Bi-metal layered hydroxide chelated Ti3C2 compound as well as preparation method and application thereof

A bimetallic layered and hydroxide technology, applied in the field of electrocatalysis, can solve the problems of cost barriers and high scarcity of platinum, and achieve the effects of low cost, large amount of hydrogen evolution, and low initial potential

Inactive Publication Date: 2019-08-02
LIAONING UNIVERSITY
View PDF6 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scarcity and high cost of platinum have seriously hindered the widespread application of platinum in electrolyzer hydrogen production.

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
  • Bi-metal layered hydroxide chelated Ti3C2 compound as well as preparation method and application thereof
  • Bi-metal layered hydroxide chelated Ti3C2 compound as well as preparation method and application thereof
  • Bi-metal layered hydroxide chelated Ti3C2 compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) FeCo-LDH / Ti 3 C 2 - Preparation of MXene

[0032] Including the following steps:

[0033] 1. Ti 3 C 2 - Preparation of MXene:

[0034] 1) Weigh 0.2g Ti in a 50mL centrifuge tube 3 AlC2 -MAX, slowly add 0.2g LiF and 2ml 98% hydrochloric acid, stir at room temperature for 72h, add deionized water, centrifuge the obtained reaction solution (10000rpm, 10min) 6 times, and discard the supernatant.

[0035] 2) Add 40 mL of deionized water to the sediment in the centrifuge tube, shake well to mix the sediment and deionized water evenly, put the centrifuge tube into a high-power ultrasonic machine for ultrasonic dispersion (750W, 10min), take it out and continue centrifuging ( 3500rpm, 10min) to collect the supernatant, filter and vacuum dry to obtain a small layer of Ti 3 C 2 -MXene.

[0036] 2. FeCo-LDH / Ti 3 C 2 - Preparation of MXene

[0037] 1) Weigh 0.0811g ferric chloride, 0.531g cobalt acetate and 0.336g potassium hydroxide, add 2mL deionized, ultrasonic ...

Embodiment 2

[0048] Example 2 Effects of Different Modified Electrodes on Electrocatalytic Anode Water Oxidation

[0049] (1) Electrode preparation

[0050] Get the FeCo-LDH / Ti that 4mg embodiment 1 prepares respectively 3 C 2 -MXene powder, Ti 3 C 2 -FeCo-LDH and Co(OH) prepared by MXene powder and comparative example 1 2 For the catalyst, add 995 μl absolute ethanol and 5 μl Nafion respectively, ultrasonically disperse for 5 minutes, and stir for 1 hour. The resulting mixture was transferred to glassy carbon electrodes in 5 μl using a pipette gun, and dried at room temperature to completely evaporate the solvent to obtain glassy carbon electrodes coated with different materials.

[0051] (2) Electrochemical performance testing

[0052] All the tests in this experiment were performed on the CHI660E electrochemical workstation of Shanghai Chenhua Company.

[0053] Detect linear sweep voltammetry (LSV) with a rotation rate of 1600rpm and a scan rate of 10mV s -1 . The glassy carbon...

Embodiment 3

[0055] Example 3 FeCo-LDH / Ti 3 C 2 - Catalytic stability test of MXene as a catalytic hydrogen evolution material

[0056] (1) Preparation of electrodes

[0057] Get the FeCo-LDH / Ti that 4mg embodiment 1 prepares respectively 3 C 2 - MXene powder and FeCo-LDH prepared in Comparative Example 1 were added with 995 μl of absolute ethanol and 5 μl of Nafion, ultrasonically dispersed for 5 min, and stirred for 1 h. Transfer 5 μl of the obtained mixture to a glassy carbon electrode with a pipette gun, and dry at room temperature to completely evaporate the solvent to obtain FeCo-LDH / Ti 3 C 2 -MXene modified electrode and FeCo-LDH modified electrode.

[0058] (3) Electrochemical performance test

[0059] FeCo-LDH / Ti 3 C 2 -MXene modified electrode and FeCo-LDH modified electrode as working electrode, Pt wire as counter electrode, Ag / AgCl as reference electrode to form a three-electrode system, with 1M KOH solution as electrolyte, using standard three electrodes on CHI760D el...

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

No PUM Login to view more

Abstract

The invention discloses a bi-metal layered hydroxide chelated Ti3C2-MXene catalyst as well as a preparation method and an application thereof, and relates to the technical field of electrochemistry. The preparation method of the bi-metal layered hydroxide chelated Ti3C2-MXene catalyst comprises following steps: Ti3AlC2-MAX is taken as a raw material, and Ti3C2-MXene is obtained with a LiF+HCl stripping method; hydroxide of Fe and Co is mixed with Ti3C2-MXene, the mixture is heated to 120 DEG C under protection of Ar gas and kept at the temperature for 3 h, and FeCo-LDH/Ti3C2-MXene is obtainedby centrifugation and 60-DEG C vacuum drying. The preparation of the bi-metal layered hydroxide compound is simple and safe to operate, a glassy carbon electrode supported with the FeCo-LDH/Ti3C2-MXene compound is taken as a working electrode, the electro-catalysis of hydrogen evolution process by cathodic water oxidation is studied, the initial potential is lower, and hydrogen output is larger.

Description

technical field [0001] The invention belongs to the field of electrocatalysis, specifically iron-cobalt layered hydroxide chelation in two-dimensional layered Ti 3 C 2 - FeCo-LDH / Ti obtained on MXene 3 C 2 -MXene material, which can improve the hydrogen evolution effect of the electrocatalytic cathode. Background technique [0002] In the contemporary society where energy is increasingly scarce, the efficient conversion of energy has become a hot and important issue. Hydrogen is considered as an important clean energy alternative to fossil fuels and can be produced by electrocatalytic water splitting. Electrocatalysis through electrocatalysis to obtain hydrogen energy plays an important role in alleviating the energy crisis today. However, the process of electrocatalytic hydrogen energy harvesting will face many problems, such as how to achieve low overpotential and high electrocatalytic rate and how to overcome the slow kinetics. Platinum is the most efficient catalys...

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): B01J27/22C25B1/04C25B11/06
CPCB01J35/0033B01J27/22C25B1/04C25B11/091Y02E60/36
Inventor 姜毅田明夏立新徐英明
Owner LIAONING UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap