Straightforward preparation of nickel selenide nanosheets supported on nickel foam as a highly efficient electrocatalyst for oxygen evolution reaction. (19th July 2022)

• Record Type: Journal Article
• Authors: Wang, Yuqing; He, Fangzhen; Ren, Yanmei; Lin, Yasu; Zhong, Ming; Su, Bitao; Lei, Ziqiang
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 61(2022)
• Page Start: 25631
• Page End: 25637
• Publication Date: 2022-07-19
• Subjects: Nickel selenide/nickel foam -- Self-support -- Selenization -- Oxygen evolution reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.06.009
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The development of economical, durable, and efficient oxygen evolution reaction (OER) electrocatalysts is essential for large-scale industrial water electrolysis. Here, a straightforward strategy is proposed to synthesize a series of nickel selenide nanosheets supported on nickel foam (NiSe2 /NF) materials by directly selenizing nickel foam substrates at different temperatures under an inert atmosphere. When evaluated as electrocatalysts in OER, the optimal self-supported NiSe2 /NF-350 shows an excellent performance in 1.0 M KOH medium with an overpotential of 458 mV at 100 mA cm −2, a small Tafel slope of 45.8 mV dec −1, and a long-term stability for 36 h. Furthermore, the structural and compositional preservation for NiSe2 /NF-350 after stability test was also verified by various characterizations. Graphical abstract: A quite simple selenization was adopted to prepare self-supported nickel selenide nanosheets/nickel foam materials with excellent OER performance. Image 1 Highlights: NiSe2 /NF was prepared by a super simple selenization. The method has low energy consumption and simple operation. The NiSe2 /NF-350 electrode demonstrates the excellent OER performance.