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Title :電気化学インピーダンス測定法を用いたスルファミン酸ニッケル電解液中における多結晶ニッケル表面の電気化学反応に関する研究
Title alternative :A study of Electrochemical Reactions on Poly-Crystalline Nickel Surfaces in Nickel Sulfamate Electrolyte by Electrochemical Impedance Spectroscopy
Authors :濱口, 邦彦
押川, 渡
斎藤, 正敏
Authors alternative :Hamaguchi, Kunihiko
Oshikawa, Wataru
Saitou, Masatoshi
Issue Date :25-Feb-2004
Abstract :Electrochemical impedance spectroscopy measurements under a smal alternating current were performed to investigate the electrochemical reactions on poly-crystalline nickel surfaces in nickel sulfamate electrolyte. The Nyquist diagrams exhibit the absence of inductive loops for the frequency range from 50MHz to 100kHz. A condition for the existence of inductive loops derived in this study suggests that the electrocrystallization of Ni^<2+> ions may take place in the slow reaction step Ni^<2+>+e^-→Ni^+_<ads> and fast reaction step Ni^+_<ads>+e^-→Ni. In addition, the reaction impedances are found to have two exponents that slightly deviate from the values predicted by a homogeneous charge-transfer reaction model.
Type Local :雑誌掲載論文
ISSN :0387-5008
Publisher :日本機械学会
URI :http://hdl.handle.net/20.500.12000/1388
Citation :日本機械学会論文集. A編 = Transactions of the Japan Society of Mechanical Engineers. A Vol.70 no.690 p.70 -73
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Engineering)

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