| Boosting water-splitting efficiency: innovative CNTs-infused erbium selenide electrocatalyst for alkaline media |
| Muhammad Afaq1, Sheraz Yousaf1, Mohd Zahid Ansari2, Abdullah Saad Alsubaie3 |
1Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
2School of Materials Science and Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, Republic of Korea
3Department of Physics, Khurma University College, Taif University, 21944, Taif, Saudi Arabia |
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Received: July 4, 2024; Revised: October 4, 2024 Accepted: December 29, 2024. Published online: March 21, 2025.
*Muhammad Afaq and Sheraz Yousaf contributed equally to this work. |
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| ABSTRACT |
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Developing cost-effective, highly active, and stable bifunctional electrocatalysts is vital for sustainable energy systems. Herein, we present the synthesis of erbium selenide and carbon nanotubes (CNTs) integrated erbium selenide via a one-step hydrothermal method. The prepared materials were characterized using various techniques: XRD for structural analysis, FTIR for identifying functional groups, SEM for examining morphology, and TGA for assessing thermal stability. The hybrid material shows excellent performance in both hydrogen-evolution reaction (HER) and oxygen evolution reaction (OER), with low overpotentials of 109 mV in HER and 180 mV in OER for 10 mAcm-2. The incorporation of CNTs enhances the erbium selenide performance by increasing the surface area (58 cm2), exposing more active sites, improving charge transfer efficiency, and providing structural stability. These factors lead to improved electrical conductivity, faster reaction kinetics, and a large electrochemical surface area, resulting in highly active and stable electrocatalytic performance for both HER and OER. |
| Key words:
Novel erbium selenide@CNTs catalyst · Oxygen evolution reaction · Hydrogen evolution reaction · Water splitting · Bifunctional electrocatalyst |
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