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Preparation and application of graphene based metal compound nano array material

A nano-array and graphene-based technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, chemical instruments and methods, etc., can solve problems such as high cost, complex production process, and high energy consumption , to achieve the effect of short time consumption, simple operation stage and low energy consumption

Active Publication Date: 2017-07-04
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a synthesis method of a functional nano-array material with excellent performance, simple process, environmental protection and high-performance electrochemical catalytic activity, which overcomes the complicated production process, high energy consumption and high cost of conventional battery materials. shortcoming

Method used

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  • Preparation and application of graphene based metal compound nano array material
  • Preparation and application of graphene based metal compound nano array material
  • Preparation and application of graphene based metal compound nano array material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take 1.0g 1-ethyl-3-methylimidazole dicyanamide and ZnCl 2 / KCl (4g / 2g) salt mixture was mixed in a mortar and ground evenly. Subsequently, the homogeneously ground slurry was coated on a cleaned nickel foam substrate, followed by heat treatment at 1000° C. for 3 hours in argon. After heat treatment, wash with 0.5M hydrochloric acid aqueous solution, deionized water and absolute ethanol successively. After cleaning, the material was dried in a vacuum oven at 60° C. to collect graphitic carbon nanosheet (CNS) material. The prepared graphene carbon nanosheet (CNS) has a lateral dimension of 100-200 nm, and the CNS is strongly adhered to the nickel foam, and can keep its shape after washing and ultrasonic treatment.

[0044] Put the prepared graphite carbon nanosheets (CNS) in 10mM ferric nitrate solution at room temperature for 48 hours, then take them out, wash them with distilled water and absolute ethanol three times, and dry them to obtain graphene-based metal hydro...

Embodiment 2

[0047] Take 0.5g 1-ethyl-3-methylimidazole dicyanamide and ZnCl 2 / KCl (2g / 1g) salt mixture was mixed in a mortar and ground evenly. Subsequently, the uniformly ground slurry was coated on a cleaned nickel foam substrate, and then heat-treated at 900° C. for 3 hours under an argon atmosphere. After heat treatment, wash with 0.5M hydrochloric acid aqueous solution, deionized water and absolute ethanol successively. After cleaning, the material was dried in a vacuum oven at 60° C. to collect graphitic carbon nanosheet (CNS) material.

[0048] The prepared graphite carbon nanosheets (CNS) were electrochemically deposited using an electrochemical workstation at room temperature to prepare graphene-based metal hydroxides. Using graphite carbon nanosheets (CNS) as the working electrode, Ag / AgCl as the reference electrode, and nickel coil as the counter electrode, nickel hydroxide nanoparticles were directly deposited on the graphite carbon nanosheets (CNS) in 10mM ferric nitrate s...

Embodiment 3

[0051] Take 0.5g 1-ethyl-3-methylimidazole dicyanamide and ZnCl 2 / KCl (2g / 1g) salt mixture was mixed in a mortar and ground evenly. Subsequently, the uniformly ground slurry was coated on a cleaned nickel foam substrate, and then heat-treated at 700° C. for 2 hours in a nitrogen atmosphere. After heat treatment, wash with 0.5M hydrochloric acid aqueous solution, deionized water and absolute ethanol successively. After cleaning, the material was dried in a vacuum oven at 60° C. to collect graphitic carbon nanosheet (CNS) material.

[0052] Place the prepared graphite carbon nanosheets (CNS) at room temperature in a 20mM ferric nitrate solution and seal them, take them out after 24 hours, wash them with distilled water and absolute ethanol three times, and dry them to obtain graphene-based metals. Hydroxide (CNS@FeOOH).

[0053] The prepared graphene-based metal hydroxide (CNS@FeOOH) was calcined in a tube furnace under an ammonia atmosphere, and the temperature was raised t...

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Abstract

The invention discloses a preparation and application of a graphene based metal compound nano array material, and belongs to the technical field of preparation of functional nano materials. A carbon precursor and a metal salt mixture are ground and then coat a foam nickel substrate, the coated foam nickel substrate is subjected to heat treatment in an inert atmosphere, and a graphene array material is obtained by washing. The graphene based metal compound nano array material is obtained from the graphene array material by solution growth or electrochemical deposition and calcination and other ways. The nano array material prepared by the method has high electric conductivity, fast ion transfer channels, high active sites and other physical properties, and shows electricity storage performance of long service life and high capacity and excellent electrochemical catalytic activity and stability in energy storage and conversion and electrochemical catalysis reactions. The whole material preparation process is simple, no toxic products are generated in the reaction, and the preparation method has the advantages of low energy consumption, and green and environmental protection, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a large-scale preparation method of a graphene-based metal compound nano-array material that can be used as an energy storage material and an electrochemical catalytic material, and belongs to the technical field of preparation of functional nano-materials. Background technique [0002] With the increasingly prominent environmental and energy issues and the development of alternative clean energy, high-performance electrical storage devices have received widespread attention and become a research direction highlighted in my country's 13th Five-Year Plan. New energy storage materials and high-efficiency electrochemical catalytic materials have become important pillars to promote the development and application of high-performance energy storage devices. [0003] Today, the development of lithium batteries and hydrogen energy has gained a place in the market. Lithium batteries are now widely used in electric vehicles, mobile pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/75B01J23/755B01J27/24H01M4/62C25B11/06
CPCH01M4/625B01J23/745B01J23/75B01J23/755B01J27/24C25B11/075B01J35/33Y02E60/10
Inventor 朱纪欣张瑶黄维
Owner NANJING UNIV OF TECH
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