Porous nanocarbon slice

A nano-carbon and flake technology, which is applied in the direction of carbon-silicon compound conductors, electrical components, battery electrodes, etc., can solve the problems of cumbersome process and unfavorable large-scale preparation, and achieve low cost, good conductivity and current collection effect, and suppress flying The effect of the shuttle effect

Inactive Publication Date: 2016-05-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method is cumbersome, requires the use of reducing dangerous gases, and is not conducive to large-scale preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1.15g zinc and 3.9g sucrose are mixed ball milled, the ball-to-material ratio is 10:1, the rotating speed is 300rpm, ball milled for 6h, the resulting mixture is sealed in a stainless steel autoclave in a glove box full of inert gas, and then the autoclave is pumped Vacuum to below 0.1MPa; heat the autoclave to 550°C with an electric furnace, react for 8 hours and then cool it down to room temperature naturally to obtain the reaction product. Take the loose part of the upper layer of the reaction product and ball mill it at a speed of 300rpm for 6 hours. First wash with dilute hydrochloric acid with a concentration of 0.1M until no bubbles are generated, then wash with deionized water until the pH is neutral, and dry at 100° C. for 10 h to obtain porous nano-carbon flakes.

[0033] The porous nano-carbon flakes prepared in the present embodiment are tested, and the results are as follows:

[0034] (1) Atomic force microscope test:

[0035] Test results such as figure ...

Embodiment 2

[0039] (1) 1.15g magnesium and 3.9g sucrose are mixed and ball-milled, the ball-to-material ratio is 10:1, and the rotating speed is 300rpm, ball milled for 6h, and the resulting mixture is sealed in a stainless steel autoclave in a glove box full of an inert gas, and the described The autoclave was evacuated to below 0.1MPa; the autoclave was heated to 550°C with an electric furnace, and after 8 hours of reaction, it was naturally cooled to room temperature to obtain the reaction product, and the loose part of the upper layer of the reaction product was ball milled at 300rpm for 6 hours. After ball milling, the obtained The material was first washed with dilute hydrochloric acid with a concentration of 0.1M until no bubbles were generated, then washed with deionized water until the pH was neutral, and dried at 100°C for 10 hours to obtain porous nanocarbon flakes.

[0040] The porous nano-carbon flakes prepared in the present embodiment are tested, and the results are as follo...

Embodiment 3

[0046] (1) 1.15g zinc and 3.9g glucose are mixed ball milled, the ball-to-material ratio is 10:1, the rotating speed is 300rpm, ball milled for 6h, the resulting mixture is sealed in a stainless steel autoclave in a glove box full of inert gas, and then the The autoclave was evacuated to below 0.1MPa; the autoclave was heated to 550°C with an electric furnace, and after 8 hours of reaction, it was naturally cooled to room temperature to obtain the reaction product, and the loose part of the upper layer of the reaction product was ball milled at a speed of 300rpm for 6 hours. The obtained material was first washed with dilute hydrochloric acid with a concentration of 0.1M until no bubbles were generated, then washed with deionized water until the pH was neutral, and dried at 100°C for 10 hours to obtain porous nanocarbon flakes.

[0047] The porous nano-carbon flakes prepared in the present embodiment are tested, and the results are as follows:

[0048] (1) Atomic force microsc...

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Abstract

The invention relates to a porous nanocarbon slice, and belongs to the technical field of a battery material. The carbon slice has abundant micropores and mesoporous, and adopts a three-dimensional communicating network-shaped structure with the thickness of less than or equal to 50nm; the preparation method comprises the steps of after performing mixed ball milling on a metal simple substance and a carbon source, enabling the metal simple substance and the carbon source to react in an oxygen-free anhydrous vacuum sealing environment at a temperature of 450-600 DEG C for 4-24h; taking the loosening part from the upper layer of the reaction product to be subjected to ball milling, then cleaning the loosening part by diluted hydrochloric acid until no bubbles are generated; then washing by clean water until the pH is neutral; and drying at a temperature of 80-120 DEG C for more than 6h to obtain the porous nanocarbon slice, wherein the metal simple substance is zinc and / or magnesium, and the carbon source is glucose and / or saccharose. The carbon slice can be used as the negative electrode of an ion battery, an electrode material for a supercapacitor, a conductive carbon material for an electrode, and the like, is especially suitable for being used as a framework for a lithium-sulfur battery positive electrode material, and is capable of restraining a shuttle flying effect to realize high conductivity of the positive electrode material and a good current collection effect; and in addition, the preparation method is simple, low in cost, environment-friendly, and the batch production of the porous nanocarbon slice can be realized.

Description

technical field [0001] The invention relates to a porous nano-carbon sheet, which belongs to the technical field of battery materials. Background technique [0002] With the continuous development of new energy materials and the increasing demand for energy materials and conductive carbon materials, it is of great practical significance to research and develop carbon materials with low price and high performance. Due to their good electronic conductivity and mechanical properties, carbon materials are widely used as ideal functional materials. In addition, carbon materials also have the characteristics of strong moldability and a wide variety of synthesis processes. [0003] With the continuous development of electronic devices and mobile devices, people put forward higher requirements for their energy storage. The demand for carbon materials in the fields of supercapacitors, electrode materials, and catalysis continues to increase, and more stringent requirements are plac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/36H01G11/26H01M4/133H01B1/04
CPCH01B1/04H01G11/26H01G11/36H01M4/133Y02E60/10Y02E60/13
Inventor 吴锋陈人杰叶玉胜钱骥赵圆圆赵腾李丽
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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