METHOD FOR PRODUCING CERIUM-BASED COMPOSITE OXIDE, SOLID OXIDE FUEL CELL, AND FUEL CELL SYSTEM

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United States of America Patent

SERIAL NO

14009216

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Abstract

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On the other hand, the possibility of estimating the dopant ratio of a metal element to each ceria crystalline particle using integral-width or half-width obtained by XRD was considered as follows: an XRD peak is shifted depending on the dopant ratio of La to ceria; when La increases, an XRD peak is shifted to a lower angle; in XRD performed on a raw material obtained by mixing ceria crystalline particles having different dopant ratio, peaks corresponding to the respective dopant ratio exist close to each other; as a result, a peak width is widened; accordingly, the dopant ratio of a metal element to each ceria crystalline particles are supposed to vary when integral-width and half-width obtained by XRD are large. Thus, it was revealed for the first time that integral-width and half-width obtained by XRD indicate variations in dopant ratio. It should be noted that from the direct proportional relationship between the dopant ratio x and the integral-width for dopant ratio ranging from 0.35 to 0.45, integral-widths obtained by XRD are derived to be 0.10 to 0.30 for dopant ratio ranging from 0.35 to 0.45, and half-widths are derived to be 0.10 to 0.30 similarly.

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TOTO LTD1-1 NAKASHIMA 2-CHOME KOKURAKITA-KU KITAKYUSHU-SHI FUKUOKA 8028601

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ando, Shigeru Odawara-shi, JP 72 471
Ishiguro, Akira Chigasaki-shi, JP 18 25
Kakinuma, Yasuo Chigasaki-shi, JP 19 9
Kawakami, Akira Kamakura-shi, JP 74 648
Momiyama, Yutaka Yokohama-shi, JP 31 12
Shimazu, Megumi Chigasaki-shi, JP 14 15

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