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Preparation method and application of nitrogen and phosphorus codoped carbon oxygen reduction catalyst for microbial fuel cell

A fuel cell and co-doping technology, applied in the direction of electrical components, battery electrodes, circuits, etc., to achieve the effects of simple preparation process, increased output power, and easy expansion

Inactive Publication Date: 2014-05-14
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the current demand for low-cost and high-performance MFC cathode catalysts and the shortcomings of existing heteroatom-doped carbon materials, the purpose of the present invention is to provide a method for preparing nitrogen-phosphorous co-doped carbon materials and its application in Applications in MFC

Method used

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  • Preparation method and application of nitrogen and phosphorus codoped carbon oxygen reduction catalyst for microbial fuel cell
  • Preparation method and application of nitrogen and phosphorus codoped carbon oxygen reduction catalyst for microbial fuel cell
  • Preparation method and application of nitrogen and phosphorus codoped carbon oxygen reduction catalyst for microbial fuel cell

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Step 1: Catalyst Preparation

[0027] Soak 10 g of microcrystalline cellulose in 100 mL of 1 M (NH 4 ) 3 PO 4 The solution was stirred for 24 h and then filtered with suction. The filter cake was dried in an oven at 80 °C. After it was taken out and ground evenly, it was put into a porcelain boat and placed in a quartz tube in a tube furnace. Under the protection of high-purity nitrogen with a flow rate of 100 mL / min, the tube furnace was heated to 900 °C, kept at a constant temperature for 1 h, and cooled naturally. , to obtain black powder. After washing with distilled water for 3 times, dry it to obtain the catalyst.

[0028] Step 2: Fabrication of air cathode and electrochemical performance test

[0029] Ultrasonically disperse conductive carbon black in ethanol, and dropwise add PTFE emulsion equivalent to 7 / 3 mass of conductive carbon black. Continue to exceed

[0030] Squeeze and stir until an elastic, dough-like mass forms. Take it out and roll it into ...

Embodiment 2

[0035] Step 1: Catalyst Preparation

[0036] Soak 10 g of microcrystalline cellulose in 100 mL of 1 M (NH 4 ) 3 PO 4 The solution was stirred for 24 h and then filtered with suction. The filter cake was dried in an oven at 80 °C. After it was taken out and ground evenly, it was put into a porcelain boat and placed in a quartz tube in a tube furnace. Under the protection of high-purity nitrogen with a flow rate of 100 mL / min, the tube furnace was heated to 1000 °C, kept at a constant temperature for 1 h, and cooled naturally. , to obtain black powder. After washing with distilled water for 3 times, dry it to obtain the catalyst.

[0037] Step 2: Fabrication of air cathode and electrochemical performance test

[0038] The second step of embodiment 2 is as described in the second step of embodiment 1.

[0039] The third step: MFC assembly and performance testing

Embodiment 3

[0040]The third step of embodiment 3 is as described in the third step of embodiment 1.

[0041] Example 3

[0042] Step 1: Catalyst Preparation

[0043] Soak 10 g of microcrystalline cellulose in 100 mL of 1 M NH 4 PO 3 (Ammonium metaphosphate) solution, after stirring for 24 h, suction filtration. The filter cake was dried in an oven at 80 °C. After it was taken out and ground evenly, it was put into a porcelain boat and placed in a quartz tube in a tube furnace. Under the protection of high-purity nitrogen with a flow rate of 100 mL / min, the tube furnace was heated to 900 °C, kept at a constant temperature for 1 h, and cooled naturally. , to obtain black powder. After washing with distilled water for 3 times, dry it to obtain the catalyst.

[0044] Step 2: Fabrication of air cathode and electrochemical performance test

[0045] The second step of embodiment 3 is as described in the second step of embodiment 1.

[0046] The third step: MFC assembly and performance te...

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Abstract

The invention discloses a preparation method and application of a nitrogen and phosphorus codoped carbon oxygen reduction catalyst for a microbial fuel cell. The preparation method comprises the following steps: soaking cellulose by an ammonium phosphate compound brine solution, carrying out suction filtration, drying, and carbonizing under the protection of high-purity nitrogen, thereby obtaining nitrogen and phosphorus codoped carbon which serves as a cathode catalyst of the microbial fuel cell. The preparation method provided by the invention has the advantages that the catalyst is prepared by taking natural cellulose which is recyclable and is wide in source as a carbon source and taking cheap and nontoxic ammonium phosphate compound salt as a nitrogen source and a phosphorus source via a direct carbonization method, and can greatly improve the output power of the cell as the catalyst of the microbial fuel cell; the method is simple in preparation, is low in cost, and provides possibility for the scale production of the microbial fuel cells.

Description

technical field [0001] The invention belongs to the field of new energy development and new material application, and in particular relates to a preparation method and application of a nitrogen-phosphorus co-doped carbon-oxygen reduction catalyst used in microbial fuel cells. Background technique [0002] Energy is an important basis for sustainable development of mankind. With the development of modern society, the energy crisis has become increasingly serious, and the development of new energy has become one of the research priorities of the scientific community. As a new technology to develop new energy sources, microbial fuel cells (MFCs) have attracted much attention in recent years. Its basic working principle is that the microorganisms in the anode chamber catalyze the oxidation of organic matter and release electrons and protons. The electrons reach the cathode through an external circuit, and a reduction reaction occurs in combination with the electron ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86
CPCH01M4/9091Y02E60/50
Inventor 陈水亮侯豪情刘琴
Owner JIANGXI NORMAL UNIV
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