Preparation method of sulfide complete water splitting catalyst with three-dimensional co-continuous macroporous heterostructure

A heterogeneous structure, co-continuous technology, applied in the electrolysis process, electrolysis components, electrodes, etc., can solve the problems of inability to obtain a macroporous skeleton structure and poor stability of the pore structure, achieve enhanced catalytic performance and stability, and increase the surface area , The effect of unique macroporous skeleton morphology

Active Publication Date: 2021-07-27
ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
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  • Description
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Problems solved by technology

Its porous structure is in the form of mesopores and micropores, and the macroporous skeleton structure cannot be obtained, and the stability of the pore structure is poor

Method used

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  • Preparation method of sulfide complete water splitting catalyst with three-dimensional co-continuous macroporous heterostructure
  • Preparation method of sulfide complete water splitting catalyst with three-dimensional co-continuous macroporous heterostructure
  • Preparation method of sulfide complete water splitting catalyst with three-dimensional co-continuous macroporous heterostructure

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Embodiment 1

[0057] Embodiment 1, the preparation method of a stable three-dimensional co-continuous macroporous heterostructure sulfide total water splitting catalyst, the following steps are carried out in sequence:

[0058] 1), the preparation of nickel cobalt hydroxide macroporous gel, specifically as follows:

[0059] 1.1) Add 1.2ml of deionized water and 2.4ml of glycerin into a 10ml glass bottle, stir and mix evenly, as a solvent.

[0060] 1.2) Weigh 1 mmol of nickel chloride hexahydrate and 2 mmol of cobalt chloride hexahydrate, add them into the solvent obtained in step 1.1), and continue stirring evenly until a purple-brown solution is obtained.

[0061] 1.3), weigh 4g of polyacrylic acid aqueous solution with a mass concentration of 35%, slowly add (addition time is about 1 minute) to the solution obtained in step 1.2) under stirring, continue stirring (stirring time is about 5 minutes) until obtaining homogeneous sol;

[0062] The molecular weight of polyacrylic acid is 100,0...

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Abstract

The invention discloses a preparation method of sulfide complete water splitting catalyst with a three-dimensional co-continuous macroporous heterostructure. The preparation method comprises the following steps: preparing nickel-cobalt hydroxide macroporous gel; and cutting up the nickel-cobalt hydroxide macroporous gel, carrying out heat treatment in an air atmosphere to obtain a NiCo2O4 block, and vulcanizing the NiCo2O4 block by adopting sublimed sulfur to obtain the Ni-Co-S ternary sulfide capable of being used as the complete water splitting catalyst. The stable three-dimensional co-continuous macroporous heterostructure sulfide complete water splitting catalyst is prepared in a mode of combining a sol-gel method and a gas phase vulcanization method, and the three-dimensional co-continuous macroporous heterostructure sulfide complete water splitting catalyst not only has a unique macroporous skeleton morphology, but also has relatively high catalytic performance, and has very high stability in a long-time catalytic reaction under relatively high current.

Description

technical field [0001] The invention relates to the field of effective preparation of clean and renewable hydrogen energy, in particular to a preparation method of a transition metal sulfide heterostructure catalyst in the field of high-performance and stable total water-splitting catalysts. Background technique [0002] Nowadays, with the continuous consumption of fossil energy, the accompanying problems of energy shortage and environmental pollution have become major problems plaguing human society. Therefore, advocating the use of sustainable clean energy has gradually become the mainstream of energy. Hydrogen production by electrolysis of water is considered as a promising energy solution, which can convert and store unstable forms of energy (such as solar and wind energy) into transportable clean hydrogen, so that the production is independent of location and time. Affects the stable output of the energy form. The entire electrolysis water reaction includes the oxygen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/091
CPCC25B1/04Y02E60/36
Inventor 郭兴忠刘富王凡杨辉
Owner ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
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