Nickel-cobalt-tungsten polysulfide bifunctional catalyst with core-shell spherical structure as well as preparation method and application of nickel-cobalt-tungsten polysulfide bifunctional catalyst

A catalyst and sulfide technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of slow electron transfer rate, single-component material catalytic activity tends to bottleneck, etc., to achieve preparation Short process, excellent catalytic activity and hydrogen production performance, and high photoelectric conversion efficiency
CN112473697AActive Publication Date: 2021-03-12FUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2021-03-12

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Abstract

The invention discloses a preparation method of a nickel-cobalt-tungsten polysulfide bifunctional catalyst with a core-shell spherical structure. The method comprises the following steps: firstly, dissolving a cobalt salt, a nickel salt and glycerol in a specific solvent, then putting a mixed solution into a stainless steel high-pressure reaction kettle taking polytetrafluoroethylene as a lining,carrying out heating reaction for a period of time, and then carrying out centrifugal drying to obtain a nickel-cobalt glycerol precursor; and carrying out tungsten doping and vulcanization treatmenton the precursor, ammonium tungstate and thioacetamide under a solvothermal reaction condition to finally obtain the quaternary tungsten sulfide doped cobalt nickel sulfide Co9S8-Ni3S2@WS2 catalyst. The preparation method has the advantages of easily available raw materials, low cost, simple process, short reaction time, unique catalyst morphology, high specific surface area and excellent electrocatalytic performance, can be applied to dye-sensitized solar cells, has photoelectric efficiency of 9.67%, and has good application prospects in the field of water electrolysis hydrogen production.
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Description

technical field

[0001] The invention belongs to the field of preparation of catalyst materials, in particular to a nickel-cobalt-tungsten polysulfide bifunctional catalyst (Co 9 S 8 -Ni 3 S 2 @WS 2 ) and its preparation method and application. Background technique

[0002] With the development of the economy, energy and environmental issues are becoming more and more prominent. Therefore, the development of alternative and renewable green energy has become a top priority. As one of the cleanest energy sources, solar energy is considered to have great potential in the development and utilization of new energy due to its characteristics of being easy to collect and inexhaustible. At the same time, hydrogen energy has attracted much attention because of its non-toxic and environmentally friendly, abundant resources, high energy density, and various forms of utilization. It is known as the most ideal new energy in the 21st century.

[0003] Dye-sensitized solar cells (DSSC...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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