(JP10233222-A)      A matrix for carrying a carbonate electrolyte comprising a support material and an additive having a low melting point and high thermal coefficient of expansion, the additive comprising 3 - 45 vol.% of the matrix and being formed from raw particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50.Also claimed are (1) A fuel cell comprising: an anode section; a cathode section; and the above electrolyte matrix sandwiched between the anode and cathode sections. (2) Production of a matrix for carrying a carbonate electrolyte, comprising: mixing a support material and an additive having low melting point and high thermal coefficient of expansion formed of particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50 including high energy intensive milling; and forming the mixture into a coherent member. (3) A matrix for carrying a carbonate electrolyte comprising a support material and an additive including an alkaline earth containing material, the additive having been included in the matrix during formation of the matrix. (4) A fuel cell comprising: an anode section; a cathode section; and electrolyte matrix (3) sandwiched between the anode and cathode sections. (5) Production of a matrix for carrying a carbonate electrolyte, comprising: forming a support material and an additive into a matrix including high energy intensive milling of the support material and additive.    ADVANTAGE -   The electrolyte matrix has increased strength, and can have increased amounts and improved uniformity of alkaline earth additives which suppress dissolution of NiO in the cell cathodes.    (US5869203-A)      A matrix for carrying a carbonate electrolyte comprising a support material and an additive having a low melting point and high thermal coefficient of expansion, the additive comprising 3 - 45 vol.% of the matrix and being formed from raw particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50.Also claimed are (1) A fuel cell comprising: an anode section; a cathode section; and the above electrolyte matrix sandwiched between the anode and cathode sections. (2) Production of a matrix for carrying a carbonate electrolyte, comprising: mixing a support material and an additive having low melting point and high thermal coefficient of expansion formed of particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50 including high energy intensive milling; and forming the mixture into a coherent member. (3) A matrix for carrying a carbonate electrolyte comprising a support material and an additive including an alkaline earth containing material, the additive having been included in the matrix during formation of the matrix. (4) A fuel cell comprising: an anode section; a cathode section; and electrolyte matrix (3) sandwiched between the anode and cathode sections. (5) Production of a matrix for carrying a carbonate electrolyte, comprising: forming a support material and an additive into a matrix including high energy intensive milling of the support material and additive.    ADVANTAGE -   The electrolyte matrix has increased strength, and can have increased amounts and improved uniformity of alkaline earth additives which suppress dissolution of NiO in the cell cathodes.    (CN1240054-A)      A matrix for carrying a carbonate electrolyte comprising a support material and an additive having a low melting point and high thermal coefficient of expansion, the additive comprising 3 - 45 vol.% of the matrix and being formed from raw particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50.Also claimed are (1) A fuel cell comprising: an anode section; a cathode section; and the above electrolyte matrix sandwiched between the anode and cathode sections. (2) Production of a matrix for carrying a carbonate electrolyte, comprising: mixing a support material and an additive having low melting point and high thermal coefficient of expansion formed of particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50 including high energy intensive milling; and forming the mixture into a coherent member. (3) A matrix for carrying a carbonate electrolyte comprising a support material and an additive including an alkaline earth containing material, the additive having been included in the matrix during formation of the matrix. (4) A fuel cell comprising: an anode section; a cathode section; and electrolyte matrix (3) sandwiched between the anode and cathode sections. (5) Production of a matrix for carrying a carbonate electrolyte, comprising: forming a support material and an additive into a matrix including high energy intensive milling of the support material and additive.    ADVANTAGE -   The electrolyte matrix has increased strength, and can have increased amounts and improved uniformity of alkaline earth additives which suppress dissolution of NiO in the cell cathodes.    (EP1016155-A1)      A matrix for carrying a carbonate electrolyte comprising a support material and an additive having a low melting point and high thermal coefficient of expansion, the additive comprising 3 - 45 vol.% of the matrix and being formed from raw particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50.Also claimed are (1) A fuel cell comprising: an anode section; a cathode section; and the above electrolyte matrix sandwiched between the anode and cathode sections. (2) Production of a matrix for carrying a carbonate electrolyte, comprising: mixing a support material and an additive having low melting point and high thermal coefficient of expansion formed of particles of diameter 0.1 - 20 micron and aspect ratio 1 - 50 including high energy intensive milling; and forming the mixture into a coherent member. (3) A matrix for carrying a carbonate electrolyte comprising a support material and an additive including an alkaline earth containing material, the additive having been included in the matrix during formation of the matrix. (4) A fuel cell comprising: an anode section; a cathode section; and electrolyte matrix (3) sandwiched between the anode and cathode sections. (5) Production of a matrix for carrying a carbonate electrolyte, comprising: forming a support material and an additive into a matrix including high energy intensive milling of the support material and additive.    ADVANTAGE -   The electrolyte matrix has increased strength, and can have increased amounts and improved uniformity of alkaline earth additives which suppress dissolution of NiO in the cell cathodes.