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Adjustable Ternary FeCoNi Nanohybrids for Enhanced Oxygen Evolution Reaction
Author(s) -
Yang Yang,
Wei Pengkun,
Hao Zewei,
Yu Qilin,
Liu Huajie,
Liu Lu
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201903509
Subject(s) - overpotential , tafel equation , oxygen evolution , ternary operation , catalysis , water splitting , materials science , oxygen , fluorine , chemical engineering , redox , nanotechnology , chemistry , metallurgy , electrode , electrochemistry , organic chemistry , photocatalysis , computer science , engineering , programming language
Water splitting as a greatly desired technology to produce clean renewable energy, but is hampered by the sluggish oxygen evolution reaction. So, the development of highly active and durable water oxidation electrocatalysts is of primarily significance for energy conversion. Here, a facial strategy to synthesize FeCoNi nanohybrids with adjustable morphological structures by using fluorine is introduced. The morphology and electrocatalytic activity of the sample is determined by the innovative introduction of fluorine. Among them, the overpotential at 10 mA cm −2 of the best sample is approximately 97 mV lower than the commercial RuO 2 toward the oxygen evolution reaction in 1 m KOH. Additionally, the catalysts also have low Tafel slopes and remarkable stability.