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Morphological control method for functional hydrothermal carbon

A hydrothermal carbon and functional technology, applied in the field of regulation, can solve the problems of wide particle size distribution and irregular morphology of hydrothermal carbon, and achieve the effects of good electrochemical performance, good electrochemical properties and long cycle life.

Inactive Publication Date: 2015-12-09
JILIN UNIV
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for regulating the morphology of functional hydrothermal charcoal in order to solve the problem of irregular morphology and wide particle size distribution of hydrothermal charcoal under low temperature conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: Glucose is mixed with the sulfuric acid solution of 40% by mass percent according to solid-liquid mass ratio 1:13, adds nonionic surfactant polyethylene glycol (molecular weight 800,6000) 4-28g / L, heats up to Dehydration and carbonization at 95°C for 6 hours, after washing, filtering, and drying at 120°C for 12 hours, spherical hydrothermal carbon with a particle size of 700-850nm, good dispersibility and narrow particle size distribution can be obtained.

Embodiment 2

[0014] Embodiment 2: the sulfuric acid solution that is 40% by mass percent is mixed with sucrose according to solid-liquid mass ratio 1:13, adds nonionic surfactant polyethylene glycol (molecular weight 800,6000) 4-28g / L, heats up to Dehydration and carbonization at 95°C for 6 hours, washing, filtration, and drying at 120°C for 12 hours can obtain spherical hydrothermal carbon with a particle size of 750-1000nm, good dispersibility, and narrow particle size distribution.

Embodiment 3

[0015] Embodiment 3: Add cationic surfactant cetyltrimethylammonium bromide 4-24g / L in the mixed solution of glucose and sulfuric acid solution in embodiment 1, obtain 400-600nm, the water with high degree of polymerization hot charcoal.

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Abstract

The invention discloses a morphological control method for functional hydrothermal carbon. The morphological control method includes the steps that after glucose or cane sugar is mixed with a sulfuric acid solution with the mass percent of 40% in the solid-liquid mass ratio of 1:13, morphological control agents are added, wherein the mass ratio of the morphological control agents to the glucose or the cane sugar is 1:25 to 7:25; the mixture is heated to 95 DEG C, dehydration carbonization is carried out for 6 h, washing and filtering are carried out, drying is carried out for 12 h under the condition of 120 DEG C, and the regular-morphology hydrothermal carbon is obtained. The morphological control method has the advantages that the problems that under the low temperature condition, morphology is irregular, and particle size distribution is wide are solved. Porous carbon prepared from the hydrothermal carbon with a phosphoric acid activating method shows quite good electrochemical performance and is high in mass transferring speed and long in service life, and the specific capacitance value ranges from 160 F / g to 210 F / g. The product shows the quite good electrochemical performance through further pore regulating and controlling, and has great development potential in the aspects of electrode materials and supercapacitors.

Description

technical field [0001] The invention relates to a method for regulating, in particular to a method for regulating the morphology of functional hydrothermal carbon. Background technique [0002] The synthesis and application of carbon materials has a long history, from the discovery of fullerenes to carbon nanotubes, carbon materials have become a hot field. Carbon materials have shown a very wide range of practical applications in the environment, catalysis, electronics, sensing technology, and biology. Among these materials, carbon materials with different morphologies have potential applications in many aspects, so carbon materials with unique structures have attracted extensive attention. Among them, spherical hydrothermal carbon is widely used in electrode materials, catalyst supports, magnetic nanoparticle capsules, templates for synthetic hollow materials, gas storage media, Drug carriers have potential applications. In recent years, spherical hydrothermal carbons w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 郭玉鹏韩雪邹博顾小雪张春鹏庞丽云曹礼媛王子忱
Owner JILIN UNIV
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