No.11（2016）19.Development of a metal current collector for SOFC using metal fibers

Kengo Kubotera，Eiichi Mine，Akihisa Higuchi，Etsuko Yamamoto，Hideki Okamura

  Metal current collectors such as porous metal, metallic felt and metallic knit etc. are proposed for solid oxide fuel cells (SOFC) because of their high operating temperature (ca. 800 °C). Current collectors for SOFC are required to have a cushioning property towards adjacent parts in the cell stack. In this study, we produced a multi-layered woven fabric (MLWF) made of stainless steel as a high cushioning current collector. The structure of the twisted yarn, tension control when warped, and the supply method of weft yarn during weaving had a great impact on the ease of producing the MLWF. The cushioning property of the MLWF was higher than that of porous metal and metallic knit. Moreover, the area surface resistance of MLWF was lower than that of metallic felt and knit at 800 °C. These results indicate the possibility of MLWF being used as a good substitute material for the current collector of a SOFC.

Keywords
Multi-layered woven fabric, Current collector

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