コラーゲン薄膜を用いたダイレクトエタノール燃料電池

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タイトル別名
  • Direct-ethanol Fuel Cell Based on Collagen Film
  • コラーゲン ハクマク オ モチイタ ダイレクトエタノール ネンリョウ デンチ

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抄録

Fuel cells attract attention as clean next-generation energy. Direct-ethanol fuel cell (DEFC), which is one of the fuel cells, is expected to be used as portable devices because DEFC is superior in fuel safety and portability to the hydrogen fuel cell. On the other hand, a significant decrease in power density by fuel crossover has become a major issue in practical use. In this study, we have tried to create a bio-direct ethanol fuel cell (bio-DEFC) using the collagen electrolyte, which is expected to have ethanol impermeability. It was found that the ethanol crossover in the collagen film is extremely low. This result indicates that the collagen electrolyte has excellent properties as a DEFC electrolyte in the viewpoint of the ethanol impermeability. Moreover, we have fabricated the bio-DEFC using the collagen electrolyte and investigated the possibility of its power generation. As a result, we can observe the operation of the digital clock by using three cells of bio-DEFC. This result indicates that the power generation of bio-DEFC is actually possible. Furthermore, it was found that the power density of bio-DEFC strongly depends on the concentration of ethanol and that a high power density can be obtained at an ethanol concentration of 5.09 M. In addition, the condition for the optimal ethanol concentration yielding the high-power density has been also discussed.

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