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High-activity electrode material and modifying method thereof

A kind of electrode material and high activity technology, applied in the field of electrochemistry, can solve the problems of infeasibility of industrial operation, high cost, complicated and difficult methods, etc., and achieve the goal of increasing electrochemical reaction activity, high current density and high specific surface area Effect

Active Publication Date: 2017-09-05
SHANGHAI QI JIE CARBON MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As disclosed in Patent No. 200910093955.5, carbon nanotubes are deposited on the surface of graphite felt by chemical vapor deposition. This method is complicated and difficult, and raw materials need to be processed in various ways before they can be processed in a chemical vapor deposition furnace. The cost is high , does not have practical feasibility for industrial operation

Method used

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  • High-activity electrode material and modifying method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] After the graphite felt is formed, it is treated using a phenolic resin as a binder.

[0047] To prepare the dispersion, put 1-200g of water-soluble phenolic resin and 1-100g of activated carbon into 1L of deionized water, and stir for 1-3 hours. A resin dispersion with a concentration gradient of both the phenolic resin and the activated carbon is formed. Cut the graphite felt into a regular square, and cut the side length according to the actual needs, here it is cut to 50*50mm 2 , weigh M0.

[0048] Such as figure 1 As shown, the activated carbon resin dispersion is poured into a container with high airtightness, the graphite felt 10 is put into the dispersion 20, and the sealing cap is closed.

[0049] Use a vacuum pump to vacuumize the above container, and the processing time is 1-3 hours.

[0050] Take out the treated graphite felt and dry it at 150°C for 2-5 hours.

[0051] The dried graphite felt is treated in a vacuum or an inert gas furnace at 700-900°C f...

Embodiment 2

[0055] In the carbon felt stage, physical methods are used for processing.

[0056] To prepare the water dispersion, put 1-100g of activated carbon into 1L of deionized water and stir on a stirrer for 1-3 hours to form a stable and uniform water dispersion.

[0057] Cut the graphite felt into a regular square, and cut the side length according to the actual needs, here cut to 50*50mm2, weigh M0.

[0058] Such as figure 2 As shown, the filter paper is placed in the Buchner funnel 40, the carbon felt 11 is placed on the filter paper, and the activated carbon water dispersion 50 is poured into the Buchner funnel, and the pouring amount is 100ml.

[0059] Use a vacuum pump to filter until all the liquid in the Buchner funnel is drained.

[0060] The treated carbon felt 11 is graphitized at 1500-3000° C. under vacuum or an inert gas environment.

Embodiment 3

[0062] In the carding stage, physical methods are used for processing.

[0063] To prepare the water dispersion, put 1-100g of activated carbon into 1L of deionized water and stir on a stirrer for 1-3 hours to form a stable and uniform water dispersion.

[0064] Take a certain amount of basic raw materials and put them into an opener for processing. During the processing, slowly add the activated carbon water dispersion in the above steps. The mass ratio of the basic raw material and the activated carbon water dispersion is controlled between 10:1-1:1.

[0065] The treated fiber material is needle-punched, carbonized and graphitized to obtain modified graphite felt.

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Abstract

The invention provides a high-activity electrode material, which is applied in the field of electrode materials for electrochemical reactions. The high-activity electrode material is prepared from an organic fiber material serving as a basic raw material by the following steps: carding the basic raw material; needling to form a pre-oxidized felt; calcining and carbonizing at a high temperature to form a carbon felt; calcining and graphitizing at a high temperature to form a graphite felt, wherein in the processes of carding the basic raw material, needling to form the pre-oxidized felt; calcining and carbonizing at the high temperature to form the carbon felt, and calcining and graphitizing at the high temperature to form the graphite felt, one of the processes is selected for activation treatment; the activation treatment refers to physical Van der Waals force adsorption or chemical grafting taking an organic resin as a bonding agent. The high-activity electrode material has the characteristics of high specific surface area, acid resistance and corrosion resistance; a resin product is cheap and easy to get, so that large-scale industrial production can be realized.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a surface modification of an electrode material for electrochemical reaction in the field of electrochemistry and a modification method thereof. Background technique [0002] An electrochemical cell is a chemical energy storage device that uses the mutual change between different valence states of ions to conduct electricity externally through electrons and internally through protons or ions to form a current. The electrode materials used in the field of electrochemistry are generally activated carbon materials, and the electrolytes used are generally divided into organic electrolytes and inorganic electrolytes. Both electrolytes generally have a certain degree of corrosion, so the electrode mat is required to have high corrosion resistance. Electrode material is one of the very important components in the field of electrochemistry, because its physical and chemical properties hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/96H01M4/90H01M8/18
CPCH01M4/9083H01M4/96H01M8/188Y02E60/50Y02P70/50
Inventor 申富强吴星
Owner SHANGHAI QI JIE CARBON MATERIALS
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