Preparation and application of MOF-guided nickel-cobalt bimetallic phosphide

A bimetallic and phosphide technology, applied in chemical/physical processes, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as high Tafel slope and large overpotential, and achieve excellent electrocatalytic performance and The effect of stability
CN111111716AActive Publication Date: 2020-05-08NORTHWEST NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWEST NORMAL UNIVERSITY
Publication Date
2020-05-08

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Abstract

The invention discloses a preparation method of a MOF-guided nickel-cobalt bimetallic phosphide. The preparation method comprises the steps: fully dissolving 1,4-terephthalic acid in a mixed solutionof ethanol, deionized water and DMF, adding NiCl2.6H2O and CoCl2.6H2O, adding ethanolamine, magnetically stirring, and carrying out ultrasonic dispersion, washing and vacuum drying under sealed conditions to obtain a nickel-cobalt bimetallic material marked as Ni1Co1-BDC; in an Ar atmosphere, calcining Ni1Co1-BDC and NaH2PO2.H2O at the temperature of 280-320 DEG C for 1-2 h, cooling to room temperature, washing, and carrying out vacuum drying to obtain the nickel-cobalt bimetallic phosphide marked as Ni1Co1-P. Ni1Co1-P is used as an electrocatalyst for water electrolysis oxygen evolution reaction, and Ni1Co1-P shows excellent electrocatalytic performance and stability in the oxygen evolution reaction process due to a unique layered porous structure, an ultrathin carbon film and the synergistic effect of high-activity nickel and cobalt.
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Description

technical field

[0001] The invention belongs to the technical field of synthesis and application of catalysts, and relates to the preparation of a nickel-cobalt double-metal phosphide, in particular to the preparation of a MOF-guided nickel-cobalt double-metal phosphide, which is mainly used as an electrocatalyst for the reaction of electrolysis of water and oxygen evolution middle. Background technique

[0002] Clean and renewable hydrogen energy is the most ideal alternative energy due to dwindling fossil fuel resources and increasing global pollution. The electrolysis of water is to generate hydrogen (H 2 ) and oxygen (O 2 ) process is one of the most promising methods for large-scale production of renewable hydrogen energy. However, OER requires the transfer of four protons and four electrons, which is difficult to perform from a thermodynamic point of view, and OER is a difficult point in water electrolysis. Currently, IrO 2 and RuO 2 are effective catalysts for O...

Claims

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