A nitrogen-boron co-doped gelatin-based two-dimensional carbon sheet and its preparation method

A gelatin-based two-dimensional carbon sheet and co-doping technology, which is applied to electrical components, battery electrodes, circuits, etc., can solve the problems of unfavorable social sustainable development, large water consumption for cleaning materials, and increased production costs, and achieve simple equipment Easy to obtain, high cycle stability, green process effect

Active Publication Date: 2018-06-29
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reported methods all need to use a large amount of acid, alkali or metal ion solution as an activator, and consume a large amount of water to clean the material after the activation process
Therefore, this kind of production process greatly increases the production cost, and there are problems such as water pollution and waste, which is not conducive to the sustainable development of the whole society.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A nitrogen and boron co-doped gelatin-based two-dimensional carbon sheet, which uses gelatin and boric acid as raw materials, and is prepared according to the following steps: S1, hot water dissolves gelatin and boric acid:

[0027] Add 10 g of boric acid to 100 mL of deionized hot water, stir for 5 minutes, and then add 2 g of gelatin to obtain a raw material mixture. The raw material mixture is stirred at 60 °C for 4 hours to obtain a uniformly mixed solution.

[0028] S2, evaporation induces the assembly of gelatin and boric acid:

[0029] The resulting solution was evaporated to dryness at a constant temperature of 70°C to obtain an assembly mixture of gelatin and boric acid.

[0030] S3. Co-pyrolyze the assembly mixture of gelatin and boric acid under an inert atmosphere:

[0031] Place the resulting assembled mixture of gelatin and boric acid in a carbonization furnace, and heat it from room temperature to 800°C at a heating rate of 1°C / min under an argon atmosphere, and ma...

Embodiment 2

[0038] A nitrogen and boron co-doped gelatin-based two-dimensional carbon sheet, which uses gelatin and boric acid as raw materials, and is prepared according to the following steps: S1, hot water dissolves gelatin and boric acid:

[0039] Add 20 g of boric acid to 150 mL of deionized water, stir for 10 minutes, and then add 2 g of gelatin to obtain a raw material mixture. The raw material mixture is stirred at 60 °C for 8 hours to obtain a uniformly mixed solution.

[0040] S2, evaporation induces the assembly of gelatin and boric acid:

[0041] The resulting solution was evaporated to dryness at a constant temperature of 80°C to obtain an assembly mixture of gelatin and boric acid.

[0042] S3. Co-pyrolyze the assembly mixture of gelatin and boric acid under an inert atmosphere:

[0043] The resulting assembled mixture of gelatin and boric acid is placed in a carbonization furnace, heated from room temperature to 900°C at a temperature increase rate of 5°C / min under a nitrogen atmosph...

Embodiment 3

[0050] A nitrogen and boron co-doped gelatin-based two-dimensional carbon sheet, which uses gelatin and boric acid as raw materials and is prepared according to the following steps:

[0051] S1. Hot water dissolves gelatin and boric acid:

[0052] 20 g of boric acid was added to 200 mL of deionized water, stirred for 12 minutes, and then 2 g of gelatin was added to obtain a raw material mixture. The raw material mixture was stirred at 80 °C for 12 hours to obtain a uniformly mixed solution.

[0053] S2, evaporation induces the assembly of gelatin and boric acid:

[0054] The resulting solution was evaporated to dryness at a constant temperature of 95°C to obtain an assembly mixture of gelatin and boric acid.

[0055] S3. Co-pyrolyze the assembly mixture of gelatin and boric acid under an inert atmosphere:

[0056] The resulting assembled mixture of gelatin and boric acid is placed in a carbonization furnace, heated from room temperature to 1100°C at a temperature increase rate of 10°C / mi...

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Abstract

The invention relates to a boron / nitrogen co-doped gelatin-based two-dimensional carbon plate and a preparation method and application thereof. The preparation method comprises the following steps of: dissolving and mixing gelatin and boric acid which serve as raw materials, carrying out evaporation-induced assembly, co-pyrolysis and boiling water backflow to prepare the two-dimensional carbon plate; mixing the boron / nitrogen co-doped two-dimensional carbon plate, carbon black and polytetrafluoroethylene according to a proportion to prepare a carbon pole piece serving as a supercapacitor electrode piece; or mixing with the carbon black and polyvinylidene fluoride according to a proportion to prepare a slurry serving as an electrode piece of a button lithium ion battery. The obtained carbon plate has high content of nitrogen and boron, pore size distribution is concentrated, and the carbon plate is large in size and thin in thickness; such carbon plate has a series of advantages of high specific capacitance, high rate performance and the like when serving as the electrode materials of a supercapacitor and the lithium ion battery; and moreover, the electrode has high cycling stability. The preparation method has the advantages of simplicity and greenness in process, short consumed time and the like, and the device is simple and available.

Description

Technical field [0001] The present invention relates to the branch of inorganic non-metallic material science and technology of materials science-the field of carbon material science and technology and the field of supercapacitors and lithium-ion battery energy storage, in particular to a preparation using biomass as a carbon and nitrogen source and boric acid as a boron source. Method of co-doping gelatin-based two-dimensional carbon sheet with nitrogen and boron. Background technique [0002] Supercapacitors are a new type of energy storage device that combines the high rate characteristics of traditional capacitors and the high energy density of secondary batteries. It has the advantages of fast charging speed, long cycle life, wide operating temperature range, and low maintenance costs. A series of advantages of supercapacitors make it a widely used energy storage device, which is widely used as a backup power source, energy supply system and energy storage system for generat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01M4/587H01M4/1393
CPCY02E60/10Y02E60/13
Inventor 邱介山凌铮于畅王刚王治宇张梦迪王玉伟
Owner DALIAN UNIV OF TECH
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