Nano sponge carbon composite Cu2O and Cu flexible electrode material and preparation method thereof

A flexible electrode and nano-sponge technology, which is applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, battery electrodes, etc., can solve the problem of the combination of active materials and current collectors affecting the stability of electrode functions and affecting the electrochemical performance of materials, etc. problem, achieve good interface integrity, eliminate adverse effects, and achieve high specific capacitance

Inactive Publication Date: 2019-05-03
UNIV OF ELECTRONIC SCI & TECH OF CHINA +1
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method still follows the construction method of the traditional flexible electrode. Simply combining ideal materials together as a flexible coating cannot completely guarantee that the substances in the flexible coating will fall off under the action of the e

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
  • Nano sponge carbon composite Cu2O and Cu flexible electrode material and preparation method thereof
  • Nano sponge carbon composite Cu2O and Cu flexible electrode material and preparation method thereof
  • Nano sponge carbon composite Cu2O and Cu flexible electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1:

[0035] This embodiment improves a method for preparing a nano-sponge carbon composite Cu2O and Cu flexible electrode material, which specifically includes the following steps:

[0036] (1) A piece of melamine nanosponge with a size of 10×10×30 cm was carbonized at 500°C for 3 hours in an argon atmosphere to obtain a flexible porous carbon material for use;

[0037] (2) The flexible porous carbon material obtained in step (1) is soaked in a mixed acid solution formed by concentrated nitric acid and concentrated sulfuric acid at 80°C for 2 hours for surface hydroxylation treatment. The mixed acid solution contains concentrated nitric acid and concentrated sulfuric acid. The volume ratio of sulfuric acid is 3:1, and then the flexible porous carbon material with surface hydroxylation is washed and dried for use.

[0038] (3) Dissolve 3.0 g of copper acetate in 50 ml of deionized water, adjust the pH to 7, and ultrasonicate in an ice bath for 30 minutes to obtain a copp...

Example Embodiment

[0041] Example 2:

[0042] The steps of this embodiment are basically the same as those of embodiment 1, except that the temperature of the hydrothermal reaction in step 5 is changed to 220°C, and the time is changed to 18h.

Example Embodiment

[0043] Example 3:

[0044] The steps of this embodiment are basically the same as those of embodiment 1, except that the copper source in step 3 is changed to copper chloride.

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
Apertureaaaaaaaaaa
Login to view more

Abstract

A nano sponge carbon composite Cu2O and Cu flexible electrode material and a preparation method thereof belong to the technical field of electrode materials. A flexible electrode utilizes a three-dimensional network formed by interweaving with micron-sized carbon fibers and having communicating holes as a skeleton, Cu2O and Cu are grown in the skeleton, and the Cu communicates with a pore networkstructure between the carbon fibers. The three-dimensional network skeleton as a whole is easy to recover under the action of external force, macroscopically present as high flexibility, thus can be directly used as an electrode; and the Cu communicates with broken carbon fibers to form a conductive path, and the overall electrical conductivity of the material can be improved. By utilization of the cladding effect of a porous carbon material formed by carbonization of melamine nano sponge to the Cu and the Cu2O, the specific surface area of the material is effectively increased, and at the same time, a volume change of the Cu2O during a charge and discharge process can also be inhibited, and the energy storage performance of devices is significantly improved.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, in particular to a nano-sponge carbon composite Cu2O and Cu flexible electrode material and a preparation method thereof. Background technique [0002] Due to the Faraday quasi-capacitance generated at the electrode / electrolyte interface, metal oxides can have a capacity of 10 to 100 times that of traditional carbon material electrodes. At present, there are endless reports of transition metal oxides as electrode materials for supercapacitors. Among them, copper-based oxides The advantages of low cost, environmental friendliness, and excellent electrochemical performance make it a very promising electrode material for supercapacitor and electrochemical battery applications. [0003] Cuprous oxide (Cu 2 O) As a typical semiconductor, it also has a low band gap (1.2eV) and a large theoretical capacity (375mAhg -1 ), high safety performance and other advantages, there have been many re...

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
IPC IPC(8): H01G11/24H01G11/30H01G11/36H01G11/46H01G11/86H01M4/36H01M4/48H01M4/62H01M10/0525B82Y30/00B82Y40/00
CPCY02E60/10
Inventor 廖家轩吴孟强徐自强巩峰宋尧琛马云飞李湜
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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