Preparation and application of amorphous TiO2 thin-layer coated three-dimensional carbon network loaded SnO2 nano-particle composite material

A nanoparticle and network-loaded technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of large volume change, slow ion transmission rate, poor conductivity, etc., and achieve material The effect of uniform structure, excellent shape and low cost

Inactive Publication Date: 2018-03-06
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its practical application is limited by its own poor conductivity, slow ion transport rate, and large volume change during sodium storage.

Method used

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  • Preparation and application of amorphous TiO2 thin-layer coated three-dimensional carbon network loaded SnO2 nano-particle composite material
  • Preparation and application of amorphous TiO2 thin-layer coated three-dimensional carbon network loaded SnO2 nano-particle composite material
  • Preparation and application of amorphous TiO2 thin-layer coated three-dimensional carbon network loaded SnO2 nano-particle composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 30g of sodium chloride, 1.80g of tin tetrachloride pentahydrate and 3.60g of citric acid, add 200mL of deionized water to prepare a mixed solution; use the spray drying method to obtain the precursor powder. Take 10g of precursor powder and spread it in the ark, and place the ark stably in the constant temperature zone of the high-temperature tube furnace. Ar is used as a protective atmosphere, and the temperature in the furnace is raised to 600° C. at a heating rate of 10° C. / min, and kept for 2 hours to complete the calcination of the material. Take out the powder and remove the NaCl template with deionized water to obtain a three-dimensional carbon network loaded SnO 2 Nanoparticle composites. Take 0.1g three-dimensional carbon network loaded SnO 2 The nanoparticle composite material powder was dispersed in 100 mL of absolute ethanol to obtain a dispersion liquid, and then 0.4 mL of concentrated ammonia water was added dropwise to the dispersion liquid, and s...

Embodiment 2

[0027] Weigh 30g of sodium chloride, 1.80g of tin tetrachloride pentahydrate and 3.60g of citric acid, add 200mL of deionized water to prepare a mixed solution; use the spray drying method to obtain the precursor powder. Take 10g of precursor powder and spread it in the ark, and place the ark stably in the constant temperature zone of the high-temperature tube furnace. Ar is used as a protective atmosphere, and the temperature in the furnace is raised to 600° C. at a heating rate of 10° C. / min, and kept for 2 hours to complete the calcination of the material. Take out the powder and remove the NaCl template with deionized water to obtain a three-dimensional carbon network loaded SnO 2 Nanoparticle composites. Take 0.1g three-dimensional carbon network loaded SnO 2 The nanoparticle composite material powder was dispersed in 100 mL of absolute ethanol to obtain a dispersion liquid, and then 0.4 mL of concentrated ammonia water was added dropwise to the dispersion liquid, and sti...

Embodiment 3

[0030] Weigh 30g of sodium chloride, 1.80g of tin tetrachloride pentahydrate and 3.60g of citric acid, add 200mL of deionized water to prepare a mixed solution; use the spray drying method to obtain the precursor powder. Take 10g of precursor powder and spread it in the ark, and place the ark stably in the constant temperature zone of the high-temperature tube furnace. Ar is used as a protective atmosphere, and the temperature in the furnace is raised to 600° C. at a heating rate of 10° C. / min, and kept for 2 hours to complete the calcination of the material. Take out the powder and remove the NaCl template with deionized water to obtain a three-dimensional carbon network loaded SnO 2 Nanoparticle composites. Take 0.1g three-dimensional carbon network loaded SnO 2 The nanoparticle composite material powder was dispersed in 100 mL of absolute ethanol to obtain a dispersion liquid, and then 0.4 mL of concentrated ammonia water was added dropwise to the dispersion liquid, and s...

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Abstract

The invention relates to an amorphous TiO2 thin-layer coated three-dimensional carbon network loaded SnO2 nano-particle composite material, which is characterized in that SnO2 nano-particles with a size of less than 10nm are uniformly loaded on a three-dimensional carbon network to form a sandwich structure with an amorphous TiO2 layer coated on the surface of a carbon layer at the same time. Theinvention further provides a preparation method of the material.

Description

technical field [0001] The present invention relates to a kind of amorphous TiO 2 Thin layer coated three-dimensional carbon network loaded SnO 2 The preparation and application of nanoparticle composite materials belong to the field of electrode materials for sodium ion secondary batteries. Background technique [0002] Since the 21st century, the economies of all countries in the world have developed rapidly, and due to the high dependence of today's society on fossil energy (coal, oil, natural gas, etc.), the fossil energy is being exhausted day by day, and mankind will face an unprecedented energy crisis. On the other hand, with the massive consumption of fossil energy, a large amount of carbon dioxide will be released and a large amount of harmful gas and particle pollutants will be produced. The production of these substances will cause serious air pollution and climate change. Facing the increasingly urgent energy crisis and environmental problems, human society urg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/583H01M10/054B82Y30/00
CPCB82Y30/00H01M4/366H01M4/48H01M4/583H01M10/054Y02E60/10
Inventor 何春年翟朋博赵乃勤师春生刘恩佐李家俊何芳马丽颖
Owner TIANJIN UNIV
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