Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing Ti3C2 loaded ZnO composite hydrogen storage material

A technology of hydrogen storage materials and composite materials, which is applied in the field of preparation of Ti3C2-loaded ZnO composite hydrogen storage materials, which can solve the problems that the electrical conductivity cannot meet the demand, and achieve good hydrophobicity, improved hydrogen storage performance, and good hydrogen release performance.

Inactive Publication Date: 2019-03-01
DONGGUAN UNIV OF TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ti 3 AlC 2 The material is corroded by HF to form a typical two-dimensional layered independent crystal Ti 3 C 2 , Ti 3 C 2 As a layered crystal, nanopowder has a stable structure, is green and environmentally friendly, has a large specific surface area and good conductivity, and can be used in the technical field of hydrogen storage materials; however, a single Ti 3 C 2 The electrical conductivity can no longer meet the demand, and the nanocomposite material has higher catalytic hydrogen storage performance than a single material, so it can be obtained by compounding Ti 3 C 2 A hybrid two-dimensional composite hydrogen storage material is made with other materials; ZnO in transition metal oxides is a highly active material with good electrical conductivity, and ZnO has the characteristics of multi-morphology controlled growth, that is, to achieve different ratios The control of surface area, ZnO has been widely concerned as a potential hydrogen storage material at present

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing Ti3C2 loaded ZnO composite hydrogen storage material
  • Method for preparing Ti3C2 loaded ZnO composite hydrogen storage material
  • Method for preparing Ti3C2 loaded ZnO composite hydrogen storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A kind of Ti 3 C 2 The preparation method of MXene composite hydrogen storage material comprises the steps:

[0050] S1, Ti 3 C 2 Preparation: Weigh Ti with a purity greater than 98% 3 AlC 2 5g of powder, soak it in 50ml of HF acid with a mass fraction of 40%, stir for 24h, wash with deionized water for 3-5 times until the pH of the cleaning solution reaches 5~6, centrifuge to get the powder, and dry at 80°C for 12h Get powdered Ti 3 C 2 ;

[0051] S2, Ti 3 C 2 / Preparation of ZnO:

[0052] Option 1: Weigh 0.1g of Ti prepared in Example 1 3 C 2 Disperse in 50mL deionized water, add 3.66g Zn(NO 3 ) 2 ·6H 2 O, stirred for 0.5h, then added 9.8g NaOH and 2.38g SDBS, mixed evenly, and reacted hydrothermally at 100°C for 15h; after cooling at room temperature, centrifuged, washed with ionized water until the pH value of the supernatant was neutral; then washed with acetone and absolute ethanol for 3 times respectively; after drying at 40°C for 24 hours, Ti 3...

Embodiment 2

[0065] PL / Ti by hydrogen storage tester 3 C 2 / ZnO / MF composite hydrogen storage material samples for hydrogen storage performance test, the mass of the sample used in each test is about 0.2g, during the hydrogen desorption test of programmed temperature, put the sample into the reactor, and then connect it to the hydrogen storage tester for pumping Vacuum for testing; from room temperature to 500°C at a rate of 5°C / min. During the constant temperature dehydrogenation test, after vacuuming, the reactor needs to be filled with 100bar H 2 , quickly heated to the specified temperature, and after the temperature stabilized, the constant temperature hydrogen desorption performance test was carried out.

[0066] Figure 8 for PL / Ti 3 C 2 / ZnO / MF composite hydrogen storage material TPD curve of temperature programmed dehydrogenation, from Figure 8 It can be seen that PL / Ti 3 C 2 / ZnO / MF (a) and PL / ZnO / MF (b) both exhibit a three-step dehydrogenation process, in which PL / Ti 3...

Embodiment 3

[0070] In order to examine PL / Ti 3 C 2 Hydrogen desorption reaction mechanism of / ZnO / MF composite hydrogen storage materials, for PL / Ti 3 C 2 The XRD and FTIR spectra of the / ZnO / MF composite hydrogen storage material were tested at different temperatures, and the results are as follows Figure 11-12 shown by Figure 11 It can be seen that when the heating temperature reaches 100 °C, there is still LiBH 4 phase, and a new substance Li 3 BO 3 , indicating that at low temperature LiBH 4 React with PMMA to release a small amount of hydrogen, and Figure 8 Corresponding to the first dehydrogenation stage of the middle hydrogen desorption curve; continue to increase the temperature to 200 ° C, and observe LiBH in the XRD pattern 4 Decrease, there is a new substance LiB 5 o 8 appears, and Li 3 BO 3 still exists, indicating that LiBH 4 Further react with PMMA to release hydrogen; further increase the temperature to 300 ° C, almost no LiBH can be observed 4 phase (from ...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a Ti3C2 loaded ZnO composite hydrogen storage material. According to the method, firstly, a Ti3C2 loaded ZnO two-dimensional composite hydrogen storage material is synthesized from Ti3C2, Zn(NO3)2.6H2O, NaOH and SDBS, which serve as raw materials, under the condition of different zinc-titanium ratios by adopting a hydrothermal method, then, a Ti3C2 / ZnO composite material solution is absorbed by using melamine foam through a dipping method, and finally, the Ti3C2 / ZnO composite material solution is compounded with PMMA-LiBH4 through a dipping-evaporation method and is loaded to the surface of Ti3C2 / ZnO and branches of the melamine foam; the structure of the material cannot be destroyed through the dipping method, and meanwhile, the hydrogen release performance of the PMMA-LiBH4 is greatly improved. The PL / Ti3C2 / ZnO / MF composite hydrogen storage material prepared by the method has the initial hydrogen release temperature of 72 DEG C, and thehydrogen release volume in 3h at the temperature of 350 DEG C reaches 8.1wt%.

Description

technical field [0001] The invention relates to the technical field of hydrogen storage materials for new energy materials, in particular to a Ti 3 C 2 A preparation method of loaded ZnO composite hydrogen storage material. Background technique [0002] The development of safe and efficient storage and transportation technology is the key to the development of hydrogen economy. Solid hydrogen storage materials are considered to be ideal hydrogen storage materials because of their high safety and convenient storage. Among them, light metal complex hydrides are favored due to their high hydrogen storage capacity. Being widely concerned, lithium borohydride (LiBH 4 ) mass hydrogen storage density and volume hydrogen storage density are 18.5wt% and 121kg / m 3 , but there are still some shortcomings such as high hydrogen desorption temperature and poor reversibility, which seriously hinder its application as a hydrogen storage material. [0003] In order to improve the LiBH 4...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02C01B32/921C01G9/02B82Y40/00
CPCB82Y40/00C01B3/0078C01B32/921C01G9/02C01P2002/72C01P2002/82C01P2004/03C01P2004/16Y02E60/32
Inventor 申芳华谢春晓
Owner DONGGUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com