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

Ytterbium oxide@C composite double-shell hollow sphere material and preparation method thereof

A double-shell, ytterbium oxide technology, applied in the field of electrodes, can solve the problems of volume expansion effect, poor cycle performance, limited use and promotion, etc.

Active Publication Date: 2021-04-30
WUHAN INSTITUTE OF TECHNOLOGY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal oxide materials are prone to volume expansion effects during electrochemical testing, resulting in poor cycle performance.
Due to the rigid conjugated double bond structure on the molecular chain and the strong Van der Waals force between the molecules, the conductive polymer material used for the electrode of the supercapacitor usually does not melt or dissolve, and its processing performance is poor, which limits its use and promotion.

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
  • Ytterbium oxide@C composite double-shell hollow sphere material and preparation method thereof
  • Ytterbium oxide@C composite double-shell hollow sphere material and preparation method thereof
  • Ytterbium oxide@C composite double-shell hollow sphere material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An ytterbium oxide@C composite double-shell hollow sphere material, the preparation method of which comprises the following steps:

[0031] 1. Preparation of Silica Microspheres

[0032] Take 6mL of concentrated ammonia solution with a mass fraction of 28% and 10mL of deionized water into a 250mL three-necked flask, then add 74mL of absolute ethanol, mix ultrasonically for 30min, slowly drop in 6mL of tetraethyl orthosilicate at room temperature, and continue magnetic stirring for 6h Obtain a milky white solution, stop the reaction, centrifuge and wash the obtained product three times with absolute ethanol and deionized water, and dry at 60°C to obtain white powdery silica microspheres;

[0033] 2. Preparation of ytterbium oxide@C composite double-shell hollow sphere materials

[0034] (1) Select silica microspheres as a template, and ultrasonically treat a mixture of 0.2 g of silica microspheres and 120 mL of deionized water for 60 minutes to obtain a uniform dispersi...

Embodiment 2

[0046] An ytterbium oxide@C composite double-shell hollow sphere material, the preparation method of which comprises the following steps:

[0047] 1. Preparation of Silica Microspheres

[0048] Take 6mL of concentrated ammonia solution with a mass fraction of 28% and 10mL of deionized water into a 250mL three-necked flask, then add 74mL of absolute ethanol, mix ultrasonically for 30min, slowly drop in 6mL of tetraethyl orthosilicate at room temperature, and continue magnetic stirring for 6h Obtain a milky white solution, stop the reaction, centrifuge and wash the obtained product three times with absolute ethanol and deionized water, and dry at 60°C to obtain white powdery silica microspheres;

[0049] 2. Preparation of ytterbium oxide@C composite double-shell hollow sphere materials

[0050] (1) Select silica microspheres as a template, and ultrasonically treat a mixture of 0.2 g of silica microspheres and 120 mL of deionized water for 60 minutes to obtain a uniform dispersi...

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
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to an ytterbium oxide@C composite double-shell hollow sphere material and a preparation method thereof, and the preparation method comprises the following steps: 1) taking silicon dioxide microspheres as a template, and carrying out ultrasonic treatment on a mixed solution of the silicon dioxide microspheres and deionized water to obtain a uniform silicon dioxide microsphere dispersion liquid; 2) under magnetic stirring, adding a carbon source into the silicon dioxide microsphere dispersion liquid, uniformly stirring and dispersing to obtain a mixed liquid, slowly adding an ytterbium source into the mixed liquid, continuously stirring uniformly, adding ammonium fluoride, uniformly stirring, pouring the mixed solution into a hydrothermal reaction kettle and carrying out hydrothermal reaction, and after the reaction is finished, washing and drying the obtained product, and calcining to obtain the ytterbium oxide@C composite double-shell hollow sphere material. The ytterbium oxide@C composite double-shell hollow sphere material provided by the invention is uniform in particle size, and an electrode material prepared from the ytterbium@C composite double-shell hollow sphere material has excellent electrochemical performance.

Description

technical field [0001] The invention belongs to the technical field of electrodes characterized by the composition or structural characteristics of materials in electrodes, and specifically relates to an ytterbium oxide@C composite double-shell hollow sphere material and a preparation method thereof. Background technique [0002] With the development of industrialization, environmental problems and energy crises have become increasingly prominent. Researchers from all over the world are working on the development and development of energy conversion and energy storage devices for a series of new energy materials such as solar cells, supercapacitors and lithium batteries. For production work, it is expected to obtain a relatively ideal environment-friendly, safe, economically feasible battery with high power density, high energy density, and long cycle life. During the development and production of supercapacitors, the development of high-performance electrode materials is th...

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): H01G11/24H01G11/32H01G11/46H01G11/86
CPCH01G11/24H01G11/32H01G11/46H01G11/86Y02E60/13
Inventor 江学良彭子童姚楚朱雯雯游峰徐稳
Owner WUHAN INSTITUTE OF TECHNOLOGY