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- W4294591437 abstract "Synthesizing efficient and affordable electrocatalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) remains a crucial problem on the way to practical applications for producing clean H2 fuel. Herein, high-efficiency and stable transition metal based electrocatalysts Ni0.85Se-1, Ni0.85Se-2 and Ni0.85Se-3 materials with different morphological characteristics were derived via a one-step hydrothermal route using the Ni(OH)2 and metal-organic framework (Ni-BDC and Ni-BTC) as precursors, respectively. The results showed that Ni0.85Se-2 exhibited excellent electrocatalytic activity. Subsequently, introducing carbon nanomaterials (RGO and CNTs) to form Ni0.85Se/RGO/CNTs nanocomposite material further improves the catalytic activity owing to high conductivity. The resulting Ni0.85Se/RGO/CNTs nanocomposites electrocatalyst showed a low overpotential of 232 mV and 165 mV and a low Tafel slope of 64 mV dec−1 and 98 mV dec−1 when the current density was 10 mA cm−2 for OER and HER, respectively. In addition, the Ni0.85Se/RGO/CNTs nanocomposites were used as an anode and cathode of the water electrolysis device and the overall water splitting performance was investigated. The results show just a voltage of 1.59 V was required when the current density was 10 mA cm−2 and good overall water splitting stability for 20 h. The outstanding electrocatalytic performance of Ni0.85Se/RGO/CNTs is mostly due to its noticeable porous structure, the high conductivity and the large surface area that came from RGO and CNTs." @default.
- W4294591437 created "2022-09-05" @default.
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- W4294591437 date "2022-10-01" @default.
- W4294591437 modified "2023-10-18" @default.
- W4294591437 title "A novel efficient dual-functional electrocatalyst for overall water splitting based on Ni0.85Se/RGO/CNTs nanocomposite synthesized via different nickel precursors" @default.
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- W4294591437 doi "https://doi.org/10.1016/j.ijhydene.2022.08.130" @default.
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