固体高分子形水電解で発生する酸素気泡の可視光カメラによる挙動観察  [in Japanese] Behavior observation of oxygen bubbles generated in PEM water electrolysis using a visible light camera  [in Japanese]

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Abstract

In order to construct a hydrogen energy system, water electrolysis technology for converting renewable energy into hydrogen has recently attracted attention. In particular, a proton exchange membrane (PEM) water electrolysis can be operated at high current density and can produce high purity hydrogen compared to other water electrolysis techniques. However, increasing th0e efficiency is indispensable for putting PEM water electrolysis into practical use in the future. One of the serious problems is that the staying of generated oxygen bubbles in the reaction site inhibits the water supply and significantly reduces the reaction efficiency. However, the mechanism of generation, growth and detachment of oxygen bubbles on the reaction site in the PEM electrolyzer has not been clarified. Therefore, in this research, in order to understand the two-phase flow phenomenon of this oxygen bubble, the behavior of the bubbles was observed using a visible light high-speed camera and a visualized electrolysis cell.

Journal

  • The Proceedings of the National Symposium on Power and Energy Systems

    The Proceedings of the National Symposium on Power and Energy Systems 2019.24(0), C113, 2019

    The Japan Society of Mechanical Engineers

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