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Carbon fiber supported CoWP catalyst and preparation method

A carbon fiber and catalyst technology, applied in the field of hydrogen energy and fuel cells, can solve the problems of high energy consumption and high cost, and achieve the effects of high hydrogen production rate, stable performance and dense distribution

Pending Publication Date: 2017-09-15
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although hydrogen production by hydrolysis is simple, it consumes a lot of energy and requires a lot of cost, so it is only used in a few cases, such as the chlor-alkali industry

Method used

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  • Carbon fiber supported CoWP catalyst and preparation method
  • Carbon fiber supported CoWP catalyst and preparation method
  • Carbon fiber supported CoWP catalyst and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Soak the carbon fiber cloth in absolute ethanol, vibrate ultrasonically at 25°C for 10 min, and then immerse in 0.01 M hydrochloric acid for 5 min with magnetic stirring. Wash with deionized water and ultrasonic vibration for 10 min.

[0034] In electrodeposition 1, the carbon fiber is impregnated in a mixed solution of cobalt chloride and boric acid, and the electrodeposition is carried out at a temperature of 40°C and a current density of 900mA / cm2 for 10, 20, 30, and 40mins. The carbon fiber is taken out and rinsed with deionized water.

[0035] Immerse the electrodeposited carbon fiber in cobalt chloride solution for 2.5 hours.

[0036] Immerse the carbon fiber in a mixed solution of 0.05M sodium tungstate and 0.1M sodium hypophosphite, conduct electrodeposition at a temperature of 50°C and a current density of 600mA / cm2 for 10 minutes, take out the carbon fiber, rinse it with deionized water and absolute ethanol.

[0037] Put the electrodeposited carbon fiber into...

Embodiment 2

[0039] Soak the carbon fiber cloth in absolute ethanol, vibrate ultrasonically at 25°C for 10 min, and then immerse in 0.01 M hydrochloric acid for 5 min with magnetic stirring. Wash with deionized water and ultrasonic vibration for 10 min.

[0040] In electrodeposition 1, the carbon fiber was impregnated in a mixed solution of cobalt chloride and boric acid at a temperature of 40°C and the current density was 300, 500, 700, and 900mA / cm2 for 20mins. The carbon fiber was taken out and rinsed with deionized water.

[0041] Immerse the electrodeposited carbon fiber in cobalt chloride solution for 2.5 hours.

[0042] Immerse the carbon fiber in a mixed solution of 0.05M sodium tungstate and 0.1M sodium hypophosphite, conduct electrodeposition at a temperature of 50°C and a current density of 600mA / cm2 for 10 minutes, take out the carbon fiber, rinse it with deionized water and absolute ethanol.

[0043] Put the electrodeposited carbon fiber into a drying oven at 50°C for 12 hour...

Embodiment 3

[0045] Soak the carbon fiber cloth in absolute ethanol, vibrate ultrasonically at 25°C for 10 min, and then immerse in 0.01 M hydrochloric acid for 5 min with magnetic stirring. Wash with deionized water and ultrasonic vibration for 10 min.

[0046] In electrodeposition 1, the carbon fiber was impregnated in a mixed solution of cobalt chloride and boric acid at a temperature of 40°C and a current density of 900mA / cm2 for 20mins. The carbon fiber was taken out and rinsed with deionized water.

[0047] The carbon fiber after electrodeposition 1 was immersed in cobalt chloride solution for 0.5, 1, 1.5, 2, 2.5 hours.

[0048] Immerse the carbon fiber in a mixed solution of 0.05M sodium tungstate and 0.1M sodium hypophosphite, conduct electrodeposition at a temperature of 50°C and a current density of 600mA / cm2 for 10 minutes, take out the carbon fiber, rinse it with deionized water and absolute ethanol.

[0049] Put the electrodeposited carbon fiber into a drying oven at 50°C for...

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Abstract

The invention discloses a carbon fiber supported CoWP catalyst and a preparation method, and belongs to the field of hydrogen energy and fuel cells. The catalyst comprises a carbon fiber fabric and surface cobalt, tungsten and phosphorus. Three elements are supported on the surface of a carbon fiber by an electrodeposition method. The carbon fiber is pretreated and cleaned, and then cobalt, tungsten and phosphorus are supported on the surface of the carbon fiber by a two-step electrodeposition method. The catalyst has catalytic performances such as low cost, high hydrogen production rate and stable performance.

Description

technical field [0001] The invention relates to a carbon fiber-supported CoWP catalyst and a preparation method thereof, in particular to a catalyst based on a carbon fiber cloth-supported non-precious metal alloy for hydrolysis of sodium borohydride solution to produce hydrogen and a preparation method thereof, belonging to the technical field of hydrogen energy and fuel cells. Background technique [0002] With the development of global industrialization, people's demand for energy is getting higher and higher, but traditional energy has been difficult to meet the needs of industry. In order to deal with this problem, many scientists have turned their attention to hydrogen energy. [0003] Hydrogen energy is generally released by the reaction of hydrogen and oxygen. Hydrogen energy is the chemical energy of hydrogen. Hydrogen often exists on the earth in the form of a compound state, and it is also a substance that exists widely in the universe. Seventy-five percent of the...

Claims

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Application Information

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IPC IPC(8): B01J27/188B01J37/34B01J35/06H01M4/90H01M4/88C01B3/04
CPCH01M4/8853H01M4/9083C01B3/04B01J27/188B01J37/348B01J35/58Y02E60/36Y02E60/50
Inventor 魏永生王君彦王艳韦露赵新生
Owner XUZHOU NORMAL UNIVERSITY
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