ItemArticle

Tuning the Electrocatalytic Properties of VO2(B): Role of W Doping in Bifunctional Water Splitting

Title
Tuning the Electrocatalytic Properties of VO2(B): Role of W Doping in Bifunctional Water Splitting
Creator
Anju, Jayachandran Sindhu; Chacko, Levna; Kenguruse, Neingutoulie Neipedenuo; Sanal, Kozhiparambil Chandran; Pineda-Aguilar, Nayely; Aneesh, Pacheri Madathil
Description
Vanadium-based systems have evoked considerable interest in researchers due to their potential for advanced renewable energy technologies. However, the possibilities of VO2(B) as an electrocatalyst for water splitting are yet to be explored, even though it is an excellent candidate as an electrode material for various batteries. In this work, the bifunctionality of VO2(B) is investigated in overall water electrolysis, focusing on its enhanced catalytic activity when doped with transition metal atoms such as tungsten (W). Hydrothermally synthesized W-doped VO2(B) nanoflakes demonstrate superior hydrogen evolution (HER) and oxygen evolution reactions (OER), confirming this enhanced catalytic activity. For an optimal W doping, the overpotential values decreased from 518 to 335mV and 435 to 348mV for hydrogen evolution and oxygen evolution, respectively. These observations are supported by the lowest Tafel slope values of 115 and 74mVdec?1 for HER and OER, respectively, and the lowest charge transfer resistance of 47 ?. The excellent stability of the nanostructures revealed by the chronopotentiometry demonstrates their reliable performance over extended periods. Together, these findings highlight that W-doped VO2(B) nanostructures are highly effective candidates as electrocatalysts for overall water-splitting applications. 2025 Wiley-VCH GmbH.
Source
Advanced Sustainable Systems;Volume;9;Issue;12;Article No.;e00344;
Date
01-01-2025
Publisher
John Wiley and Sons Inc
Subject
doping; electrocatalyst; hydrogen evolution reaction; overall water splitting; oxygen evolution reaction; vanadium dioxide
Coverage
Anju J.S., Department of Physics, Central University of Kerala, Periye, Kerala, Kasaragod, 671325, India; Chacko L., Department of Physics and Electronics, Christ University, Karnataka, Bangalore, 560029, India; Kenguruse N.N., Department of Physics, Central University of Kerala, Periye, Kerala, Kasaragod, 671325, India; Sanal K.C., Facultad de Ciencias Quicas, Universidad Automa de Nuevo Leon, San Nicolas de los Garza, 66455, Mexico; Pineda-Aguilar N., Centro de Investigaci en Materiales Avanzados, S.C. (CIMAV), Subsede Monterrey, Parque de Investigaci e Innovaci on Tecnolica, Apodaca, 66600, Mexico; Aneesh P.M., Department of Physics, Central University of Kerala, Periye, Kerala, Kasaragod, 671325, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 23667486;
Format
online
Language
English
Type
Article

Citation

Anju, Jayachandran Sindhu; Chacko, Levna; Kenguruse, Neingutoulie Neipedenuo; Sanal, Kozhiparambil Chandran; Pineda-Aguilar, Nayely; Aneesh, Pacheri Madathil, “Tuning the Electrocatalytic Properties of VO2(B): Role of W Doping in Bifunctional Water Splitting,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 20, 2026, https://archives.christuniversity.in/items/show/21738.

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