期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 270, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2021.124818
关键词
Hexagonal ferrites; Chemical substitution; Oxygen stoichiometry; Oxygen evolution reaction
资金
- Russian Foundation for Basic Research, RFBR [203870057]
- Russian Federation [MD5612.2021.4]
Two series of ferrite-based materials were synthesized and evaluated for their catalytic activity using thermodynamic and electrokinetic approaches. The results showed that different types of ferrites exhibited varying oxygen evolution reaction activities.
Two series of the ferrite-based materials have been synthesized for an oxygen evolution reaction (OER) activity screening. Series 1 includes different types of the ferrites: S-type (BaFe2O4), R-type (BaFe4Ti2O11), M-type (BaFe12O19) and tetravalent substituted M-type (BaFe11TiO19, BaFe10Ti2O19). Series 2 consists of a divalent substituted M-type ferrites (BaFe11.9Co0.1O18.95, BaFe11.9Ni0.1O18.95, BaFe11.9Zn0.1O18.96). The thermodynamic and electrokinetic approaches have been used to evaluate the best catalyst from both series of samples. According to the thermodynamics BaFe11.9Ni0.1O18.95 is the most preferable, while according to the kinetics BaFe10Ti2O19 has the best Tafel slope.
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