Well-defined 2D transition vanadium pentoxide (VO) flat nanorods with large-scale synthesis feasibility as an electrocatalyst for the oxygen evolution reaction (OER)

• Published in: Energy advances 2023-06, Vol.2 (6), p.784-788
• Main Authors: Mounasamy, Veena, Srividhya, Ganesan, Ponpandian, Nagamony
• Format: Article
• Language: English
• ISSN: 2753-1457; 2753-1457
• DOI: 10.1039/d3ya00100h

The unwavering focus on renewable energy generation has opened a wider research scope towards the study of electrocatalytic water splitting. In this regard, the present work deals with a low-cost synthesis strategy enabling large scale production of vanadium pentoxide (V 2 O 5 ) electrocatalysts for the oxygen evolution reaction (OER). Polycrystalline V 2 O 5 nanostructures with a 2D flat nanorod-like morphology with a rod length of about 1 μm were developed using a polymer-assisted solution technique. Benefitting from their unique morphology, V 2 O 5 nanorods showed commendable OER properties with a low Tafel slope value of 88 mV dec −1 and overpotential (ηOER) of 310 mV at 10 mA cm −2 . With a stable catalytic performance for 12 h, the V 2 O 5 nanorods grown with polymer assistance is proposed as a promising candidate for OER activity in the present study. Schematic representation of V 2 O 5 synthesis and its OER analysis.