Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and Application of a Three-Dimensional Multistage Sulfur-Cobalt-Nickel/Phosphorus-Cobalt-Nickel/Nickel Foam Core-Shell Composite Electrode Material

A composite electrode and composite material technology, applied in the field of electrode material preparation, can solve the problems of structural collapse, poor rate performance and cycle performance, and unstable electrode material structure, and achieve high specific capacitance, short ion transmission distance, and excellent rate. Effects of performance and cycle performance

Inactive Publication Date: 2018-12-14
NORTHWEST UNIV
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the structure of existing electrode materials is unstable, and the structure is prone to collapse in the high-current charge-discharge test and long-cycle test, resulting in poor rate performance and cycle performance. Preparation method and application of sulfur-cobalt-nickel / phosphorus-cobalt-nickel / nickel foam core-shell composite electrode material

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 and Application of a Three-Dimensional Multistage Sulfur-Cobalt-Nickel/Phosphorus-Cobalt-Nickel/Nickel Foam Core-Shell Composite Electrode Material
  • Preparation method and Application of a Three-Dimensional Multistage Sulfur-Cobalt-Nickel/Phosphorus-Cobalt-Nickel/Nickel Foam Core-Shell Composite Electrode Material
  • Preparation method and Application of a Three-Dimensional Multistage Sulfur-Cobalt-Nickel/Phosphorus-Cobalt-Nickel/Nickel Foam Core-Shell Composite Electrode Material

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0049] Embodiment 1: This embodiment is a preparation method of a three-dimensional multi-level sulfur-cobalt-nickel / phosphorus-cobalt-nickel / nickel foam core-shell composite electrode material, which is completed according to the following steps:

[0050] 1. Preparation of cobalt-nickel precursor / nickel foam material:

[0051] ①. Immerse the nickel foam in hydrochloric acid with a mass fraction of 20% to 30%, and then ultrasonicate for 10min to 20min at an ultrasonic power of 200W to 400W. Ultrasonic for 10min~20min, take it out, and then dry it at 60℃~70℃ for 10h~12h to get nickel foam with impurities and nickel oxide removed;

[0052] ②. Add cobalt chloride hexahydrate, nickel chloride hexahydrate and urea into deionized water, stir evenly to obtain a uniform and transparent solution; transfer the uniform and transparent solution to a hydrothermal reaction kettle, and then soak nickel foam into In a uniform and transparent solution, seal the hydrothermal reaction kettle an...

specific Embodiment approach 2

[0075] Embodiment 2: The differences between this embodiment and Embodiment 1 are: the nickel foam described in step ① has a thickness of 0.5 mm to 2 mm, and a pore diameter of 0.2 mm to 0.6 mm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0076] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the nickel foam described in step ① has a length of 2 cm to 4 cm and a width of 1 cm to 2 cm. Other steps are the same as those in Embodiment 1 or 2.

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
current densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method and application of a three-dimensional multistage sulfur-cobalt-nickel / phosphorus-cobalt-nickel / nickel foam core-shell composite electrode material, and relates to a preparation method and application of an electrode material. The invention aims to solve the problem that the structure of the existing electrode material is unstable, and the structure iseasy to collapse in the large current charge-discharge test and the long cycle test, which leads to poor rate performance and cycle performance. The method includes the following steps: 1. preparation of a cobalt-Nickel precursor / nickel foam material; 2, preparation of a sulfur-cobalt-nickel / nickel foam material; 3, preparation of a cobalt-Nickel precursor / sulphur-cobalt-nickel / nickel foam composite material; and 4. phosphating reaction to obtain a three-dimensional multi-stage sulfur-cobalt-nickel / phosphorus-cobalt-nickel / nickel foam core-shell composite electrode material. The three-dimensional multistage sulfur-cobalt-nickel / phosphorus-cobalt-nickel / nickel foam core-shell composite electrode material is used as the electrode material of a supercapacitor. The invention is suitable for preparing a three-dimensional multi-stage sulfur-cobalt-nickel / phosphorus-cobalt-nickel / nickel foam core-shell composite electrode material.

Description

technical field [0001] The invention relates to a preparation method and application of an electrode material. Background technique [0002] As a new type of electrochemical energy storage element, supercapacitor has the advantages of high power density, long cycle life, fast charging speed, wide operating temperature range, and environmental protection, so it has broad application prospects in many energy storage fields. As we all know, electrode materials are the key to supercapacitors, which determine the main performance indicators of capacitors, such as energy density, power density, and cycle stability. Therefore, the preparation and synthesis of electrode materials with excellent performance has become the core topic of supercapacitor research. At present, there are two main methods to improve the electrochemical performance of capacitors: (1) select metal compound materials with higher theoretical specific capacitance values; (2) rationally design and optimize the el...

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 Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30
CPCH01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 李渭龙畅新维何密刘迎鸿任兆玉
Owner NORTHWEST UNIV