Ultrafine metal phosphide nanoparticles in situ encapsulated in porous N,P-codoped nanofibrous carbon coated on carbon paper for effective water splitting

The rapid growth of environment pressures and fast depletion of fossil fuels compel public to pay more attention on developing affordable and efficient catalysts for renewable energy production. Metal (Co, Fe, Ni, etc.) phosphide nanoparticles uniformly encapsulated in porous N,P-codoped nanofibrous...

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Bibliographic Details
Published in:Electrochimica acta 2018-01, Vol.261, p.454-463
Main Authors: Ren, Jin-Tao, Yuan, Ge-Ge, Weng, Chen-Chen, Yuan, Zhong-Yong
Format: Article
Language:English
Subjects:
Carbon
Carbonization
Catalysis
Catalysts
Chemical evolution
Coating effects
Cobalt
Cobalt phosphide
Electrocatalysis
Encapsulation
Energy conversion
Energy storage
Fossil fuels
Hydrogen
Hydrogen evolution
Hydrogen storage
Iron
Nanoparticles
Nickel
Nitrogen and phosphorus doping
Overall water splitting
Oxidation
Oxygen
Oxygen evolution
Phosphating (coating)
Phosphides
Storage systems
Water splitting
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Summary:The rapid growth of environment pressures and fast depletion of fossil fuels compel public to pay more attention on developing affordable and efficient catalysts for renewable energy production. Metal (Co, Fe, Ni, etc.) phosphide nanoparticles uniformly encapsulated in porous N,P-codoped nanofibrous carbon coated on carbon paper (MeP@NPC/CP) are prepared through one-pot carbonization-phosphorization strategy, which are potential for effective electrocatalytic water reduction/oxidation reactions. The well-designed self-supported structure and the abundant accessible active centers together contribute to the high electrocatalytic performance for hydrogen and oxygen evolution. Remarkably, an alkaline electrolyzer assembled from CoP@NPC/CP as cathode and anode can afford the current density of 10 mA cm−2 at the voltage of 1.67 V for overall water splitting in alkaline media with excellent stability. The easily prepared route with suitable structural and textural properties endows this self-supported materials with versatile function as abundant metal catalysts for realistic energy conversion and storage systems.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2017.12.158