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Nickel-molybdenum carbide nanoparticle/carbon fiber composite nano material, preparation method and application of nickel-molybdenum carbide nanoparticle/carbon fiber composite nano material

A technology of composite nanomaterials and nanoparticles, which is applied in the field of controllable preparation of non-precious metal-based carbon fiber composite nanomaterials, can solve the problems of expensive metal catalysts, poor stability and inability to be used on a large scale, and achieve excellent catalytic activity, high-efficiency preparation, and low cost. cheap effect

Active Publication Date: 2018-11-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a non-precious metal electrocatalyst nickel-molybdenum carbide nanoparticle / carbon fiber composite nanomaterial with high-efficiency water splitting dual functions, its preparation method and its application in electrocatalytic hydrogen and oxygen evolution to solve the problem of precious metal catalyst price Expensive, poor stability and cannot be used on a large scale

Method used

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  • Nickel-molybdenum carbide nanoparticle/carbon fiber composite nano material, preparation method and application of nickel-molybdenum carbide nanoparticle/carbon fiber composite nano material
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  • Nickel-molybdenum carbide nanoparticle/carbon fiber composite nano material, preparation method and application of nickel-molybdenum carbide nanoparticle/carbon fiber composite nano material

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Embodiment 1

[0026] Dissolve 0.2g PAN in 2.3g DMF, stir magnetically at 90°C, after all PAN is dissolved, add 0.067g Ni(Ac) 2 4H 2 O and 0.133g MoO 2 (acac) 2 Dissolve in the above solution and stir overnight to obtain a homogeneous thick spinning solution precursor. Inject the spinning liquid precursor into the glass spinning tube of the electrospinning device, the spinning distance is 20cm, the spinning voltage is 18kV, and finally PAN / Ni(Ac) 2 4H 2 O / MoO 2 (acac) 2 Composite nanofiber membrane.

Embodiment 2

[0028] Dissolve 0.2g PAN in 2.3g DMF, stir magnetically at 90°C, after the PAN is completely dissolved, add 0.1g Ni(Ac) 2 4H 2 O and 0.1 g MoO 2 (acac) 2 Dissolve in the above solution and stir overnight to obtain a homogeneous thick spinning solution precursor. Inject the spinning liquid precursor into the glass spinning tube of the electrospinning device, the spinning distance is 20cm, the spinning voltage is 18kV, and finally PAN / Ni(Ac) 2 4H 2 O / MoO 2 (acac) 2 Composite nanofiber membrane.

Embodiment 3

[0030] Dissolve 0.2g PAN in 2.3g DMF, stir magnetically at 90°C, after all PAN is dissolved, add 0.133g Ni(Ac) 2 4H 2 O and 0.067g MoO 2 (acac) 2 Dissolve in the above solution and stir overnight to obtain a homogeneous thick spinning solution precursor. Inject the spinning liquid precursor into the glass spinning tube of the electrospinning device, the spinning distance is 20cm, the spinning voltage is 18kV, and finally PAN / Ni(Ac) 2 4H 2 O / MoO 2 (acac) 2 Composite nanofiber membrane.

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Abstract

The invention discloses a nickel-molybdenum carbide nanoparticle / carbon fiber composite nano material, a preparation method and application of the nickel-molybdenum carbide nanoparticle / carbon fiber composite nano material in electrocatalytic hydrogen evolution or oxygen evolution, and belongs to the technical field of controllable preparation of non-precious metal-based carbon fiber composite nano materials. The nickel-molybdenum carbide nanoparticle / carbon fiber composite nano material is prepared by utilizing three steps of electrospinning, low-temperature calcining in an air atmosphere andhigh-temperature calcining in an argon atmosphere. The nickel-molybdenum carbide nanoparticle / carbon fiber composite nano material disclosed by the invention exists in fiber morphology, and nickel nanoparticles and molybdenum carbide nanoparticles are uniformly distributed inside or outside carbon fiber. The preparation method disclosed by the invention is low in cost, is simple and easy and canrealize large-scale industrial application. The nickel-molybdenum carbide nanoparticle / carbon fiber composite nano material prepared by the invention is used as an electrocatalysis and water decomposition dual-functional electrocatalyst, excellent catalytic activity is shown, high-efficiency preparation of a pollution-free hydrogen energy source is realized, a new strategy is provided for responding increasingly serious environment problems, and important practical application value is obtained.

Description

technical field [0001] The invention belongs to the technical field of controllable preparation of non-noble metal-based carbon fiber composite nanomaterials, and specifically relates to a nickel-molybdenum carbide nanoparticle / carbon fiber composite nanomaterial, a preparation method and its application in electrocatalytic hydrogen evolution or oxygen evolution. Background technique [0002] Sustainable development has become the dominant direction of future energy environment and economic strategy development, while the traditional production capacity technology of fossil energy conversion faces the double test of resource shortage and environmental pollution. As a renewable alternative energy source, hydrogen has the advantages of being clean, efficient and non-polluting. Electrochemical water splitting can produce high-purity hydrogen, which is divided into two half-reactions of hydrogen evolution (HER) and oxygen evolution (OER). However, most oxygen evolution reactions...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B11/12C25B1/04B01J27/22B82Y30/00
CPCC25B1/04B82Y30/00B01J27/22C25B11/057C25B11/091Y02E60/36
Inventor 卢晓峰李美璇王策
Owner JILIN UNIV
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