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Three-dimensional nano bead curtain shaped composite metal nitride/oxide and preparation method and application thereof

A composite metal and oxide technology, applied in the manufacture of hybrid/electric double layer capacitors, nanotechnology, nanotechnology, etc., to avoid the impact of capacitor performance, overcome low rate, and improve affinity.

Active Publication Date: 2018-02-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After searching, there is no report about the three-dimensional "nano bead curtain" composite metal nitrogen / oxide and its preparation method and its application in the preparation of capacitor electrode materials.

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  • Three-dimensional nano bead curtain shaped composite metal nitride/oxide and preparation method and application thereof
  • Three-dimensional nano bead curtain shaped composite metal nitride/oxide and preparation method and application thereof
  • Three-dimensional nano bead curtain shaped composite metal nitride/oxide and preparation method and application thereof

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Effect test

Embodiment 1

[0032] The preparation method of three-dimensional "nano-bead curtain" composite metal nitrogen / oxide, the steps are:

[0033] (1) The cobalt nitrate and nickel nitrate are mixed and dissolved in water at a molar ratio of 2:1, and the mixture is continuously stirred until the mixing is complete.

[0034] (2) Measure 40mL of the prepared mixed solution and place it in the electrolytic cell, and cut out 1×5cm 2 The foamed nickel is suspended in the mixed solution, and the infiltration area of ​​the foamed nickel is 1×1cm 2 . The circuit is connected in a three-electrode system, and a constant voltage electrochemical deposition method is adopted, the deposition voltage is -1V, and the deposition is 10 minutes. The deposited nickel foam is repeatedly washed with deionized water to remove surface attachments and attached ions. The cleaned foamed nickel is placed in a vacuum drying oven and dried at 50°C for 24 hours.

[0035] (3) Put the dried nickel foam in a quartz crucible, place it ...

Embodiment 2

[0041] (1) The cobalt nitrate and nickel nitrate are mixed and dissolved in water at a molar ratio of 1:1, and the mixture is continuously stirred until the mixing is complete.

[0042] (2) Measure 40mL of the prepared mixed solution and place it in the electrolytic cell, and cut out 1×4cm 2 The foamed nickel is suspended in the mixed solution, the infiltration area of ​​the foamed nickel is 1×2cm 2 . The circuit is connected in a three-electrode system, and a constant voltage electrochemical deposition method is adopted, the deposition voltage is -0.8V, and the deposition is 5 minutes. The deposited nickel foam is repeatedly washed with deionized water to remove surface attachments and attached ions. The cleaned nickel foam is placed in a vacuum drying oven and dried at 60°C for 20 hours.

[0043] (3) Put the dried nickel foam in a quartz crucible, and place it in a tube furnace in an argon atmosphere at a temperature of 2°C / min to 300°C, and keep it for 2 hours. The calcined ni...

Embodiment 3

[0045] (1) The cobalt nitrate and nickel nitrate are mixed and dissolved in water according to a molar ratio of 4:1, and are continuously stirred until the mixing is complete.

[0046] (2) Measure 50mL of the prepared mixed solution and place it in the electrolytic cell, and cut 1×8cm 2 The foamed nickel is suspended in the mixed solution, and the infiltration area of ​​the foamed nickel is 1×3cm 2 . The circuit was connected in a three-electrode system, and a constant voltage electrochemical deposition method was used, the deposition voltage was -1V, and the deposition was 15 minutes. The deposited nickel foam is repeatedly washed with deionized water to remove surface attachments and attached ions. The cleaned nickel foam is placed in a vacuum drying oven and dried at 80°C for 10 hours.

[0047] (3) Put the dried nickel foam in a quartz crucible, and place it in a tube furnace in an argon protective atmosphere at a temperature of 2°C / min to 350°C, and keep it for 3h. The calcin...

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Abstract

Te invention discloses a three-dimensional nano bead curtain shaped composite metal nitride / oxide, which is prepared by adopting a method of growing a composite metal oxide precursor at the surface bytaking a conductive support material as an electrode and a support and then forming a composite metal nitride / oxide loaded on the conductive support material through heat treatment and nitridation. The composite metal nitride / oxide is that composite metal nitride nanoparticles connected by composite metal oxide nanosheets form a three-dimensional nano bead curtain shape on the conductive supportmaterial, wherein the size of the composite metal oxide nanosheets is 100-500nm, the diameter of the composite metal nitride nanoparticles is 5-50nm, and the loading capacity of the composite metal nitride / oxide on the conductive support is 0.1-0.5mg / cm<2>. The operation process is simple, the low cost and the high capacitive performance enable the combination of the composite metal nitride / oxideto have wide application prospects in the aspect of energy storage.

Description

Technical field [0001] The invention relates to a three-dimensional "nano bead curtain" composite metal nitrogen / oxide and its preparation method and application in the preparation of capacitor electrode materials. Background technique [0002] In recent years, supercapacitors and electrochemical capacitors have attracted much attention due to their high energy density and power density. The key to achieving high energy density and power density largely depends on the selection and preparation of electrode materials. In addition to traditional electric double-layer capacitors, pseudo-capacitor capacitors are also attracting attention. Traditional pseudocapacitance capacitor electrode materials are mainly Mn, Ni, Co and other metal oxides, hydroxides or a mixture of the two. However, this type of electrode material has disadvantages such as poor rate performance and low capacitance performance due to problems such as conductivity. [0003] In order to improve the above shortcomin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/30H01G11/24H01G11/86B82Y30/00B82Y40/00
CPCY02E60/13H01G11/46B82Y30/00B82Y40/00H01G11/24H01G11/30H01G11/86
Inventor 刘宏谭华刘志贺王晓宁桑元华
Owner SHANDONG UNIV
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