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

Carbon-silicon double-shell hollow structure composite microsphere and preparation method thereof and application

A technology of composite microspheres and double shells, applied in structural parts, active material electrodes, electrical components, etc., can solve problems such as unsuitable for industrial promotion, low utilization rate, and environmental pollution, so as to improve commercial value, reduce pollution, The effect of simple process method

Active Publication Date: 2019-10-22
SHANXI UNIV
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of solid waste fly ash in coal-fired power plants, which are difficult to use, low in utilization rate, and pollute the environment; silicon negative electrodes, materials and processes are not suitable for industrial promotion, and the cost is high. The present invention provides a carbon-silicon double-shell hollow structure composite microsphere negative electrode Preparation methods and applications of materials

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
  • Carbon-silicon double-shell hollow structure composite microsphere and preparation method thereof and application
  • Carbon-silicon double-shell hollow structure composite microsphere and preparation method thereof and application
  • Carbon-silicon double-shell hollow structure composite microsphere and preparation method thereof and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A carbon-silicon double-shell hollow structure composite microsphere is prepared through the following steps:

[0035] (1) After acid leaching fly ash and sulfuric acid at 120°C, filter and separate, the obtained solid is the acid leaching residue of fly ash; mix and stir the acid leaching residue of fly ash and sodium hydroxide solution to obtain silicic acid Sodium solution, centrifuged to remove the precipitate, to obtain the clear liquid, take 5mL of the clear liquid and weigh M1, then dry in an oven to obtain the solid M2, calculate the solid content of the clear liquid m=M2 / M1, take the surfactant according to the ratio of 0.5% m Add hexadecyltrimethylammonium bromide into the clear liquid, continue to stir and dissolve to obtain a clear solution, and then spray dry it at an inlet temperature of 140°C and an outlet temperature of 80°C to obtain a white powder A;

[0036] (2) Dissolve the white powder A in distilled water, add hydrochloric acid dropwise, adjust the...

Embodiment 2

[0040] A carbon-silicon double-shell hollow structure composite microsphere is prepared through the following steps:

[0041] (2) After acid leaching fly ash and hydrochloric acid at 140°C, filter and separate, the obtained solid is acid leaching residue of fly ash; mix and stir fly ash acid leaching residue and potassium hydroxide solution to obtain silicic acid Potassium solution, centrifuged to remove the precipitate, to obtain the clear liquid, take 5mL of the clear liquid and weigh M1, then dry in an oven to obtain the solid M2, calculate the solid content of the clear liquid m=M2 / M1, take the surfactant according to the ratio of 10% m Add sodium dodecylbenzenesulfonate polyvinylpyrrolidone into the clear liquid, continue to stir and dissolve to obtain a clear solution, and then spray dry it at an inlet temperature of 200°C and an outlet temperature of 120°C to obtain a white powder A;

[0042] (2) Dissolve white powder A in distilled water, add sulfuric acid dropwise, ad...

Embodiment 3

[0046] A carbon-silicon double-shell hollow structure composite microsphere is prepared through the following steps:

[0047] (3) After acid leaching fly ash and sulfuric acid or hydrochloric acid at 130°C, filter and separate, and the obtained solid is acid leaching residue of fly ash; mix and stir fly ash acid leaching residue and sodium hydroxide solution to obtain Sodium silicate solution, centrifuge to remove the precipitate, get the clear liquid, take 5mL clear liquid and weigh M1, then dry in an oven to obtain solid M2, calculate the clear liquid solid content m=M2 / M1, take the surface according to the ratio of 8% m Add the active agent polyethylene glycol into the clear liquid, continue to stir and dissolve to obtain a clear solution, and then spray dry it at an inlet temperature of 160°C and an outlet temperature of 100°C to obtain a white powder A;

[0048] (2) Dissolve the white powder A in distilled water, add hydrochloric acid dropwise, adjust the pH<4, filter wit...

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 sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of recycling and utilization of fly ash solid waste, and particularly relates to a carbon-silicon double-shell hollow structure composite microsphere and a preparation method thereof and application, mainly to solve the problems that the coal-fired power plant solid waste fly ash difficult to use, the utilization rate is low, the environment and a silicon negative electrode are polluted, materials and processes are not suitable for industrial promotion, the cost is high and the like. The carbon-silicon double-shell hollow structure composite microsphere is prepared by the following steps: (1) fly ash acid-leaching slag and an alkali solution are mixed to obtain a silicate solution, clear liquid is obtained by centrifuging, a surfactant is added to the clear liquid for continuous stirring and dissolving, a clear solution is obtained, and through spraying and drying, white powder A is obtained; (2) the white powder is washed to obtain white powder B; (3) the white powder B is taken for a thermite or magnesiothermic reduction reaction to obtain hollow silicon microspheres; and (4) the hollow silicon microspheres are subjected to carbon coating treatment, and thus, the carbon-silicon double-shell hollow structure composite microsphere is obtained.

Description

technical field [0001] The invention belongs to the field of recovery and utilization of fly ash solid waste, and in particular relates to a carbon-silicon double-shell hollow structure composite microsphere and a preparation method and application thereof. Background technique [0002] New energy vehicles are one of the strategic industries that carry the national new energy policy, and are also an important platform for promoting technological and social development. Pure electric vehicles powered by lithium-ion batteries are currently the mainstream form of new energy vehicles. In 2017, the total demand for lithium-ion battery cells has reached more than 160GWh, and the market size has reached more than 230 billion. However, the graphite negative electrode and lithium iron phosphate or ternary positive electrode materials currently used in lithium-ion batteries are close to the theoretical capacity, which makes it difficult for the energy density of traditional lithium-i...

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): H01M4/36H01M4/38H01M4/62H01M10/0525
CPCH01M4/366H01M4/386H01M4/625H01M10/0525H01M2004/021H01M2004/027Y02E60/10
Inventor 马灿良赵云
Owner SHANXI UNIV
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