Electrodeposition, characterization and long term stability of NiW and NiWZn coatings on copper substrate in alkaline solution
作者： Yavuz Sürme , A. Ali Gürten , Kadriye Kayakırılmaz
DOI: 10.1007/S12540-013-4020-8
关键词:
摘要: This paper describes the electrodeposition of Ni, NiW and NiWZn coatings onto copper surfaces from electrolyte solutions containing Na3C6H5O7, Na2WO4, NiSO4 ZnSO4. The electrocatalytic effects electrodeposited were investigated for hydrogen evolution reactions in 1 M NaOH solution. Surface characterization studies carried out by energy dispersive X-ray spectroscopy, scanning electron microscopy, atomic force microscopy cross-section analysis. effect operating conditions on chemical composition, microstructure properties Ni-W was studied. Zn ions used to improve active surface area catalytic activity surface. coated electrodes reaction alkaline solution compared with that an Ni electrode substrate using cathodic polarization curves electrochemical impedance spectroscopy techniques over 96 h electrolysis. results proved showed better durability than bare Cu, coatings.
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