Electrochemical hydrogen evolution and storage studies on bismuth nano hexagons. (22nd November 2018)

• Record Type: Journal Article
• Authors: Gupta, Sandeep; Singh, Rini; Agarwal, Garima; Ray, Kanad; Kothari, S.L.; Verma, Ajay S.; Saraswat, Vibhav K.; Awasthi, Kamlendra; Kumar, Manoj
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 47(2018)
• Page Start: 21642
• Page End: 21648
• Publication Date: 2018-11-22
• Subjects: Electrochemical hydrogen storage -- Hydrogen evolution reaction -- Nano hexagons -- Potentiostatic electrodeposition; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.03.207
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: 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.