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

Preparation method of biomass derived carbon material

A technology of biomass and carbon materials, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as low production efficiency and increased material production costs, and achieve the effects of reducing production costs and simplifying the preparation process

Active Publication Date: 2020-08-18
ZHEJIANG FORESTRY UNIVERSITY
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing methods of preparing activated carbon materials from wood, multi-step processes such as high-temperature carbonization, activation, and element doping are usually used to maximize the electrochemical performance of the prepared carbon materials, but the complex process increases The cost of material production is increased, and the production efficiency is very low

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of biomass-derived carbon materials

[0035] At room temperature, mix 5g of soybean protein isolate powder (Shansong Biotechnology, protein content ≥ 90%) with 5g of potassium hydroxide and 25g of water (mass ratio 1:1:5), and mechanically stir at 150r / min in a water bath at 85°C After 30 minutes, a colloidal semi-hydrolyzed product was formed, and then the colloidal semi-hydrolyzed product was dried in an oven at 100°C for 12 hours to obtain a dry hydrolyzed powder;

[0036] Mix 2 g of poplar wood powder with a particle size of 150 mesh, 1 g of dry hydrolyzed powder, and 2 g of zinc nitrate hexahydrate (mass ratio 1:0.5:1), stir at 60 r / min for 30 min, and transfer the resulting solid mixture into a tube furnace. Under the protection of nitrogen, the temperature was raised from room temperature to 900°C at a rate of 5°C / min, and high-temperature heat treatment was carried out at 900°C for 3 hours. During the heat treatment, zinc nitrate hexahydrate firs...

Embodiment 2

[0042] (1) Preparation of biomass-derived carbon materials

[0043] At room temperature, mix 5g of soybean protein isolate powder with 2.5g of sodium hydroxide and 20g of water (mass ratio 1:0.5:4), and mechanically stir at 200r / min in a 95°C water bath for 60min to form a colloidal semi-hydrolyzed product, and then the gelatinous The semi-hydrolyzed product was dried in an oven at 80°C for 24 hours to obtain a dry hydrolyzed powder;

[0044]Mix 2 g of poplar wood powder with a particle size of 150 mesh, 2 g of dry hydrolyzed powder, and 4 g of zinc nitrate hexahydrate (mass ratio 1:1:2), stir at 80 r / min for 20 min, and transfer the obtained solid mixture into a tube furnace. Under the protection of nitrogen, raise the temperature from room temperature to 1000°C at a rate of 3°C / min, and perform high-temperature heat treatment at 1000°C for 2 hours. During heat treatment, zinc nitrate hexahydrate first melts to form a liquid state and dissolves the dry hydrolyzed powder and i...

Embodiment 3

[0047] (1) Preparation of biomass-derived carbon materials

[0048] At room temperature, mix 5g of soybean protein isolate powder with 20g of potassium hydroxide and 40g of water (mass ratio 1:4:8), and mechanically stir at 300r / min in a 65°C water bath for 15min to form a colloidal semi-hydrolyzed product, and then the colloidal The semi-hydrolyzed product was dried in an oven at 90°C for 24 hours to obtain a dry hydrolyzed powder;

[0049] Mix 2 g of poplar wood powder with a particle size of 150 mesh, 4 g of dry hydrolyzed powder, and 6 g of zinc nitrate hexahydrate (mass ratio 1:2:3), stir at 100 r / min for 30 min, and transfer the resulting solid mixture into a tube furnace. Under the protection of nitrogen, the temperature was raised from room temperature to 800°C at a rate of 4°C / min, and high-temperature heat treatment was carried out at 800°C for 5 hours. During the heat treatment, zinc nitrate hexahydrate first melted to form a liquid state, and the dry hydrolyzed pow...

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

No PUM Login to View More

Abstract

A preparation method of a biomass derived carbon material comprises the steps: mixing soybean protein isolate powder with alkali and water at room temperature, heating the obtained mixture to 65-95 DEG C, stirring to form a colloidal semi-hydrolysis product, and drying to obtain dry hydrolysis powder; stirring and mixing wood powder with the obtained dry hydrolysis powder and zinc nitrate hexahydrate, heating the obtained mixed powder to 800-1000 DEG C under the protection of inert gas, carrying out heat treatment for 2-5 h, and then cooling to room temperature to obtain a black product; and mixing the obtained black product with hydrochloric acid, stirring, standing, filtering, washing a filter cake to be neutral, and drying to obtain the finished biomass derived carbon material. According to the method, the steps of carbonization, activation, element doping and the like can be simultaneously realized through a one-step high-temperature process, and the method has the characteristicsof simple preparation process and equipment and excellent finished product performance.

Description

technical field [0001] The invention relates to a method for preparing a biomass-derived carbon material, in particular to a method for preparing a carbon-based electrode material for a zinc ion supercapacitor using wood powder as a main raw material. Background technique [0002] Supercapacitor is a new type of energy storage device between traditional capacitors and batteries, which has the advantages of high energy density and high power density. In recent years, the rapid development of zinc ion hybrid supercapacitors has become a typical representative of high-performance supercapacitors due to the advantages of high capacity, low cost, and good safety. The important contribution of electric energy storage in zinc-ion hybrid supercapacitors comes from cathode materials represented by carbon materials. The development of low-cost and high-performance carbon-based cathode materials has become a key step towards the practical application of zinc-ion hybrid supercapacitors....

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): C01B32/348C01B32/318H01G11/34H01G11/44
CPCC01B32/318C01B32/348H01G11/34H01G11/44
Inventor 陈浩沈哲红楼高波
Owner ZHEJIANG FORESTRY UNIVERSITY