1999
DOI: 10.1016/s0378-7753(99)00293-1
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Ni-SDC cermet anode for medium-temperature solid oxide fuel cell with lanthanum gallate electrolyte

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Cited by 95 publications
(34 citation statements)
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“…Among these reports, [3][4][5][6][7][8][9][10][11][12] single ceramic fuel cell tests using a thick-film ͑Ͼ500 m͒ LSGM as the electrolyte have demonstrated a most encouraging cell performance at an operating temperature T op Ͻ800°C. 5,6 The major contributions to the high power density exhibited by the LSGM-based fuel cells are attributed to the improvement of the electrolyte conductivity and, more important, its exceptional structural and chemical compatibility with perovskite cathode materials that are mixed electronic and oxide-ion conductors ͑MEOCs͒.…”
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confidence: 99%
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“…Among these reports, [3][4][5][6][7][8][9][10][11][12] single ceramic fuel cell tests using a thick-film ͑Ͼ500 m͒ LSGM as the electrolyte have demonstrated a most encouraging cell performance at an operating temperature T op Ͻ800°C. 5,6 The major contributions to the high power density exhibited by the LSGM-based fuel cells are attributed to the improvement of the electrolyte conductivity and, more important, its exceptional structural and chemical compatibility with perovskite cathode materials that are mixed electronic and oxide-ion conductors ͑MEOCs͒.…”
mentioning
confidence: 99%
“…It was found in a later study that the LSGM reacts readily with the NiO during the anode preparation and cell operation. 4,5 To eliminate this reaction, we introduced a Ni-free interlayer SDC20 between LSGM and anode SDC20 ϩ NiO, and the power density of the cell was further increased from 450 to 550 mW/cm 2 at 800°C with an extended stable power output over 1500 h. 5 Although the performance of LSGM-based fuel cells has been improving progressively in the past 5 years in our laboratory [3][4][5][6][7] as well as in other groups, [8][9][10][11][12] a thorough understanding of the chemical reactions between LSGM and a Ni-containing CeO 2 -based anode is still lacking. Recently, Hrovat et al [16][17][18][19][20] systematically studied phase relationships between La 2 O 3 , Ga 2 O 3 , CeO 2 , and various transition-metal oxides.…”
mentioning
confidence: 99%
“…En este contexto, existen otros materiales alternativos al electrolito YSZ, tales como el GDC (cerio dopado con gadolinio) y el LSGM (galato de lantano dopado con estroncio y magnesio), los cuales se han convertido en los últimos años en serias alternativas, debido a que presentan unas conductividades iónicas similares a la del YSZ a temperaturas más bajas de aproximadamente 200°C. En concreto, varios estudios han mostrado que el compósito LSGM posee una conductividad electrónica más alta que el YSZ 53,54 aunque se ha hecho notar la conductividad iónica equivalente de YSZ a 1000 ºC 55 . Por otra parte, se menciona que el electrolito LSGM combinado con al ánodo Ni/SDC tiene más probabilidades de éxito a una temperatura entre 700-800 ºC 56 .…”
Section: Celda De Combustible De Carbonatos Fundidos (Molten Carbonatunclassified
“…No entanto, apesar de ser amplamente utilizado, o ânodo contendo Ni é responsável por alguns problemas de incompatibilidade com eletrólitos que apresentam lantânio em sua composição [11]. Outro problema está relacionado à atividade eletrocatalítica do Ni na oxidação eletroquímica do hidrogênio, que pode ser prejudicada quando gás natural ou metano é utilizado diretamente como combustível, devido à deposição de carbono sobre as partículas de Ni.…”
Section: Principais Materiais Usados Na Constituição Do âNodounclassified