Effect of Phase Composition of the Hybrid Electrocatalysts Based on Nickel Phosphides and N,P-Doped Carbon on the Activities in the Processes of Hydrogen and Oxygen Evolutions From Water

IF 0.7 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY
D. O. Mazur, O. O. Pariiska, Ya.I. Kurys, V. G. Koshechko, V. D. Pokhodenko
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Abstract

The effect of the formation temperature of the composites based on Ni phosphides and N,P-doped carbon (NixPy/N,P-C) obtained by pyrolysis of a mixture of H3PO4-doped polyaniline and Ni(II) salt on their phase composition and electrocatalytic properties in the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) has been established. It is shown that increasing the pyrolysis temperature from 800 to 900 and 1000°C leads to an increasing in the content of the Ni2P phase in the composites with simultaneously Ni12P5 decreasing and NiP eliminating. It is found that the highest activity in HER in an acidic electrolyte, as well as in OER, is inherent to NixPy/N,P-C formed at 900°C (with a close ratio of Ni2P and Ni12P5 particles). The best performance in HER in an alkaline electrolyte is revealed by the obtained at 800°C analogue with dominant NiP particles and the highest N,P-doping level of the carbon.

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来源期刊
Theoretical and Experimental Chemistry
Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.60
自引率
10.00%
发文量
30
审稿时长
6-12 weeks
期刊介绍: Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.
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