WO2007087780-A2  CHEN F ET AL: "CHEMICAL STABILITY STUDY OF BACE0.9 ND0.1 O3-ALPHA HIGH-TEMPERATURE PROTON-CONDUCTING CERAMIC" JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, Bd. 7, Nr. 3, 1. Maerz 1997 (1997-03-01), Seiten 481-485, XP000693118 ISSN: 0959-9428;  HIRABAYASHI D ET AL: "Improvement of a reduction-resistant Ce0.8Sm0.2O1.9 electrolyte by optimizing a thin BaCe1-xSmxO3-alpha layer for intermediate-temperature SOFCs" SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, Bd. 176, Nr. 9-10, 15. Maerz 2005 (2005-03-15), Seiten 881-887, XP004749245 ISSN: 0167-2738;  S.V. BHIDE, A.V. VIRKAR: "Stability of BaCeO3-Based proton conductors in water-containing atmospheres" JOURNAL OF ELECTROCHEMICAL SOCIETY, Bd. 146, Nr. 6, 1999, Seiten 2038-2044, XP002434361;  SCHOBER ET AL: "Transformation of an oxygen ion conductor to a proton conductor by solid state reaction" SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, Bd. 176, Nr. 29-30, September 2005 (2005-09), Seiten 2275-2277, XP005053854 ISSN: 0167-2738WO2007087780-A3  SCHOBER ET AL: "Transformation of an oxygen ion conductor to a proton conductor by solid state reaction" SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, Bd. 176, Nr. 29-30, September 2005 (2005-09), Seiten 2275-2277, XP005053854 ISSN: 0167-2738;  CHEN F ET AL: "CHEMICAL STABILITY STUDY OF BACE0.9 ND0.1 O3-ALPHA HIGH-TEMPERATURE PROTON-CONDUCTING CERAMIC" JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, Bd. 7, Nr. 3, 1. Maerz 1997 (1997-03-01), Seiten 481-485, XP000693118 ISSN: 0959-9428;  S.V. BHIDE, A.V. VIRKAR: "Stability of BaCeO3-Based proton conductors in water-containing atmospheres" JOURNAL OF ELECTROCHEMICAL SOCIETY, Bd. 146, Nr. 6, 1999, Seiten 2038-2044, XP002434361;  HIRABAYASHI D ET AL: "Improvement of a reduction-resistant Ce0.8Sm0.2O1.9 electrolyte by optimizing a thin BaCe1-xSmxO3-alpha layer for intermediate-temperature SOFCs" SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, Bd. 176, Nr. 9-10, 15. Maerz 2005 (2005-03-15), Seiten 881-887, XP004749245 ISSN: 0167-2738;  SCHOBER ET AL: "Transformation of an oxygen ion conductor to a proton conductor by solid state reaction", SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, vol. 176, no. 29-30, September 2005 (2005-09-01), pages 2275 - 2277, XP005053854, ISSN: 0167-2738;  CHEN F ET AL: "CHEMICAL STABILITY STUDY OF BACE0.9 ND0.1 O3-ALPHA HIGH-TEMPERATURE PROTON-CONDUCTING CERAMIC", JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, vol. 7, no. 3, 1 March 1997 (1997-03-01), pages 481 - 485, XP000693118, ISSN: 0959-9428;  S.V. BHIDE, A.V. VIRKAR: "Stability of BaCeO3-Based proton conductors in water-containing atmospheres", JOURNAL OF ELECTROCHEMICAL SOCIETY, vol. 146, no. 6, 1999, pages 2038 - 2044, XP002434361;  HIRABAYASHI D ET AL: "Improvement of a reduction-resistant Ce0.8Sm0.2O1.9 electrolyte by optimizing a thin BaCe1-xSmxO3-alpha layer for intermediate-temperature SOFCs", SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, vol. 176, no. 9-10, 15 March 2005 (2005-03-15), pages 881 - 887, XP004749245, ISSN: 0167-2738EP1979078-B1  SCHOBER ET AL: "Transformation of an oxygen ion conductor to a proton conductor by solid state reaction" SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, Bd. 176, Nr. 29-30, September 2005 (2005-09), Seiten 2275-2277, XP005053854 ISSN: 0167-2738;  CHEN F ET AL: "CHEMICAL STABILITY STUDY OF BACE0.9 ND0.1 O3-ALPHA HIGH-TEMPERATURE PROTON-CONDUCTING CERAMIC" JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, Bd. 7, Nr. 3, 1. Maerz 1997 (1997-03-01), Seiten 481-485, XP000693118 ISSN: 0959-9428;  S.V. BHIDE, A.V. VIRKAR: "Stability of BaCeO3-Based proton conductors in water-containing atmospheres" JOURNAL OF ELECTROCHEMICAL SOCIETY, Bd. 146, Nr. 6, 1999, Seiten 2038-2044, XP002434361;  HIRABAYASHI D ET AL: "Improvement of a reduction-resistant Ce0.8Sm0.2O1.9 electrolyte by optimizing a thin BaCe1-xSmxO3-alpha layer for intermediate-temperature SOFCs" SOLID STATE IONICS, NORTH HOLLAND PUB. COMPANY. AMSTERDAM, NL, Bd. 176, Nr. 9-10, 15. Maerz 2005 (2005-03-15), Seiten 881-887, XP004749245 ISSN: 0167-2738