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Preparation method and application of carbon material modified graphite phase carbon nitride nanosheet supported platinum nanoelectrocatalyst

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

Active Publication Date: 2022-07-22
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 supported platinum nanoelectrocatalyst
  • Preparation method and application of carbon material modified graphite phase carbon nitride nanosheet supported platinum nanoelectrocatalyst
  • Preparation method and application of carbon material modified graphite phase carbon nitride nanosheet supported platinum nanoelectrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0043] Step 2, preparing graphitic carbon nitride nanosheets;

[0044] Mix 5 ml of glycerol and 15 ml of ethanol to obtain a mixed solution, then add 0.6 g 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 cool to room temperature naturally; then perform suction filtration, Wash with absolute ethanol for several times and dry at 60°C for 8h; put the dried intermediate product into a covered porcelain crucible, heat up to ...

Embodiment 2

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

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

[0056] Step 2, preparing graphitic carbon nitride nanosheets;

[0057] Mix 5 ml of glycerol and 15 ml of ethanol to obtain a mixed solution, then add 0.6 g 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 cool to room temperature naturally; then perform suction filtration, Wash with absolute ethanol for several times and dry at 60°C for 8h; put the dried intermediate product into a covered porcelain crucible, heat up to ...

Embodiment 3

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

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

[0070] Step 2, preparing graphitic carbon nitride nanosheets;

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

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Abstract

The invention belongs to the field of fuel cell catalysts, and in particular relates to a preparation method and application of a carbon material modified graphite phase carbon nitride nanosheet supported platinum nanometer electrocatalyst; the steps are: firstly preparing a graphite phase carbon nitride nanosheet precursor and graphite Phase carbon nitride nanosheets, and then based on this, using melamine as raw material, graphite phase carbon nitride nanosheets are obtained at lower temperature and simpler process conditions, and this material is used as a carrier, and carbon materials are used for modification at the same time. , obtaining carbon material modified graphite phase carbon nitride nanosheets supported platinum nano electrocatalyst; the carbon material modified graphite phase carbon nitride nanosheet supported platinum nano electrocatalyst prepared by the invention has electrochemical catalytic performance, electrochemical corrosion resistance and stability The properties are better than commercial platinum-carbon catalysts.

Description

technical field [0001] The invention belongs to the field of fuel cell catalysts, and in particular relates 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. However, the practical application is faced with the problems of fuel reforming and purification, difficult hydrothermal 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 currently faced by polymer electrolyte membrane fuel cells. Compared with the traditional low temperature membrane fuel cell (LT-PEMFC), the operating temperature of the high tempe...

Claims

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Application Information

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Patent Type & Authority Patents(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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