped LaGaO3

被引：20

作者：

Cristiani, Cinzia ^{[1
]}

Zampori, Luca ^{[1
]}

Latorrata, Saverio ^{[1
]}

Pelosato, Renato ^{[1
]}

Dotelli, Giovanni ^{[1
]}

Ruffo, Riccardo ^{[2
]}

机构：

[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20133 Milan, Italy

[2] Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 21期

关键词：

Coprecipitation synthesis; LSGM; SOFC; Phase composition; Electrical conductivity; OXIDE-ION CONDUCTOR; ELECTRICAL-PROPERTIES; LANTHANUM GALLATE; FUEL-CELLS; PEROVSKITE; ELECTROLYTE; PERFORMANCE;

D O I：

10.1016/j.matlet.2009.06.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A carbonate coprecipitation synthesis, simple and easily scalable to industrial level, has been successfully applied to produce Sr- and Mg-doped LaGaO3. The thermal evolution shows that the main perovskite phase crystallizes already at 1000 degrees C. Samples sintered at 1400 degrees C for 10 h have a relative density of 93% and an electrical conductivity of 7.7 . 10(-2) S cm(-1) at 800 degrees C, similar to the one reported for solid state synthesis. The presence of small amounts of secondary phases (about 17%) such as LaSrGaO4 and LaSrGa3O7 does not seem to deeply affect the electrical properties of the final material. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1892 / 1894

页数：3

共 16 条

[1] Sr- and Mg-doped LaGaO3 powder synthesis by carbonate coprecipitation [J].

Chae, Nam Soo ;

Park, Kil Soon ;

Yoon, Young Soo ;

Yoo, In Sang ;

Kim, Jong Sung ;

Yoon, Hyon Hee .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2008, 313 :154-157

[2] Structural studies of Sr- and Mg-doped LaGaO3 [J].

Datta, Pradyot ;

Majewski, Peter ;

Aldinger, Fritz .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 438 (1-2) :232-237

[3] Electrical behaviour of LSGM-LSM composite cathode materials [J].

Dotelli, Giovanni ;

Mari, C. M. ;

Ruffo, R. ;

Pelosato, R. ;

Natali Sora, I. .

SOLID STATE IONICS, 2006, 177 (19-25) :1991-1996

[4]

FENG M, 1994, EUR J SOL STATE INOR, V31, P663

[5] Performance of intermediate temperature solid oxide fuel cells with La(Sr)Ga(Mg)O3 electrolyte film [J].

Fukui, T ;

Ohara, S ;

Murata, K ;

Yoshida, H ;

Miura, K ;

Inagaki, T .

JOURNAL OF POWER SOURCES, 2002, 106 (1-2) :142-145

[6] PHASE-COMPOSITION AND MECHANISM OF FORMATION OF BA-BETA-ALUMINA-TYPE SYSTEMS FOR CATALYTIC COMBUSTION PREPARED BY PRECIPITATION [J].

GROPPI, G ;

CRISTIANI, C ;

FORZATTI, P ;

BELLOTTO, M .

JOURNAL OF MATERIALS SCIENCE, 1994, 29 (13) :3441-3450

[7] Thermal evolution crystal structure and cation valence of Mn in substituted Ba-β-Al2O3 prepared via coprecipitation in aqueous medium [J].

Groppi, G ;

Bellotto, M ;

Cristiani, C ;

Forzatti, P ;

Villa, PL .

JOURNAL OF MATERIALS SCIENCE, 1999, 34 (11) :2609-2620

[8]

Huang KQ, 1998, J AM CERAM SOC, V81, P2581, DOI 10.1111/j.1151-2916.1998.tb02664.x

[9]

Huang KQ, 1998, J AM CERAM SOC, V81, P2565, DOI 10.1111/j.1151-2916.1998.tb02662.x

[10] Sol-gel synthesis of a new oxide-ion conductor Sr- and Mg-doped LaGaO3 perovskite [J].

Huang, KQ ;

Feng, M ;

Goodenough, JB .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1996, 79 (04) :1100-1104

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