Efficient alkaline water electrolysis with an iron-incorporated yttrium oxide/yttrium phosphide nanorod catalyst on Ni foam: overpotential reduction and electrochemical insights

Document Type

Article

Publication Date

7-3-2024

Department

Department of Chemistry

Abstract

The suitability of nonnoble transition metal phosphide-based catalysts for bifunctional water-splitting applications is explored in this study. Here, through a wet impregnation and phosphodization method, a yttrium phosphide catalyst supported by varying ratios of iron-incorporated yttrium oxide nanorod is reported. The 1 : 1 ratio Fe-incorporated Y2O3-supported yttrium phosphide (FeYP11) exhibits efficient bifunctional catalytic activity attributed to heightened charge transfer and facilitated mass transport. The FeYP11 electrocatalyst manifests overpotentials of 301 and 19 mV at 10 mA cm−2 for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in an alkaline solution, respectively. Furthermore, electrochemical water splitting is achieved at 10 mA cm−2 and 100 mA cm−2 with cell voltages of 1.53 and 1.56 V, respectively. This investigation provides crucial insights into supported structure catalysts and the cost-effective nature of bifunctional phosphide-based catalysts for water electrolysis.

Publisher's Statement

© 2024 The Author(s). Published by the Royal Society of Chemistry. Publisher’s version of record: DOIhttps://doi.org/10.1039/D4MA00362D

Publication Title

Materials Advances

Creative Commons License

Creative Commons Attribution 3.0 License
This work is licensed under a Creative Commons Attribution 3.0 License.

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