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

Preparation method of nanoporous gold/manganese dioxide composite electrode material

A nano-porous gold and manganese dioxide technology, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, can solve the problems of low mechanical stability, poor conductivity, and difficulty in reaching specific capacitance values, and achieve coating Uniform and controllable, good shape retention, good specific capacitance characteristics

Active Publication Date: 2020-06-02
NAT UNIV OF DEFENSE TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor conductivity and low mechanical stability of manganese dioxide, it is difficult to achieve a high specific capacitance value.

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
  • Preparation method of nanoporous gold/manganese dioxide composite electrode material
  • Preparation method of nanoporous gold/manganese dioxide composite electrode material
  • Preparation method of nanoporous gold/manganese dioxide composite electrode material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of nanoporous gold / manganese dioxide composite electrode material, comprising the following steps:

[0026] (1) Preparation of nanoporous gold film

[0027] Choose Au 35 Ag 65 Alloy film (that is, the atomic ratio is 7:13), the alloy film is cut to an appropriate size, and the alloy film is placed in a nitric acid solution with a concentration of 12M-16M (M is mol / L) at room temperature, and dealloyed by chemical methods 30-120 minutes, thereby making a nanoporous gold film with a nanoporous structure. The nanoporous gold thin film has different pore diameter ranges with the change of dealloying time and the concentration of dealloying corrosion solution, and the average pore diameter is usually in the range of 30nm-60nm, showing the hierarchy under different process conditions. The prepared nanoporous gold film was first washed with deionized water, and then washed with absolute ethanol, and then the clean nanoporous gold film was dried at room ...

Embodiment 1

[0031] A preparation method of nanoporous gold / manganese dioxide composite electrode material of the present invention, comprises the following steps:

[0032] (1) Preparation of nanoporous gold film: select Au with a thickness of 100nm 35 Ag 65 Alloy thin film (atomic ratio), cut it into 1×1cm 2 The alloy film is placed in a nitric acid solution with a concentration of 16M for dealloying treatment for 30 minutes at room temperature. After dealloying, a nanoporous gold film is obtained. The film was washed with deionized water for 30 minutes, replaced with deionized water and washed repeatedly for 4 times, then washed with absolute ethanol, cleaned and dried at room temperature for 12 hours for later use. The microscopic appearance of the obtained nanoporous gold film is as follows: figure 1 As shown, the average pore size of the nanoporous gold film is 30 nm.

[0033] (2) Preparation of nanoporous gold / manganese dioxide composite electrode material: put the dried nanoporou...

Embodiment 2

[0035] A preparation method of nanoporous gold / manganese dioxide composite electrode material of the present invention, comprises the following steps:

[0036] (1) Preparation of nanoporous gold film:

[0037] Use Au with a thickness of 100nm 35 Ag 65 Alloy film (atomic ratio), cut it into 2×1cm 2 Size, at room temperature, place the alloy film in a nitric acid solution with a concentration of 12M for dealloying treatment for 90 minutes. After dealloying, a nanoporous gold film is obtained. The film is washed with deionized water for 30 minutes, and the deionized water is replaced for repeated cleaning. 4 times, and then washed with absolute ethanol, dried at room temperature for 12 hours after cleaning, and the average pore size of the nanoporous gold film was 50 nm.

[0038] (2) Preparation of nanoporous gold / manganese dioxide composite electrode material: put the dried nanoporous gold film into the reaction chamber of the atomic layer deposition equipment, feed nitrogen ...

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
thicknessaaaaaaaaaa
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a nanoporous gold / manganese dioxide composite electrode material. The preparation method includes the following steps: (1) taking and de-alloying an Au35Ag65 alloy film, and preparing a nanoporous gold film; and (2) processing the nanoporous gold film through an atomic layer deposition method, taking Mn(thd)3 and ozone as a precursor, controlling thereaction temperature at 150-250 DEG C, carrying out Mn(thd)3 pulsing, N2 cleaning, O3 pulsing and N2 cleaning, repeating the deposition for 500-5000 cycles, and uniformly depositing manganese dioxideon the inner and outer surfaces of the nanoporous gold film to get a nanoporous gold / manganese dioxide composite electrode material. The composite electrode material of the invention has good specific capacitance characteristic, a controllable structure and stable performance.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials, and in particular relates to a preparation method of a nanoporous gold / manganese dioxide composite electrode material. Background technique [0002] Supercapacitor (Supercapacitor) is a new type of energy storage device, which has the characteristics of high energy storage density, high output power, wide operating temperature range, long cycle life, etc., and can be charged and discharged quickly, which can better store energy utilization and storage. High-performance electrodes are an important direction to improve the performance of supercapacitors. Metal oxide materials have high theoretical pseudocapacitive capacity and become ideal electrode materials for improving supercapacitive performance. As a typical material of base metal oxides, manganese dioxide has many advantages such as high theoretical specific capacity (1370F / g), low price, large quantity, easy ava...

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): H01G11/86H01G11/36H01G11/46
Inventor 余金山李吉周新贵王洪磊刘海山
Owner NAT UNIV OF DEFENSE 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