Abstract
Electrocatalytic water splitting is crucial for H2 production, which faces challenges with expensive and scarce noble metal catalysts. There is a persistent need for affordable, efficient electrodes facilitating both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). This study introduces a facile microwave synthesis method for nickel phosphide nanosheets (Ni5P4 NSs). These NSs demonstrate low overpotentials 110 mV for HER, 235 mV for OER at 10 mA cm−2 in 1 M KOH. Additionally, they show excellent overpotential 1.44 V at 10 mA cm−2 and remarkable durability for overall water splitting in the same conditions. This research highlights Ni5P4 NSs as promising bifunctional catalysts for electrochemical water splitting, offering a cost-effective and efficient alternative to noble metal catalysts in energy storage and conversion applications.
Original language | English |
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Article number | 136920 |
Journal | Materials Letters |
Volume | 371 |
DOIs | |
Publication status | Published - 15 Sept 2024 |
Externally published | Yes |
Keywords
- Energy storage and conversion
- Microwave-assisted growth
- Nanosheets
- NiP
- Overall water splitting
- Porous materials