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Preparation method of anode catalyst for sodium borohydride fuel battery

A fuel cell, sodium borohydride technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, battery electrodes, etc., can solve the problem of hindering mass transfer, intensifying anode polarization, and reducing fuel utilization rate and other issues, to achieve the effect of improving utilization, high cost performance, and improving security and reliability

Inactive Publication Date: 2013-09-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The generation of hydrogen not only reduces the utilization rate of the fuel, but also hinders the NaBH in the fuel 4 anode polarization due to mass transfer

Method used

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  • Preparation method of anode catalyst for sodium borohydride fuel battery
  • Preparation method of anode catalyst for sodium borohydride fuel battery
  • Preparation method of anode catalyst for sodium borohydride fuel battery

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1: Preparation of macroporous carbon

[0026] Weigh the hydrophilic nano-CaCO according to the mass ratio of 1:1 3 (particle size 15-40 nm) and 10 g of glucose each, add 100 mL of deionized water, and mix with ultrasonic vibration for 30 minutes to dissolve the glucose and mix with nano-CaCO 3 Disperse evenly, heat to evaporate water, and then cure at 160°C for 6 hours. The cured product was heated to 800 °C under the protection of nitrogen atmosphere, and carbonized at constant temperature for 2 hours. The carbonized product was washed successively with hydrochloric acid and deionized water, and dried at a constant temperature of 120°C for 4 hours to obtain a macroporous carbon material, whose morphology was as follows: figure 1 shown.

Embodiment 2

[0027] Example 2: Preparation of polypyrrole modified macroporous carbon

[0028] Weigh the hydrophilic nano-CaCO according to the mass ratio of 1:1 3 (15-40 nm) and 10 g of sucrose each, add 100 mL of deionized water, and mix with ultrasonic vibration for 30 minutes to dissolve the glucose and mix with nano-CaCO 3 Disperse evenly, heat to evaporate water, and then cure at 160°C for 6 hours. The cured product was heated to 800 °C under the protection of nitrogen atmosphere, and carbonized at constant temperature for 2 hours. The carbonized product was washed successively with hydrochloric acid and deionized water, and dried at a constant temperature at 120° C. for 4 hours to obtain a macroporous carbon material.

[0029]The macroporous carbon material was crushed to a particle size of 100-400 mesh, and 1 g of macroporous carbon was put into a three-neck flask, vacuumed for 2 hours, and 60 mL of pyrrole solution was added with a separatory funnel, which contained 16.77 g of ...

Embodiment 3

[0030] Example 3: Polypyrrole-modified macroporous carbon-supported platinum catalyst

[0031] 1 g of polypyrrole-modified macroporous carbon material prepared in Example 2 was placed in a hydrothermal reactor with a volume of 150 mL, and 100 mL of platinum chloride solution was added, containing 1.2 mmol of platinum chloride (0.32 g) After ultrasonic vibration and mixing for 20 minutes, seal the reaction vessel, place it in an oil bath, raise the temperature of the oil bath to 300 °C for 12 hours, filter, wash with deionized water, and vacuum dry at 90 °C to obtain macroporous carbon loading Nitrogen-containing platinum catalyst.

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Abstract

The invention relates to a fuel battery technology, and aims to provide a preparation method of an anode catalyst for a sodium borohydride fuel battery. The method comprises the following steps: curing glucose or sucrose or hydrophilic nano CaCO3; performing constant-temperature carbonization on the cured product in a nitrogen gas atmosphere; washing the carbonized product, and drying to obtain a macroporous carbon material; pulverizing the macroporous carbon material, adding into a pyrrole solution, and performing supersonic vibration mixing to ensure that the pyrrole monomer is dispersed; dropwisely adding an oxydol solution to perform pyrrole polymerization, and drying by distillation to obtain a polypyrrole modified macroporous carbon material; and performing supersonic vibration mixing with a solution of transition metal nitrate, sulfate or chloride, reacting, filtering, cleaning, and drying to obtain a macroporous carbon loaded nitrogen-containing transition metal catalyst, namely the anode catalyst for a sodium borohydride fuel battery. According to the invention, the apparent coulomb value can be increased, the hydrogen production problem of the sodium borohydride fuel battery in the power generation process can be solved, and the utilization ratio of sodium borohydride of the sodium borohydride fuel battery in the power generation process can be increased. Besides, the safety and reliability of the battery are enhanced, and high cost performance is achieved.

Description

technical field [0001] The invention relates to a method for preparing an anode catalyst of a sodium borohydride fuel cell, in particular to a method for preparing an anode catalyst for a sodium borohydride fuel cell by using polypyrrole as a modified material and macroporous carbon as a carrier by using a hydrothermal method. Background technique [0002] Fuel cell is a new power generation technology with high efficiency, low pollution and diversified energy sources. The fuel cell power generation system is not only lower in cost than traditional fossil fuels, but also has the advantages of cleanliness and high efficiency. It can also be combined with nuclear energy, biomass energy, solar energy, wind energy and other power generation technologies to make energy use diversified, renewable and sustainable. . Fuel cells use fuels such as alcohol, natural gas, hydrogen, sodium borohydride, and hydrazine to convert electricity into electricity, and use the fuel input from the...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J23/755B01J23/889H01M4/90H01M4/92
CPCY02E60/50
Inventor 李洲鹏李高然刘宾虹
Owner ZHEJIANG UNIV
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