Preparation method of an adjustable egg yolk-shell structure nitrogen-carbon doped cobalt-molybdenum sulfide counter electrode catalyst

A cobalt molybdenum sulfide, shell structure technology, applied in physical/chemical process catalysts, chemical instruments and methods, circuits, etc., can solve the problems of falling off DSSC battery circuits, decreased battery efficiency, poor adhesion of carbon materials, etc. Stability, excellent electrocatalytic performance, and the effect of enhancing specific surface area
CN110575842BActive Publication Date: 2020-08-11FUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2020-08-11

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Abstract

The invention discloses a preparation method of a nitrogen and carbon-doped cobalt molybdenum sulfide NC-CoS2@Co-MoS2 catalyst with an adjustable yolk-shell structure. The preparation method comprisesthe following steps: dissolving ammonium sulfide and ammonium molybdate in water, adding ammonia water, carrying out an oil bath reaction, adding the obtained solution to a ZIF-67 polyhedral dispersion, performing mixing, and then performing stirring to obtain an intermediate ZIF-67@Co-MoS2; and further carrying out high-temperature vulcanization on the intermediate to obtain the NC-CoS2@Co-MoS2catalyst with the yolk-shell structure. The shell thickness, the core size and the yolk-shell spacing are controlled by regulating the specific reaction time and the reaction mass ratio to form the catalyst with different morphological structures in order to achieve different catalytic effects. The prepared catalyst has the advantages of high specific surface area, high porosity and good electro-catalytic performance, and is used for a dye-sensitized solar cell to achieve a photoelectric conversion efficiency of 9.38%.
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Description

technical field

[0001] The invention belongs to the field of material preparation, in particular to a nitrogen-carbon-doped cobalt-molybdenum sulfide catalyst NC-CoS with an adjustable egg yolk-shell structure 2 @Co-MoS 2 method of preparation. Background technique

[0002] Based on the over-exploitation and over-consumption of fossil energy in the last century and the gradual deterioration of the environment, the development of a green energy conversion device has become a hot topic in recent decades. Among all renewable clean energy sources, solar energy has the greatest utilization potential. Solar energy is universal, and it can be used in any place in the world that can be exposed to sunlight; and the use of solar energy will not cause any secondary pollution, which also makes it one of the most environmentally friendly available energy sources today. Efficient use of solar energy can completely change the existing way of energy utilization, allowing our society to e...

Claims

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