解説
塩基性水系電解質における炭素材料の電気化学挙動
2018 年 2018 巻 283 号 p. 118-123
詳細
2018 年 2018 巻 283 号 p. 118-123
The electrochemical behavior of some carbonaceous materials in alkaline aqueous solutions are discussed. Carbon black, which is mixed as an electro-conductive additive, has a catalytic activity for the oxygen reduction reaction (ORR) in alkaline solutions. Following the initial 2-electron reduction on carbon, metal-oxide catalysts decompose the intermediate HO2− to form OH− and O2. Graphite forms graphite intercalation compounds (GICs) containing OH− in alkaline solutions with a high ionic strength, while the formation of GICs was not observed in the solutions with a low ionic strength.
