(US5747185-A)      The electrochemical converter comprises a fuel electrode, an electrolyte and oxidiser electrode layered structure, interconnectors between adjacent electrodes, and fuel and oxidiser supplies, the interconnector (contact surface), the fuel electrode and/or the oxidiser electrode being formed of a mixture containing at least chromium oxide plus one of beryllium, magnesium, calcium, strontium, barium and radium oxide.    Also claimed are: (i) four further electrochemical converters; and (ii) a solid oxide fuel cell system for converting a hydrocarbon fuel to electricity.    USE -   Used especially as a (planar) solid oxide fuel cell, or as a hydrocarbon fuel cell. (claimed).    ADVANTAGE -   The converter has low internal resistance and is capable of processing hydrocarbon fuel containing up to 50 ppm or more of sulphur material without internal damage or need for external processing to remove sulphur or need to vaporise and reform the fuel prior to its introduction.    (EP861506-A1)      The electrochemical converter comprises a fuel electrode, an electrolyte and oxidiser electrode layered structure, interconnectors between adjacent electrodes, and fuel and oxidiser supplies, the interconnector (contact surface), the fuel electrode and/or the oxidiser electrode being formed of a mixture containing at least chromium oxide plus one of beryllium, magnesium, calcium, strontium, barium and radium oxide.    Also claimed are: (i) four further electrochemical converters; and (ii) a solid oxide fuel cell system for converting a hydrocarbon fuel to electricity.    USE -   Used especially as a (planar) solid oxide fuel cell, or as a hydrocarbon fuel cell. (claimed).    ADVANTAGE -   The converter has low internal resistance and is capable of processing hydrocarbon fuel containing up to 50 ppm or more of sulphur material without internal damage or need for external processing to remove sulphur or need to vaporise and reform the fuel prior to its introduction.    (JP2000500606-W)      The electrochemical converter comprises a fuel electrode, an electrolyte and oxidiser electrode layered structure, interconnectors between adjacent electrodes, and fuel and oxidiser supplies, the interconnector (contact surface), the fuel electrode and/or the oxidiser electrode being formed of a mixture containing at least chromium oxide plus one of beryllium, magnesium, calcium, strontium, barium and radium oxide.    Also claimed are: (i) four further electrochemical converters; and (ii) a solid oxide fuel cell system for converting a hydrocarbon fuel to electricity.    USE -   Used especially as a (planar) solid oxide fuel cell, or as a hydrocarbon fuel cell. (claimed).    ADVANTAGE -   The converter has low internal resistance and is capable of processing hydrocarbon fuel containing up to 50 ppm or more of sulphur material without internal damage or need for external processing to remove sulphur or need to vaporise and reform the fuel prior to its introduction.    (TW385567-A)      The electrochemical converter comprises a fuel electrode, an electrolyte and oxidiser electrode layered structure, interconnectors between adjacent electrodes, and fuel and oxidiser supplies, the interconnector (contact surface), the fuel electrode and/or the oxidiser electrode being formed of a mixture containing at least chromium oxide plus one of beryllium, magnesium, calcium, strontium, barium and radium oxide.    Also claimed are: (i) four further electrochemical converters; and (ii) a solid oxide fuel cell system for converting a hydrocarbon fuel to electricity.    USE -   Used especially as a (planar) solid oxide fuel cell, or as a hydrocarbon fuel cell. (claimed).    ADVANTAGE -   The converter has low internal resistance and is capable of processing hydrocarbon fuel containing up to 50 ppm or more of sulphur material without internal damage or need for external processing to remove sulphur or need to vaporise and reform the fuel prior to its introduction.    (EP861506-B1)      The electrochemical converter comprises a fuel electrode, an electrolyte and oxidiser electrode layered structure, interconnectors between adjacent electrodes, and fuel and oxidiser supplies, the interconnector (contact surface), the fuel electrode and/or the oxidiser electrode being formed of a mixture containing at least chromium oxide plus one of beryllium, magnesium, calcium, strontium, barium and radium oxide.    Also claimed are: (i) four further electrochemical converters; and (ii) a solid oxide fuel cell system for converting a hydrocarbon fuel to electricity.    USE -   Used especially as a (planar) solid oxide fuel cell, or as a hydrocarbon fuel cell. (claimed).    ADVANTAGE -   The converter has low internal resistance and is capable of processing hydrocarbon fuel containing up to 50 ppm or more of sulphur material without internal damage or need for external processing to remove sulphur or need to vaporise and reform the fuel prior to its introduction.