A kind of nickel selenide and ternary nickel-iron selenide composite electrocatalyst and its preparation method and application

An electrocatalyst, nickel-iron selenide technology, applied in chemical instruments and methods, physical/chemical process catalysts, electrodes, etc., to achieve the effects of good stability, good stability, and high catalytic activity

Active Publication Date: 2020-05-22
ZHEJIANG UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But not yet about NiSe 2 Research on other morphologies, so how to prepare NiSe with larger specific surface area 2 It is a technical problem that needs to be solved in this field

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
  • A kind of nickel selenide and ternary nickel-iron selenide composite electrocatalyst and its preparation method and application
  • A kind of nickel selenide and ternary nickel-iron selenide composite electrocatalyst and its preparation method and application
  • A kind of nickel selenide and ternary nickel-iron selenide composite electrocatalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Weighing of selenium powder

[0034] (1) Weigh 60 mg of selenium powder and put it into the bottom of the quartz tube.

[0035] 2. Pretreatment of nickel-iron foam

[0036] (1) The nickel foam was impregnated with 1mol / L hydrochloric acid solution, acetone solution, and absolute ethanol solution for 10 min and ultrasonically cleaned for 10 minutes, and finally cleaned three times with distilled water ultrasonically.

[0037] Preparation of 3.1mol / L KOH solution

[0038] (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.

[0039] 4. In situ growth of NiSe on the surface of nickel-iron alloy foam 2 and ternary NiFe 2 Se 4 Preparation of composite electrocatalyst

[0040] (1) Put the pretreated foam nickel-iron alloy and the weighed selenium powder into the quartz tube, and vacuum seal the tube;

[0041] (2) Put the sealed quartz tube...

Embodiment 2

[0044] 1. Weighing of selenium powder

[0045] (1) Weigh 40 mg of selenium powder and put it into the bottom of the quartz tube.

[0046] 2. Pretreatment of nickel-iron foam

[0047] (1) The nickel foam was impregnated with 1mol / L hydrochloric acid solution, acetone solution, and absolute ethanol solution for 10 min and ultrasonically cleaned for 10 minutes, and finally cleaned three times with distilled water ultrasonically.

[0048] Preparation of 3.1mol / L KOH solution

[0049] (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.

[0050] 4. In situ growth of NiSe on the surface of nickel-iron alloy foam 2 and ternary NiFe 2 Se 4 Preparation of composite electrocatalyst

[0051] (1) Put the pretreated foam nickel-iron alloy and the weighed selenium powder into the quartz tube, and vacuum seal the tube;

[0052] (2) Put the sealed quartz tube...

Embodiment 3

[0054] 1. Weighing of selenium powder

[0055] (1) Weigh 80 mg of selenium powder and put it into the bottom of the quartz tube.

[0056] 2. Pretreatment of nickel-iron foam

[0057] (1) The nickel foam was impregnated with 1mol / L hydrochloric acid solution, acetone solution, and absolute ethanol solution for 10 min and ultrasonically cleaned for 10 minutes, and finally cleaned three times with distilled water ultrasonically.

[0058] Preparation of 3.1mol / L KOH solution

[0059] (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.

[0060] 4. In situ growth of NiSe on the surface of nickel-iron alloy foam 2 and ternary NiFe 2 Se 4 Preparation of composite electrocatalyst

[0061] (1) Put the pretreated foam nickel-iron alloy and the weighed selenium powder into the quartz tube, and vacuum seal the tube;

[0062] (2) Put the sealed quartz tube...

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
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a nickel selenide and ternary nickel selenide iron composite electrocatalyst. The nickel selenide and ternary nickel selenide iron composite electrocatalyst comprises foam nickel iron alloy, and a layered electrocatalyst layer formed on the surface of the foam nickel iron alloy through in-situ growth; the layered electrocatalyst comprises NiSe2 and NiFe2Se4, and is of a three dimensional nanometer wrinkle structure. The invention also provides a preparation method of the composite electrocatalyst. The preparation method comprises following steps: nickel iron alloy is subjected to ultrasonic cleaning; selenium powder is introduced at the bottom of a quartz tube, the foam nickel iron ally is fixedly arranged at the middle part of the quartz tube, and vacuum sealing ofthe quartz tube is carried out; the quartz tube is introduced into a tubular furnace for calcining, so that in-situ growth of the layered electrocatalyst of the three dimensional nanometer wrinkle structure on the surface of the foam nickel iron alloy is realized. The invention also provides applications of the composite electrocatalyst in electrocatalytic water decomposition to prepare oxygen under alkaline conditions. The layered electrocatalyst is of the three dimensional nanometer wrinkle structure, so that the electrochemical area of the composite electrocatalyst is enlarged, and high activity and stability on electrocatalytic oxygen evolution reaction are achieved.

Description

technical field [0001] The invention belongs to the technical field of nanometer material technology and electrochemical energy conversion, in particular to a NiSe 2 and NiFe 2 Se 4 Composite electrocatalyst, preparation method and application. Background technique [0002] With the increasing energy crisis and environmental pollution problems. As a green renewable energy, hydrogen energy is clean and efficient compared to other traditional fuels such as coal. Water electrolysis is a promising renewable energy storage method for large-scale conversion into high-energy-density clean hydrogen and oxygen. In previous studies, most OER electrocatalysts were based on noble metal (Ru and Ir) compounds because of their high stability and good catalytic activity. However, these noble metal compounds are scarce on earth, which limits their large-scale applications. Therefore, to replace noble metals with earth-abundant elements, it is necessary to develop cost-effective non-pre...

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 Patents(China)
IPC IPC(8): B01J27/057B01J35/04C25B1/04C25B11/06
CPCB01J27/0573B01J35/0033B01J35/04C25B1/04C25B11/04Y02E60/36
Inventor 侯阳袁佳欣杨彬雷乐成
Owner ZHEJIANG UNIV
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