A kind of three-dimensional nitrogen-doped transition metal oxide/nickel sulfide composite catalyst and its preparation method and application
A technology of composite catalysts and transition metals, applied in physical/chemical process catalysts, chemical instruments and methods, electrolytic processes, etc., can solve the problems of poor electrical conductivity and difficulty in meeting the standards for industrial practical applications, and achieve improved electrocatalysis Activity, high-efficiency electrocatalytic activity and good stability, and the effect of optimizing the electronic structure
Active Publication Date: 2020-08-04
ZHEJIANG UNIV
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
But C-MoS 2 As an electrocatalyst, its own conductivity is not good, and it is difficult to meet the standards for industrial practical applications.
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0033] 1. Preparation of ammonium tetrathiomolybdate solution
[0034] (1) Weigh 30 mg of ammonium tetrathiomolybdate solid particles, dissolve in 1 mL of aqueous solution, and sonicate for 10 min.
[0035] 2. Preparation of 1.0M KOH solution
[0036] (1) Measure about 50mL of ultrapure water and 5.61g of potassium hydroxide, dissolve them with ultrapure water and stir, after cooling, dilute to volume in a 100mL volumetric flask.
[0037] 3. Preparation of nickel ammonium tetrathiomolybdate foam precursor
[0038] (1) Put the nickel foam into the prepared ammonium tetrathiomolybdate solution and immerse it for 30 minutes;
[0039] (2) Dry naturally at room temperature for 24 hours.
[0040] 4. MoO 2 / Ni 3 S 2 Preparation of NF catalyst
[0041] (1) The prepared nickel ammonium tetrathiomolybdate foam precursor was vacuum-sealed in a quartz sleeve, placed in a tube furnace for high-temperature calcination, and heated at 800°C for 3 hours;
[0042] (2) After the reaction i...
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
Login to View More PUM
Login to View More Abstract
The invention discloses a three-dimensional nitrogen-doped transition metal oxide / nickel sulfide composite catalyst, which includes nickel foam as a base, nitrogen-doped transition metal oxide and nickel sulfide grown in situ on the nickel foam. The invention also discloses a method for preparing a three-dimensional nitrogen-doped molybdenum dioxide / nickel sulfide composite catalyst: the nickel foam base is immersed in an ammonium tetrathiomolybdate solution, and dried after the impregnation is completed to obtain tetrathiomolybdate-containing A nickel foam precursor of ammonium; the nickel foam precursor is calcined at high temperature in a vacuum to obtain a molybdenum dioxide / nickel sulfide composite catalyst; the molybdenum dioxide / nickel sulfide composite material is further subjected to thermal ammoniation treatment to obtain three-dimensional nitrogen-doped molybdenum dioxide / Nickel sulfide composite catalyst. The present invention also provides a composite catalyst used as a cathode catalytic material in the electrolysis of water cathode HER reaction, which exhibits excellent electrocatalytic performance in alkaline electrolyte and has good stability, further improving the development and utilization of hydrogen energy. possibility.
Description
technical field [0001] The invention belongs to the technical field of nanometer material technology and electrochemical energy conversion, in particular to a three-dimensional nitrogen-doped transition metal oxide / nickel sulfide composite catalyst, its preparation method and application. Background technique [0002] Hydrogen energy is widely considered to be an ideal substitute for traditional fossil fuels. At present, among various hydrogen evolution methods, electrochemical water splitting hydrogen production is one of the most promising methods and has been extensively and deeply studied. However, among the current active electrocatalysts for the hydrogen evolution reaction (HER), noble metal Pt-based catalysts are the best reported electrocatalysts, but their high cost and scarcity hinder the large-scale industrial application of Pt-based catalysts. In recent years, many research efforts have been devoted to the development of low-cost non-noble metal HER electrocataly...
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
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/04B01J35/10C25B1/04C25B11/06
CPCB01J27/24C25B1/04C25B11/057C25B11/091B01J35/33B01J35/56B01J35/60Y02E60/36
Inventor 侯阳王淋杨彬雷乐成
Owner ZHEJIANG UNIV