CoP/EEBP/N-FLGS Nanocomposite as an Efficient Electrocatalyst of Hydrogen Evolution Reaction in Alkaline Media

The search for new hydrogen evolution reaction (HER) electrocatalysts with lower cost and higher activity and stability than noble metal catalysts is essential. In this regard cobalt phosphide is considered one of the most promising nanomaterials. The present work proposes a simple and efficient met...

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Bibliographic Details
Published in:Journal of composites science 2023-08, Vol.7 (8), p.328
Main Authors: Kochergin, Valerii K., Kotkin, Alexander S., Manzhos, Roman A., Krivenko, Alexander G., Khodos, Igor I., Kabachkov, Eugene N.
Format: Article
Language:English
Subjects:
Alkalies
Catalysis
Chemical engineering
Chemical engineering research
Chemical properties
Cobalt
cobalt phosphides
Composite materials
Electrocatalysts
electrochemical exfoliation of graphite
Electrodes
Electrolysis
Electrolytes
Energy industry
few-layer graphene structures
Fossil fuels
Graphene
Graphite
Hydrogen
hydrogen evolution reaction
Hydrogen evolution reactions
Nanocomposites
Nanomaterials
Nanoparticles
Nitrogen
Noble metals
Phosphides
Phosphorene
Phosphorus
Production processes
Stability
Synthesis
Two dimensional materials
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Summary:The search for new hydrogen evolution reaction (HER) electrocatalysts with lower cost and higher activity and stability than noble metal catalysts is essential. In this regard cobalt phosphide is considered one of the most promising nanomaterials. The present work proposes a simple and efficient method for the synthesis of a nanocomposite of graphene–phosphorene structures decorated with CoP nanoparticles 2–5 nm in size via the electrochemical exfoliation of black phosphorus carried out in the presence of nitrogen-doped few-layer graphene structures and followed by solvothermal synthesis in a Co2+-containing solution. The obtained CoP/EEBP/N-FLGS nanocomposite demonstrates high electrocatalytic activity and stability towards HER in an alkaline medium. The nanocomposite is characterized by an overpotential of 190 mV at a current density of 10 mA cm−2 as well as a small Tafel slope (78 mV dec−1). These characteristics make the CoP/EEBP/N-FLGS nanocomposite superior to most electrocatalysts based on cobalt phosphides. The results of this study could be in demand for the future design and improvement of HER electrocatalysts.
ISSN:2504-477X
2504-477X
DOI:10.3390/jcs7080328