مشخصات پژوهش

عنوان	Preparation of nanostructured Co-Mo alloy electrodes and investigation of their electrocatalytic activity for hydrazine oxidation in alkaline medium
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	cyclic voltammetry, electrocatalytic activity, electrochemical impedance spectroscopy, electrodeposition, hydrazine electroxidation, nanostructured Co–Mo
چکیده	Cobalt and cobalt–molybdenum alloy electrodes are prepared by galvanic deposi- tion on copper substrates. In this paper, we report a study on the influence of alloying cobalt with molybdenum for the oxidation of hydrazine in 1 M NaOH aqueous solutions. The electrocatalytic properties of the electrodes are studied by cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical imped- ance spectroscopy (EIS). Scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS,) and inductively coupled plasma (ICP) analysis demonstrate that the structural features and compositions of the as-prepared Co–Mo coatings vary with the deposition conditions. Electro- chemical characterization indicates that the electrochemical properties and the electrocatalytic activity of the investigated alloys were strongly dependent on the microstructural features obtained under different deposition conditions. The over- all experimental data indicate that alloying cobalt with molybdenum metal leads to an increase of the electrocatalytic activity in hydrazine electroxidation com- pared to when using the pure cobalt electrode. High catalytic efficiencies were achieved on Co/25 at.% Mo and Co/33 at.% Mo electrodes, the latter being the best electrocatalyst for hydrazine electroxidation.
پژوهشگران	سعید جامه بزرگی (نفر چهارم)، جواد حسینی (نفر سوم)، علی بداغی (نفر دوم)، دکتر مهدی عبدالملکی (نفر اول)