硫酸浴を用いた無定型カーボン上へのコバルト電析に関する電気化学的研究
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概要
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Electrocrystallization of cobalt on a glassy carbon electrode (GEC) from aqueous sulfate solutions was investigated through the electrochemical techniques coupled with scanning electron microscopy (SEM) studies. The nucleation mechanism was examined as a function of deposition potential. By fitting the chronoamperometry experimental data into the Scharifker-Hills nucleation models, it was found that instantaneous nucleation following with the three-dimensional growth occurred for all deposition potentials, which was in accordance with the SEM observations. The nucleation kinetic parameters, using experimental current transients and theoretical formalism, were determined. The calculated diffusion coefficient was smaller than those presented in the literatures, which might result from solution without the supporting electrolyte. An increase of deposition overpotential produced higher nuclei population density.
- 公益社団法人 電気化学会の論文
著者
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GU M.
Key Lab for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engine
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YAO S.
Chemistry Department, State Key Laboratory for Physical Chemistry of Solid Surfaces, Institute of Ph
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ZHOU S.
Chemistry Department, State Key Laboratory for Physical Chemistry of Solid Surfaces, Institute of Ph
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GU M.
Key Lab for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University
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YAO S.
Chemistry Department, State Key Laboratory for Physical Chemistry of Solid Surfaces, Institute of Physical Chemistry, Xiamen University