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Sea urchin shaped cobalt sulfide catalyst loaded on foam nickle as well as preparation method thereof and application thereof as water electrolysis oxygen evolution catalyst

A nickel foam, sea urchin-like technology, applied in the field of nanomaterials, can solve the problems of low energy conversion efficiency, high power consumption, unfavorable mass production, etc., and achieves the effects of low cost, reduced internal resistance, and not easy to fall off.

Active Publication Date: 2018-11-13
佛山市利元合创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conversion, storage and utilization of large-scale intermittent energy need efficient and clean methods, and hydrogen production by electrolysis of water provides a feasible and effective solution to the above problems, but in the production of hydrogen by electrolysis of water, excessive anode Oxygen overpotential needs to consume high electric energy, making the energy conversion efficiency low
As a catalytic electrode material for electrolysis of water and oxygen evolution, noble metal anodes have both good activity and stability, but are not conducive to mass production due to their high price and scarcity.

Method used

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  • Sea urchin shaped cobalt sulfide catalyst loaded on foam nickle as well as preparation method thereof and application thereof as water electrolysis oxygen evolution catalyst
  • Sea urchin shaped cobalt sulfide catalyst loaded on foam nickle as well as preparation method thereof and application thereof as water electrolysis oxygen evolution catalyst
  • Sea urchin shaped cobalt sulfide catalyst loaded on foam nickle as well as preparation method thereof and application thereof as water electrolysis oxygen evolution catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of sea urchin-like cobalt sulfide loaded on foamed nickel, comprising the following steps:

[0026] (1) Slice the nickel foam into 3cm×3cm size, place it in 40ml of absolute ethanol and ultrasonically clean it to remove the surface oil, and then place the nickel foam in 3mol·L -1 Ultrasonic cleaning of surface impurities with hydrochloric acid solution;

[0027] (2) Dissolve 0.3g of cobalt nitrate hexahydrate and 0.2g of thioacetamide in 20mL of distilled water and 20mL of absolute ethanol mixed solvent respectively, stir for 15 minutes until dissolved, and obtain a pink catalyst precursor solution;

[0028] (3) transfer the catalyst precursor solution into a 100mL polytetrafluoroethylene-lined reactor, and place a piece of nickel foam after the treatment in step (1) in the reactor, and then carry out the hydrothermal reaction at 150°C for 4h, Cool to room temperature, take out the sample, wash with water and ethanol for 6 times, and dry at 60°C to...

Embodiment 2

[0034] The difference between this embodiment and embodiment 1 is: the organic cleaning agent described in step (1) is acetone, and other conditions are all the same as embodiment 1.

Embodiment 3

[0036] The difference between this example and Example 1 is that the solvent described in step (2) is distilled water, and other conditions are the same as in Example 1.

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Abstract

The invention relates to sea urchin shaped cobalt sulfide loaded on foam nickle as well as a preparation method thereof and application thereof as a water electrolysis oxygen evolution catalyst. The preparation method comprises the following steps: 1, placing foam nickle in an organic cleaning agent to remove greasy dirt on the surface of the foam nickle through ultrasonic cleaning, and then, placing the foam nickle in diluted acid solution to remove impurities on the surface of the foam nickle through ultrasonic cleaning; 2, dissolving cobalt nitrate and thioacetamide in a mixed solvent, andstirring until dissolution to obtain a catalyst precursor solution; and 3, transferring the catalyst precursor solution to a reaction still with foam nickle, and after hydrothermal reaction, obtainingthe sea urchin shaped cobalt sulfide loaded on foam nickle. The catalysis oxygen evolution performance of the sea urchin shaped cobalt sulfide catalyst is high; and the sea urchin shaped cobalt sulfide catalyst can be applied to catalyze water electrolysis electrode material and is low in preparation cost, simple in operating technology and high in catalysis stability.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to a sea urchin-like cobalt sulfide loaded on foamed nickel, a preparation method thereof, and an application as an oxygen evolution catalyst for electrolysis of water. Background technique [0002] Fossil energy such as coal, oil, and natural gas has supported the progress of modern human civilization and economic and social development. However, due to the non-renewability of fossil energy and the huge consumption of fossil energy by humans, fossil energy is facing a crisis of depletion and is accompanied by serious environmental problems. The energy structure dominated by fossil energy is obviously unsustainable. The limited storage of fossil energy forces humans to seek renewable and environmentally friendly new energy sources. At present, the conversion, storage and utilization of large-scale intermittent energy need efficient and clean methods, and hydrogen pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B11/03C25B1/04
CPCC25B1/04C25B11/031C25B11/075Y02E60/36
Inventor 袁黎明韦丽成杨世宏
Owner 佛山市利元合创科技有限公司
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