NDLI: Electrocatalytic behavior of Ni-based amorphous alloys for hydrogen evolution

Content Provider	Springer Nature Link
Author	Mihailov, L. Spassov, T. Kanazirski, I. Tsvetav, I.
Copyright Year	2011
Abstract	Ni-based amorphous alloys were synthesized by rapid quenching from the melt, using a planar flow technique. Their amorphous nature and thermal stability were studied by X-ray diffraction and differential scanning calorimetry. The electrocatalytic activity of the as-quenched amorphous alloys with respect to the hydrogen evolution reaction (HER) in alkaline water electrolysis was studied in relation to the alloy composition. The kinetic parameters of the HER were evaluated by cyclic voltammetry and impedance spectroscopy techniques in 6 M KOH at room temperature. The electrocatalytic activity of the amorphous alloys was found to depend on the alloy composition. It was obtained that molybdenum containing amorphous alloys (Ni–Mo–B) showed a superior electrocatalytic activity in the HER compared to Ni–(Nb,Ta)–B and Ni–Si–B, as Ni$_{66.5}$Mo$_{28.5}$B$_{5}$ revealed considerably lower charge transfer resistance and higher exchange current density than Ni$_{63}$Mo$_{27}$B$_{10}$. The results have to be attributed to an improved intrinsic activity of the Ni–Mo–B alloys compared to the other Ni-based glasses.
Starting Page	7068
Ending Page	7073
Page Count	6
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	46
Issue Number	22
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2011-03-09
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Polymer Sciences Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials Mechanics Crystallography
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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