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Preparation method and application of carbon material modified graphite phase carbon nitride nanosheet loaded platinum nano electrocatalyst

A technology of graphite phase carbon nitride and electrocatalyst, which is applied in the direction of circuits, electrical components, battery electrodes, etc., can solve problems such as performance limitations, and achieve the effects of improving stability, simple operation, and increasing electrochemical specific surface area

Active Publication Date: 2020-05-08
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as a kind of semiconductor material, carbon nitride itself is often limited in its performance in electrocatalytic reactions.

Method used

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  • Preparation method and application of carbon material modified graphite phase carbon nitride nanosheet loaded platinum nano electrocatalyst
  • Preparation method and application of carbon material modified graphite phase carbon nitride nanosheet loaded platinum nano electrocatalyst
  • Preparation method and application of carbon material modified graphite phase carbon nitride nanosheet loaded platinum nano electrocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Step 1, prepare graphite phase carbon nitride nanosheet precursor;

[0042] Weigh 1g of melamine and 1.2g of phosphorous acid and dissolve in 100mL of deionized water, then stir for 1h in a water bath at 80°C, then place in a sealed autoclave, react at 180°C for 10h, and then cool naturally to room temperature ; The obtained product was subjected to suction filtration, washed several times with deionized water, and dried at 60° C. for 8 hours to obtain a precursor;

[0043] Step 2, preparing graphite phase carbon nitride nanosheets;

[0044] Mix 5ml of glycerin and 15ml of ethanol to obtain a mixed solution, then add 0.6g of the precursor obtained in step 1, and stir vigorously until the mixture is uniform; then reflux for 3 hours in an oil bath at 90°C, and naturally cool to room temperature; then perform suction filtration, Wash several times with absolute ethanol, dry at 60°C for 8h; put the dried intermediate product into a covered porcelain crucible, raise the tem...

Embodiment 2

[0054] Step 1, prepare graphite phase carbon nitride nanosheet precursor;

[0055] Weigh 1g of melamine and 1.2g of phosphorous acid and dissolve in 100mL of deionized water, then stir for 1h in a water bath at 80°C, then place in a sealed autoclave, react at 180°C for 10h, and then cool naturally to room temperature ; The obtained product was subjected to suction filtration, washed several times with deionized water, and dried at 60° C. for 8 hours to obtain a precursor;

[0056] Step 2, preparing graphite phase carbon nitride nanosheets;

[0057] Mix 5ml of glycerin and 15ml of ethanol to obtain a mixed solution, then add 0.6g of the precursor obtained in step 1, and stir vigorously until the mixture is uniform; then reflux for 3 hours in an oil bath at 90°C, and naturally cool to room temperature; then perform suction filtration, Wash several times with absolute ethanol, dry at 60°C for 8h; put the dried intermediate product into a covered porcelain crucible, raise the tem...

Embodiment 3

[0068] Step 1, prepare graphite phase carbon nitride nanosheet precursor;

[0069] Weigh 1g of melamine and 1.2g of phosphorous acid and dissolve in 100mL of deionized water, then stir for 1h in a water bath at 80°C, then place in a sealed autoclave, react at 180°C for 10h, and then cool naturally to room temperature ; The obtained product was subjected to suction filtration, washed several times with deionized water, and dried at 60° C. for 8 hours to obtain a precursor;

[0070] Step 2, preparing graphite phase carbon nitride nanosheets;

[0071]Mix 5ml of glycerin and 15ml of ethanol to obtain a mixed solution, then add 0.6g of the precursor obtained in step 1, and stir vigorously until the mixture is uniform; then reflux for 3 hours in an oil bath at 90°C, and naturally cool to room temperature; then perform suction filtration, Wash several times with absolute ethanol, dry at 60°C for 8h; put the dried intermediate product into a covered porcelain crucible, raise the temp...

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Abstract

The invention belongs to the field of fuel cell catalysts, and particularly relates to a preparation method and application of a carbon material modified graphite phase carbon nitride nanosheet loadedplatinum nano electrocatalyst. The preparation method comprises the following steps: firstly, preparing a graphite-phase carbon nitride nanosheet precursor and a graphite-phase carbon nitride nanosheet; then, based on this, taking melamine as a raw material, obtaining a graphite-phase carbon nitride nanosheet at a low temperature under simple process conditions, and taking the material as a carrier, meanwhile; and using a carbon material for modification, and obtaining the carbon material modified graphite-phase carbon nitride nanosheet loaded platinum nano electrocatalyst. The electrochemical catalytic performance, electrochemical corrosion resistance and stability of the prepared carbon material modified graphite phase carbon nitride nanosheet loaded platinum nano electrocatalyst are superior to those of a commercial platinum-carbon catalyst.

Description

technical field [0001] The invention belongs to the field of fuel cell catalysts, in particular to a preparation method and application of a carbon material-modified graphite-phase carbon nitride nanosheet-supported platinum nanometer electrocatalyst. Background technique [0002] Polyelectrolyte membrane fuel cell (PEMFC), as the fifth generation fuel cell, is considered to be one of the most promising clean energy technologies in this century. The research on this type of fuel cell is a hot topic in this field, but in practical application, it faces problems such as fuel reformation and purification, difficult water and heat management, complex structure and high cost. Increasing the operating temperature of fuel cells is considered to be an ideal way to solve the main problems faced by polymer electrolyte membrane fuel cells. Compared with the traditional low-temperature membrane fuel cell (LT-PEMFC), the operating temperature of the high-temperature membrane fuel cell (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/86H01M4/92
CPCH01M4/926H01M4/88H01M4/8652Y02E60/50
Inventor 张玮琦苏华能马强徐谦
Owner JIANGSU UNIV
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