Method for preparing cotton-based porous biomass carbon

A technology of biomass carbon and cotton, applied in carbon preparation/purification, active material electrodes, electrochemical generators, etc., can solve the problems of low initial charge and discharge efficiency, poor long-term cycle performance, etc., and achieve excellent electrochemical performance , improve the utilization rate, and facilitate the effect of infiltration

Pending Publication Date: 2019-08-23
JIANGSU UNIV OF SCI & TECH +1
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SIB anode materials currently have shortcomings such as low initial charge and discharge efficiency and poor long-term cycle

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
  • Method for preparing cotton-based porous biomass carbon
  • Method for preparing cotton-based porous biomass carbon
  • Method for preparing cotton-based porous biomass carbon

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] 1) Take 0.5 g of cotton, wash it with distilled water, and dry it. In the drying, the temperature is raised at a heating rate of 1 °C / min, and then at a heating rate of 4 °C / min. The temperature is raised to 60 °C and then dried at a constant temperature to obtain Product A;

[0032] 2) Mix product A and zinc chloride at a mass ratio of 1:3 and grind in a mortar for 30 min to obtain product B;

[0033] 3) Spread the product B in a white alumina porcelain boat, place it in a tube furnace with a nitrogen atmosphere and raise the temperature to 1000 °C at a heating rate of 2 °C / min, keep it for 2 hours, and obtain the product C after natural cooling;

[0034] 4) Soak product C in 50ml of 2mol / L hydrochloric acid solution at 60°C for 24 hours to obtain product D;

[0035] 5) The product D was repeatedly washed with distilled water until pH = 7, and dried at 60°C to obtain a cotton-based porous biomass carbon material.

[0036] After testing, the specif...

Example Embodiment

[0037] Example 2

[0038] 1) Take 0.5 g of cotton, wash it with distilled water, and dry it. In the drying process, the temperature is raised at a heating rate of 2 °C / min, and then at a heating rate of 5 °C / min. The temperature is raised to 70 °C and then dried at a constant temperature to obtain Product A;

[0039] 2) Mix product A and zinc chloride at a mass ratio of 1:4 and grind in a mortar for 30 minutes to obtain product B;

[0040] 3) Spread the product B in a white alumina porcelain boat, place it in a tube furnace with a nitrogen atmosphere and raise the temperature to 1000 °C at a heating rate of 2 °C / min, keep it for 2 hours, and obtain the product C after natural cooling;

[0041] 4) Soak product C in 50ml of 2mol / L hydrochloric acid solution at 60°C for 24 hours to obtain product D;

[0042] 5) The product D was repeatedly washed with distilled water until pH = 7, and dried at 60°C to obtain a cotton-based porous biomass carbon material (SEM image shown in fig...

Example Embodiment

[0044] Example 3

[0045] 1) Take 0.5 g of cotton, wash it with distilled water, and dry it. In the drying process, the temperature is raised at a rate of 3 °C / min, and then at a rate of 6 °C / min. The temperature is raised to 80 °C and then dried at a constant temperature to obtain Product A;

[0046] 2) Mix product A and zinc chloride at a mass ratio of 1:5 and grind in a mortar for 30 minutes to obtain product B;

[0047] 3) Spread the product B in a white alumina porcelain boat, place it in a tube furnace with a nitrogen atmosphere and raise the temperature to 1000 °C at a heating rate of 2 °C / min, keep it for 2 hours, and obtain the product C after natural cooling;

[0048] 4) Soak product C in 50ml of 2mol / L hydrochloric acid solution at 60°C for 24 hours to obtain product D;

[0049] 5) The product D was repeatedly washed with distilled water until pH = 7, and dried at 60°C to obtain a cotton-based porous biomass carbon material.

[0050] After testing, the specific sur...

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
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for preparing cotton-based porous biomass carbon. The method comprises the following steps: (1) taking a certain weight part of cotton, and washing and drying the cotton to obtain a product A; (2) mixing the product A with metal chloride according to a certain mass ratio, and grinding the obtained mixture to obtain a product B; (3) spreading the product B in an alumina porcelain boat, placing the alumina porcelain boat in a tubular furnace with an inert atmosphere, raising the temperature to 800-1300 DEG C at a certain heating rate, and carrying out high-temperature carbonization to obtain a product C; (4) immersing the product C in a hydrochloric acid solution to obtain a product D; and (5) repeatedly washing the product D with water until the pH value is7, and drying the washed product D to obtain the cotton-based porous biomass carbon material. The cotton used as the raw material and the metal chloride are ground to achieve the purpose of forming pores, and the porous biomass carbon with a large specific surface area is prepared by regulating the mass ratio of the cotton to the metal chloride and controlling the appropriate calcination temperature.

Description

technical field [0001] The invention relates to a preparation method of a negative electrode material of a sodium ion battery, in particular to a preparation method of cotton-based porous biomass carbon. Background technique [0002] The concept of sodium-ion batteries (SIBs) was proposed in the 1970-1980s, in parallel with lithium-ion batteries (LIBs). Subsequently, LIB was successfully commercialized by Sony in 1991, and then extensive research was conducted to develop LIB. However, little research has been done on SIBs and has even been shelved for three decades, so much so that research on sodium intercalation materials for energy storage has all but disappeared. Recently, the booming development of numerous electrical devices involving various consumer electronics, power tools, and electric vehicles has led to a large demand for LIBs, which may be hindered by limited lithium resource reserves (20 ppm in the Earth's cluster). Given this, the researchers again focused o...

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): C01B32/05H01M10/054H01M4/583
CPCC01B32/05H01M4/583H01M10/054H01M2004/027Y02E60/10
Inventor 徐明航杨宏训赵象晨马娇娇张俊豪袁爱华
Owner JIANGSU UNIV OF SCI & TECH
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