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- W4377694562 abstract "Oxygen evolution reaction is a momentous part of electrochemical energy storage and conversion devices such as rechargeable metal-air batteries. It is particularly urgent to develop low-cost and efficient electrocatalysts for oxygen evolution reactions. As a potential substitute for noble metal electrocatalysts, transition metal selenides are still challenging in improving the activity of oxygen evolution reaction and the research of reaction intermediates. In this study, a simple one-step solvothermal method was used to prepare a polymetallic compound carbon matrix composite (Co9Se8/Ni3Se4/Fe3O4@C) with a multilayered nanosheets structure. It exhibited good OER activity in an alkaline electrolyte solution with an overpotential of 268 mV at 10 mA/cm2 in an alkaline medium. Besides, this catalyst also showed excellent performance in the 24 hours stability test. The composite presents a multi-layer sheet structure, which effectively improves the contact between the active site and the electrolyte. The selenide formed by Ni and Co has a synergistic effect, Fe3O4 and Co9Se8 form a heterojunction structure, which can effectively improve the reaction activity by initiating the electronic coupling effect through the interface modification. In addition, carbon quantum dots have rich heteroatoms and electron transferability, which improves the electrochemical properties of the composites. This work provides a new strategy for the preparation of highly efficient OER electrocatalysts utilizing the multimetal synergistic effect." @default.
- W4377694562 created "2023-05-24" @default.
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- W4377694562 date "2023-05-23" @default.
- W4377694562 modified "2023-09-27" @default.
- W4377694562 title "Carbon Quantum Dots Doped Ni<sub>3</sub>Se<sub>4</sub>/Co<sub>9</sub>Se<sub>8</sub>/Fe<sub>3</sub>O<sub>4</sub> Multilayer Nanosheets Prepared by One-Step Solvothermal Method to Boost Electrocatalytic Oxygen Evolution" @default.
- W4377694562 doi "https://doi.org/10.20944/preprints202305.1611.v1" @default.
- W4377694562 hasPublicationYear "2023" @default.
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