Electrochemical hydrogen evolution and storage studies on bismuth nano hexagons

Bismuth nano hexagons were synthesized using potentiostatic electrodeposition and studied for their performance towards electrochemical hydrogen storage and evolution. Regular hexagons with edge length ≈ 500 nm and thickness ≈ 80 nm were observed in scanning electron microscopy (SEM). X-ray diffract...

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Bibliographic Details
Published in:International journal of hydrogen energy 2018-11, Vol.43 (47), p.21642-21648
Main Authors: Gupta, Sandeep, Singh, Rini, Agarwal, Garima, Ray, Kanad, Kothari, S.L., Verma, Ajay S., Saraswat, Vibhav K., Awasthi, Kamlendra, Kumar, Manoj
Format: Article
Language:English
Subjects:
Electrochemical hydrogen storage
Hydrogen evolution reaction
Nano hexagons
Potentiostatic electrodeposition
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Summary:Bismuth nano hexagons were synthesized using potentiostatic electrodeposition and studied for their performance towards electrochemical hydrogen storage and evolution. Regular hexagons with edge length ≈ 500 nm and thickness ≈ 80 nm were observed in scanning electron microscopy (SEM). X-ray diffraction (XRD) pattern indicates the presence of poly-crystalline bismuth and bismuth oxide in rhombohedral and cubic phases respectively. X-ray photoelectron spectroscopy (XPS) studies further confirm the presence of two phases of bismuth i.e. elemental bismuth and bismuth (III) oxide. Results indicate that these nano hexagons show good hydrogen ion (H+) storage and successive hydrogen gas (H2) evolution characteristics.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2018.03.207