EP1146583-A  CHEMICAL ABSTRACTS, vol. 127, no. 22, 1 December 1997 (1997-12-01) Columbus, Ohio, US; abstract no. 309456, ZHENG, K. ET AL: "SOFC based on supported thick-film Ce(Gd)O2-x electrolytes" XP002154922 & STUD. SURF. SCI. CATAL. (1997), 107(NATURAL GAS CONVERSION IV), 127-132, 1997,;  DATABASE COMPENDEX [Online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; SAHIBZADA M ET AL: "Operation of solid oxide fuel cells at reduced temperatures" Database accession no. EIX99294681552 XP002154925 & FUEL;FUEL 1999 ELSEVIER SCIENCE LTD, ENGL, vol. 78, no. 6, 1999, pages 639-643,;  DATABASE INSPEC [Online] INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB; GODICKEMEIER M ET AL: "Current-voltage characteristics of fuel cells with ceria-based electrolytes" Database accession no. 5316099 XP002154923 & PROCEEDINGS OF THE FOURTH INTERNATIONAL SYMPOSIUM ON SOLID OXIDE FUEL CELLS (SOFC-IV), PROCEEDINGS OF FOURTH INTERNATIONAL SYMPOSIUM SOLID OXIDE FUEL CELLS, YOKOHAMA, JAPAN, 18-23 JUNE 1995, pages 1072-1081, 1995, Pennington, NJ, USA, Electrochem. Soc, USA;  DATABASE INSPEC [Online] INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB; VAN BERKEL F P F ET AL: "Electrolytes for low temperature solid oxide fuel cells" Database accession no. 5316098 XP002154924 & PROCEEDINGS OF THE FOURTH INTERNATIONAL SYMPOSIUM ON SOLID OXIDE FUEL CELLS (SOFC-IV), PROCEEDINGS OF FOURTH INTERNATIONAL SYMPOSIUM SOLID OXIDE FUEL CELLS, YOKOHAMA, JAPAN, 18-23 JUNE 1995, pages 1062-1071, 1995, Pennington, NJ, USA, Electrochem. Soc, USA;  HERLE J V ET AL: "Oxalate coprecipitation of doped ceria powder for tape casting" CERAMICS INTERNATIONAL,GB,ELSEVIER APPLIED SCIENCE PUBL, BARKING, ESSEX, vol. 24, no. 3, 1 May 1998 (1998-05-01), pages 229-241, XP004119026 ISSN: 0272-8842;  J VAN HERLE ET AL: "Low temperature fabrication of (Y, Gd;Sm) doped ceria electrolyte" SOLID STATE IONICS, vol. 86-88, 1996, pages 1255-1258, XP002154919 AMSTERDAM NL;  K. ZHENG ET AL: "Solid Oxide fuel cells on Ce(Gd)O2-x electrolytes" SOLID STATE IONICS, vol. 86-88, 1996, pages 1241-1244, XP002154920 AMSTERDAM NL;  KIRK T J ET AL: "A HYDROGEN SULFIDE/AIR SOLID OXIDE FUEL CELL" PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (IECEC),US,NEW YORK, IEEE, vol. CONF. 27, 3 August 1992 (1992-08-03), pages 3293-3298, XP000406778 ISBN: 0-7803-0693-7;  KUDO T ET AL: "OXYGEN ION CONDUCTION OF THE FLUORITE-TYPE CE1-XLNXO2-X/S (LN = LANTHANOID ELEMENT)" JOURNAL OF THE ELECTROCHEMICAL SOCIETY,US,ELECTROCHEMICAL SOCIETY. MANCHESTER, NEW HAMPSHIRE, vol. 122, no. 1, 1975, pages 142-147, XP002001200 ISSN: 0013-4651;  OVERS A ET AL: "Properties of the solid electrolyte gadolinia-doped ceria prepared by thermal decomposition of mixed cerium-gadolinium oxalate" JOURNAL OF THE AMERICAN CERAMIC SOCIETY,AMERICAN CERAMIC SOCIETY. COLUMBUS,US, vol. 65, no. 12, 1982, pages 606-609, XP002098819 ISSN: 0002-7820;  PARK IN-SIK ET AL: "Sintering and electrical properties of (CeO2)0.9(Gd2O3)0.1 powders prepared by glycine-nitrate process for solid oxide fuel cell applications" CHEMICAL ABSTRACTS + INDEXES,US,AMERICAN CHEMICAL SOCIETY. COLUMBUS, vol. 127 abstract 360909j, no. 26, 29 December 1997 (1997-12-29), XP000786404 ISSN: 0009-2258;  PATENT ABSTRACTS OF JAPAN vol. 018, no. 077 (E-1504), 8 February 1994 (1994-02-08) & JP 05 290860 A (MATSUSHITA ELECTRIC IND CO LTD), 5 November 1993 (1993-11-05);  R.T.DIRSTINE: "Ionic Conductivity of Calcia, Yttria, and Rare Earth-Doped Cerium Dioxide" JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 126, no. 2, February 1979 (1979-02), pages 264-269, XP002154918 MANCHESTER, NEW HAMPSHIRE US;  ROGER T DIRSTINE ET AL: "calcia-Doped Ceria Ceramic Tubes for Low Temperature Oxygen sensors" AMERICAN CERAMIC SOC. BULL., vol. 58, no. 8, August 1979 (1979-08), pages 778-783, XP002154921EP1146583-A1  CHEMICAL ABSTRACTS, vol. 127, no. 22, 1 December 1997 (1997-12-01) Columbus, Ohio, US; abstract no. 309456, ZHENG, K. ET AL: &quot;SOFC based on supported thick-film Ce(Gd)O2-x electrolytes&quot; XP002154922 &amp; STUD. SURF. SCI. CATAL. (1997), 107(NATURAL GAS CONVERSION IV), 127-132, 1997,;  DATABASE COMPENDEX [Online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; SAHIBZADA M ET AL: &quot;Operation of solid oxide fuel cells at reduced temperatures&quot; Database accession no. EIX99294681552 XP002154925 &amp; FUEL;FUEL 1999 ELSEVIER SCIENCE LTD, ENGL, vol. 78, no. 6, 1999, pages 639-643,;  DATABASE INSPEC [Online] INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB; GODICKEMEIER M ET AL: &quot;Current-voltage characteristics of fuel cells with ceria-based electrolytes&quot; Database accession no. 5316099 XP002154923 &amp; PROCEEDINGS OF THE FOURTH INTERNATIONAL SYMPOSIUM ON SOLID OXIDE FUEL CELLS (SOFC-IV), PROCEEDINGS OF FOURTH INTERNATIONAL SYMPOSIUM SOLID OXIDE FUEL CELLS, YOKOHAMA, JAPAN, 18-23 JUNE 1995, pages 1072-1081, 1995, Pennington, NJ, USA, Electrochem. Soc, USA;  DATABASE INSPEC [Online] INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB; VAN BERKEL F P F ET AL: &quot;Electrolytes for low temperature solid oxide fuel cells&quot; Database accession no. 5316098 XP002154924 &amp; PROCEEDINGS OF THE FOURTH INTERNATIONAL SYMPOSIUM ON SOLID OXIDE FUEL CELLS (SOFC-IV), PROCEEDINGS OF FOURTH INTERNATIONAL SYMPOSIUM SOLID OXIDE FUEL CELLS, YOKOHAMA, JAPAN, 18-23 JUNE 1995, pages 1062-1071, 1995, Pennington, NJ, USA, Electrochem. Soc, USA;  HERLE J V ET AL: &quot;Oxalate coprecipitation of doped ceria powder for tape casting&quot; CERAMICS INTERNATIONAL,GB,ELSEVIER APPLIED SCIENCE PUBL, BARKING, ESSEX, vol. 24, no. 3, 1 May 1998 (1998-05-01), pages 229-241, XP004119026 ISSN: 0272-8842;  J VAN HERLE ET AL: &quot;Low temperature fabrication of (Y, Gd;Sm) doped ceria electrolyte&quot; SOLID STATE IONICS, vol. 86-88, 1996, pages 1255-1258, XP002154919 AMSTERDAM NL;  K. ZHENG ET AL: &quot;Solid Oxide fuel cells on Ce(Gd)O2-x electrolytes&quot; SOLID STATE IONICS, vol. 86-88, 1996, pages 1241-1244, XP002154920 AMSTERDAM NL;  KIRK T J ET AL: &quot;A HYDROGEN SULFIDE/AIR SOLID OXIDE FUEL CELL&quot; PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (IECEC),US,NEW YORK, IEEE, vol. CONF. 27, 3 August 1992 (1992-08-03), pages 3293-3298, XP000406778 ISBN: 0-7803-0693-7;  KIRK T J ET AL: &quot;A HYDROGEN SULFIDEAIR SOLID OXIDE FUEL CELL&quot; PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (IECEC),US,NEW YORK, IEEE, vol. CONF. 27, 3 August 1992 (1992-08-03), pages 3293-3298, XP000406778 ISBN: 0-7803-0693-7;  KUDO T ET AL: &quot;OXYGEN ION CONDUCTION OF THE FLUORITE-TYPE CE1-XLNXO2-X/S (LN = LANTHANOID ELEMENT)&quot; JOURNAL OF THE ELECTROCHEMICAL SOCIETY,US,ELECTROCHEMICAL SOCIETY. MANCHESTER, NEW HAMPSHIRE, vol. 122, no. 1, 1975, pages 142-147, XP002001200 ISSN: 0013-4651;  KUDO T ET AL: &quot;OXYGEN ION CONDUCTION OF THE FLUORITE-TYPE CE1-XLNXO2-XS (LN = LANTHANOID ELEMENT)&quot; JOURNAL OF THE ELECTROCHEMICAL SOCIETY,US,ELECTROCHEMICAL SOCIETY. MANCHESTER, NEW HAMPSHIRE, vol. 122, no. 1, 1975, pages 142-147, XP002001200 ISSN: 0013-4651;  PATENT ABSTRACTS OF JAPAN vol. 018, no. 077 (E-1504), 8 February 1994 (1994-02-08) &amp; JP 05 290860 A (MATSUSHITA ELECTRIC IND CO LTD), 5 November 1993 (1993-11-05);  ROGER T DIRSTINE ET AL: &quot;calcia-Doped Ceria Ceramic Tubes for Low Temperature Oxygen sensors&quot; AMERICAN CERAMIC SOC. BULL., vol. 58, no. 8, August 1979 (1979-08), pages 778-783, XP002154921;  OVERS A ET AL: &quot;Properties of the solid electrolyte gadolinia-doped ceria prepared by thermal decomposition of mixed cerium-gadolinium oxalate&quot; JOURNAL OF THE AMERICAN CERAMIC SOCIETY,AMERICAN CERAMIC SOCIETY. COLUMBUS,US, vol. 65, no. 12, 1982, pages 606-609, XP002098819 ISSN: 0002-7820;  PARK IN-SIK ET AL: &quot;Sintering and electrical properties of (CeO2)0.9(Gd2O3)0.1 powders prepared by glycine-nitrate process for solid oxide fuel cell applications&quot; CHEMICAL ABSTRACTS + INDEXES,US,AMERICAN CHEMICAL SOCIETY. COLUMBUS, vol. 127 abstract 360909j, no. 26, 29 December 1997 (1997-12-29), XP000786404 ISSN: 0009-2258;  R.T.DIRSTINE: &quot;Ionic Conductivity of Calcia, Yttria, and Rare Earth-Doped Cerium Dioxide&quot; JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 126, no. 2, February 1979 (1979-02), pages 264-269, XP002154918 MANCHESTER, NEW HAMPSHIRE US