An advanced FeCoNi nitro-sulfide hierarchical structure from deep eutectic solvents for enhanced oxygen evolution reaction. Issue 68 (7th August 2019)

• Record Type: Journal Article
• Authors: Jiang, Jingyun; Chang, Liangyu; Zhao, Wancheng; Tian, Qingyong; Xu, Qun
• Is Part Of: Chemical communications. Volume 55:Issue 68(2019)
• Page Start: 10174
• Page End: 10177
• Publication Date: 2019-08-07
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc05389a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : An advanced trimetal FeCoNi-based nitro-sulfide (FeCoNi-NS) hierarchical structure has been synthesized, which exhibits excellent oxygen evolution reaction (OER) performance. Abstract : A tri-metal material system of FeCoNi-based nitro-sulfide (FeCoNi-NS) hierarchical structure has been successfully synthesized via a deep eutectic solvent annealing process. The as-prepared FeCoNi-NS possesses interesting N, S-binary heteroatoms evenly doped with Fe, Co, and Ni. By taking advantage of the unique structure including multi-metal sites, high BET area and porous structures, the as-prepared FeCoNi-NS exhibited excellent oxygen evolution reaction (OER) performance, achieving a current density of 10 mA cm −2 at an overpotential of 251 mV and a low Tafel slope of 58 mV dec −1 in 1 M KOH. Furthermore, FeCoNi-NS also demonstrated highly efficient mass/charge transportation, long-term stability with 2% deactivation after ten hours continuous operation and high faradaic efficiency of 98%. Such a facile synthetic strategy is applicable to the fabrication of more mutil-metal hierarchical structures for energy conversion and storage.