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A method and application of a nitrogen/sulfur co-doped hierarchical pore carbon material prepared from biomass-based protonated ionic liquid

A technology of protonating ions and ionic liquids, applied in the preparation/purification of carbon, hybrid capacitor electrodes, etc., can solve the problems of unstable molecular composition, cumbersome process, environmental pollution, etc., and achieve excellent temperature resistance, flexibility, and high cycle stability performance, the effect of high capacitance performance

Active Publication Date: 2020-05-26
HENAN UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of heteroatom-doped hierarchical pore carbon material carbon precursor and preparation technology in the prior art, due to the cumbersome process, high energy consumption, unstable molecular composition, and a large amount of environmental pollution, etc.

Method used

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  • A method and application of a nitrogen/sulfur co-doped hierarchical pore carbon material prepared from biomass-based protonated ionic liquid
  • A method and application of a nitrogen/sulfur co-doped hierarchical pore carbon material prepared from biomass-based protonated ionic liquid
  • A method and application of a nitrogen/sulfur co-doped hierarchical pore carbon material prepared from biomass-based protonated ionic liquid

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Embodiment 1

[0033] Preparation method of nitrogen / sulfur co-doped hierarchical porous carbon material

[0034] 10 mmol (mass 1.61 g) of chitosan was dissolved in 40 mL of 3% acetic acid by volume, and stirred for 30 minutes to dissolve completely. Under nitrogen protection and ice-water bath, slowly drop 6 mL of dilute sulfuric acid with a concentration of 1.7 mol / L into the completely dissolved solution. After stirring for 2 hours, vacuum drying at 60°C for 12 hours gave [Chit][HSO 4 ]. The molecular structural formula is as follows:

[0035]

[0036] Subsequently, the [Chit][HSO 4 ] with F127 and sodium lauryl sulfate according to the mass ratio of 1:0.88:0.088, after grinding evenly, move to the reaction kettle for curing at 160°C for 24 hours. Put the solidified sample in a tube furnace to heat up at 5°C per minute, heat up to 600°C and pyrolyze for 1 hour, then continue to heat up to 900°C for another 1 hour, and then cool to room temperature to obtain nitrogen / sulfur Co-dope...

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Abstract

The invention relates to a method for preparing a nitrogen / sulfur co-doped hierarchical porous carbon material by using a novel biomass protonated ionic liquid as a raw material and application, and belongs to the technical field of energy storage and conversion. The nitrogen / sulfur co-doped hierarchical porous carbon material can be simply and greenly prepared by the novel biomass protonated ionic liquid, the carbon material has different pore structures of micropores, mesopores and macropores, large specific surface area, high nitrogen / sulfur atom content, and the carbon material used as anelectrode material not only exhibits high capacitive performance and cycle stability, but also has excellent temperature resistance and flexibility characteristics.

Description

technical field [0001] The invention belongs to the technical field of energy storage and conversion, and specifically relates to a method and application of a nitrogen / sulfur co-doped hierarchical pore carbon material prepared by using a new type of biomass-based protonated ionic liquid as a raw material. Background technique [0002] Due to the different pore structures of micropore-mesopore-macropore, excellent stability, large surface area and high heteroatom content, heteroatom-doped hierarchical pore carbon materials have been used in various fields such as catalysis, adsorption, energy storage and conversion, etc. Shows great potential. However, the currently commonly used carbon precursors and preparation techniques are cumbersome, high energy consumption, unstable molecular composition, and a large amount of environmental pollution, which severely limits the development and application of carbon materials. Therefore, it is of great significance to select excellent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/08C01B32/05H01G11/24H01G11/32
CPCC01B32/05C08B37/003H01G11/24H01G11/32Y02E60/13
Inventor 周艳梅孙立郭美霞张成丽周华李莉屈浩楠
Owner HENAN UNIVERSITY