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金属カチオンによる固体高分子形水電解セルの性能劣化 Influence of Metal Cations on Cell Performance Degradation of Polymer Electrolyte Membrane Water Electrolyzer 吉村, 玲冶 ヨシムラ, リョウヤ Yoshimura, Ryoya 00377441 西岡, 賢祐 ニシオカ, ケンスケ Nishioka , Kensuke 西岡 ニシオカ Nishioka 賢祐 ケンスケ Kensuke 宮崎大学 University of Miyazaki 90264366 鈴木, 祥広 スズキ, ヨシヒロ Suzuki, Yoshihiro 鈴木 スズキ Suzuki 祥広 ヨシヒロ Yoshihiro 宮崎大学 University of Miyazaki PEM water electrolysis Metal cation Contamination Degradation Hydrogen permeation We investigated the performance of a polymer electrolyte membrane (PEM) water electrolyzer on metal cations contamination by feed water. Artificial river water, called Soft water, was used to analyze the effect of metal cations on the PEM water electrolyzer. The results showed that the operating voltage was increased drastically and the amount of hydrogen which is permeated from the cathode to the anode through the membrane was also increased. The performance degradation is induced with increasing Mg2+ and Ca2+ concentrations adsorbed on the membrane. Therefore, divalent cations have a stronger affinity than monovalent cations to degrade the PEM water electrolyzer. 宮崎大学工学部 Faculty of Engineering, University of Miyazaki 2022-11-30 jpn departmental bulletin paper VoR http://hdl.handle.net/10458/0002000025 https://miyazaki-u.repo.nii.ac.jp/records/2000025 https://www.miyazaki-.ac.jp/tech/research/memoirs/ 宮崎大学工学部 AA00732558 05404924 宮崎大学工学部紀要 Memoirs of Faculty of Engineering, University of Miyazaki 51 177 180 https://miyazaki-u.repo.nii.ac.jp/record/2000025/files/No51PP177-180.pdf application/pdf 2022-12-07