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Production method of active carbon of direct carbon conversion fuel cell

A fuel cell and activated carbon technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of high ash content, poor electrical conductivity, and low reactivity, and achieve low ash content, good electrical conductivity, and favorable electrical conductivity Effect

Inactive Publication Date: 2010-07-14
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphite has good electrical conductivity, with zero ash content, but low reactivity; activated carbon is a porous carbon material with developed pore structure and large specific surface area prepared from biological organic matter, and has high specific surface area and porosity. Developed, internal structure, high reactivity, but high ash content, and poor electrical conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) KOH and K 2 CO 3 Prepare composite activator according to 1:1, then weigh composite activator and oak carbonization material according to mass ratio 4:1, add distilled water and mix evenly, impregnate at room temperature for 12h, then at 120°C temperature, under 150ml / min nitrogen dry. The dried mixture was placed in a reactor under a nitrogen flow for activation. The activation temperature was 800° C. and the activation time was 60 min. After the activation was completed, it was cooled to room temperature. Finally, the activated carbon was repeatedly washed and filtered with distilled water until the filtrate was neutral, dried under nitrogen protection at 120°C, collected and set aside.

[0018] (2) According to 2% loading Ni relative to the weight of activated carbon, add distilled water to the mixture and stir evenly, and dry under the protection of nitrogen. The dried raw materials were put into the reactor, heated to 900°C at a heating rate of 5°C / min and a...

Embodiment 2

[0022] (1) KOH and K 2 CO 3 Prepare composite activator according to 1:1, then weigh composite activator and oak carbonized material according to the mass ratio of 3:1, add distilled water and mix evenly, impregnate at room temperature for 12h, and then at a temperature of 120°C, under nitrogen gas of 150ml / min dry. The dried mixture was placed in a reactor under a nitrogen flow for activation. The activation temperature was 800° C. and the activation time was 60 min. After the activation was completed, it was cooled to room temperature. Finally, the activated carbon was repeatedly washed and filtered with distilled water until the filtrate was neutral, dried under nitrogen protection at 120°C, collected and set aside.

[0023] (2) According to 2% loading Ni relative to the weight of activated carbon, add distilled water to the mixture and stir evenly, and dry under the protection of nitrogen. The dried raw materials were put into the reactor, heated to 900°C at a heating r...

Embodiment 3

[0027] (1) Weigh K according to the mass ratio of 1:1 2 CO 3 Add distilled water and mix well with oak charcoal material, impregnate at room temperature for 12h, and then dry at 120°C and 150ml / min nitrogen. The dried mixture was placed in a reactor under a nitrogen flow for activation. The activation temperature was 900° C. and the activation time was 120 min. After the activation was completed, it was cooled to room temperature. Finally, the activated carbon was repeatedly washed and filtered with distilled water until the filtrate was neutral, dried under nitrogen protection at 120°C, collected and set aside.

[0028] (2) According to 5% loading Ni relative to the weight of activated carbon, add distilled water to the mixture and stir evenly, and dry under the protection of nitrogen. The dried raw materials were put into the reactor, heated to 900°C at a heating rate of 5°C / min and a nitrogen flow rate of 100ml / min, kept for 120min, and then cooled naturally.

[0029] (3...

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PUM

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Abstract

The invention discloses a production method of active carbon of a direct carbon conversion fuel cell, which mainly comprises the steps of: producing carbonization material by taking biomass such as oak scobs or bamboo chip, and the like as raw material; taking K2CO3 or and the mixture of K2CO3 and KOH as a activating agent; activating the carbonization material under the carbonization temperature of 750-1000 DEG C and the atmosphere of nitrogen to obtain the active carbon; loading active carbon by means of Ni with additive to improve the electric conduction performance of the active carbon; and leaching with acid solution to increase the type and the content of the oxygen-containing functional group on the surface of the active carbon and reduce the ash content of the active carbon. The specific surface area of the treated active carbon can be reach 1967 m<2> / g; the volume resistivity can be reduced at 1654 mu omega.m; the type and the content of the oxygen-containing functional group are increased; the ash content is greatly reduced; and the specific surface area, the electric conduction performance, the ash content and the combination property of the surface oxygen-containing functional group are better adapted to the requirement of direct carbon fuel cell to fuel, compared with the raw materials of the existing direct carbon fuel cell such as black lead, active carbon, petroleum coke and the like.

Description

technical field [0001] The invention relates to a method for preparing activated carbon of a direct conversion carbon fuel cell, and relates to the fields of fuel cells and activated carbon. Background technique [0002] A fuel cell is a device that directly converts chemical energy in fuel into electrical energy. It has high power generation efficiency, low pollutant emissions, and CO 2 Emissions can be reduced by 40-60%, low noise (<60dB); modular structure; high variable load rate (20-120%); both centralized and decentralized power supply; small footprint. Therefore, fuel cells are called the fourth-generation power generation device after hydropower, thermal power and nuclear power. As a high-temperature fuel cell, direct carbon fuel cell (DCFC) directly uses solid carbon as fuel. Compared with hydrogen-oxygen fuel cell, it has the following advantages: the theoretical efficiency of the battery is close to 100%; the source of solid carbon fuel is wide; The energy de...

Claims

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Application Information

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IPC IPC(8): H01M4/38C01B31/08
CPCY02E60/12Y02E60/10
Inventor 仲兆平张居兵郭厚焜金保升黄亚继
Owner SOUTHEAST UNIV
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