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Water-electrolysis hydrogen making catalyst Co9S8 and preparation method thereof

A catalyst, water electrolysis technology, applied in the electrolysis process, electrolysis components, electrodes, etc., can solve the problems of high price, restrict the development path of industrialization, etc., and achieve the effect of broad space, high activity and stability, and high catalytic activity

Active Publication Date: 2018-08-21
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the noble metal Pt has high activity in catalytic hydrogen production, its high price limits its industrial development

Method used

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  • Water-electrolysis hydrogen making catalyst Co9S8 and preparation method thereof
  • Water-electrolysis hydrogen making catalyst Co9S8 and preparation method thereof
  • Water-electrolysis hydrogen making catalyst Co9S8 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Catalyst DR-Co 9 S 8 -The preparation method of I, step is as follows:

[0026] The first step, the precursor N,N - the preparation of cobalt di-n-butyldithiocarbamate, adopts and N,N - The same preparation method as zinc di-n-butyldithiocarbamate (Guoxing Zhu, Shuguang Zhang, Zheng Xu, Jing Ma and Xiaoping Shen, Ultrathin ZnS Single Crystal Nanowires: Controlled Synthesis and Room-Temperature Ferromagnetism Properties, J. Am. Chem. Soc. 2011, 133, 15605–15612), the difference is only that the zinc source is replaced by a cobalt source, and the specific steps are:

[0027] Put 80 mL of methanol in an ice-water bath, then add 2.64 g of NaOH and 11 ml of dibutylamine to the methanol, then add 3.96 ml of CS 2 Add dropwise to the above solution, and then add 80 ml of 0.42 M CoSO 4 ·7H 2 O solution, magnetically stirred for 8 h, filtered with suction, and then washed with ultrapure water three times, vacuum-dried at room temperature, and collected the dried product; 2...

Embodiment 2

[0030] The difference from Example 1 is that the reflux time in the second step is 7 h, and the others are the same as in Example 1.

[0031] The resulting target product number is DR-Co 9 S 8 -II.

Embodiment 3

[0033] The difference from Example 1 is that the reflux time in the second step is 14 h, and the others are the same as in Example 1.

[0034] The resulting target product number is DR-Co9 S 8 -III.

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PUM

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Abstract

The invention belongs to the technical field of water-electrolysis hydrogen making and discloses a water-electrolysis hydrogen making catalyst Co9S8 and a preparation method thereof. The preparation method comprises the following steps of: taking N,N-bi-n-butyl cobalt aminodithioformate as a precursor; heating the precursor, organophosphorus and organic amine to the temperature of 220-270 DEG C under the protection of inert atmosphere; carrying out refluxing for 3.5-14 hours; cooling to the room temperature; adding ethanol; subsequently carrying out centrifugation; correspondingly washing andcentrifuging the obtained solid substance by using n-heptane and chloroform in sequence; and finally carrying out vacuum drying at the room temperature to obtain the catalyst Co9S8. The preparation method disclosed by the invention is used for preparing the Co9S8 catalyst by adopting a simple method; and the prepared Co9S8 catalyst has quite high activity and stability when being applied to water-electrolysis hydrogen making.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production by electrolysis of water, in particular to a catalyst Co for hydrogen production by electrolysis of water 9 S 8 and its preparation method. Background technique [0002] The sustainable production of energy and the sustainable development of the environment are the main problems faced by today's society. The gradual depletion of fossil fuels and the resulting environmental pollution are increasingly threatening the survival of human beings. This also indicates that energy development will comprehensively consider many factors such as resources, efficiency, and environmental friendliness. Hydrogen is used as a secondary energy source. It not only has high energy efficiency but also produces almost no waste. It has the characteristics of cleanness, high efficiency, wide range of sources and renewability. The development of hydrogen energy can not only improve energy efficiency and red...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04B82Y30/00
CPCB82Y30/00C25B1/04C25B11/075Y02E60/36
Inventor 李保军张馨文刘艳艳
Owner ZHENGZHOU UNIV
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