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Metal organic framework/foamed nickel electrode material and preparation method and applications thereof

A metal-organic framework and electrode material technology, applied in the field of electrocatalytic materials, can solve the problems of reducing the active site of the catalyst, unsuitable for large-scale production, affecting the effect of the binder, etc., to achieve continuous and stable catalytic effect, theoretical and practical significance Significant, easy-to-use effects

Active Publication Date: 2018-07-24
CAPITAL NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Currently, RuO 2 and IrO 2 It is recognized as a catalyst with good water oxidation catalytic effect, but because it is a noble metal, it is expensive and not suitable for large-scale production; in addition, modifying the powder catalyst on the surface of the electrode through a binder will reduce the active sites exposed by the catalyst, and A large number of bubbles generated seriously affect the effect of the binder in the catalytic process

Method used

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  • Metal organic framework/foamed nickel electrode material and preparation method and applications thereof
  • Metal organic framework/foamed nickel electrode material and preparation method and applications thereof
  • Metal organic framework/foamed nickel electrode material and preparation method and applications thereof

Examples

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Embodiment 1

[0032] The embodiment of the present invention provides a method for preparing a metal organic framework / nickel foam electrode material, and the specific steps are as follows:

[0033] S1. Pretreat the nickel foam sheet, cut the nickel foam sheet into a rectangle of 3cm×1cm, place it in dilute hydrochloric acid for 15 minutes to remove the surface oxide layer, then rinse it with deionized water, then place it in acetone for 15 minutes to remove the surface organic matter, then rinsed with deionized water, and finally placed in an oven, dried at 60°C for 3 hours, and stored for later use;

[0034] S2, weigh 0.48mmol of FeCl 2 4H 2 O and 0.48mmol of terephthalic acid, then add 10.5mL N, N-dimethylformamide, 0.75mL ethanol and 0.75mL deionized water, mix well and place in a 30mL polytetrafluoroethylene reactor, then Add the foamed nickel flakes pretreated in step S1, seal the polytetrafluoroethylene reactor, place it in an oven, heat and react at 125°C for 12h, then cool natura...

Embodiment 2

[0040] The embodiment of the present invention provides a method for preparing a metal organic framework / nickel foam electrode material, and the specific steps are as follows:

[0041] S1. Pretreat the foamed nickel sheet, cut the foamed nickel sheet into a rectangle of 3cm×2cm, put it in dilute hydrochloric acid for 20 minutes to remove the surface oxide layer, then rinse it with deionized water, and then place it in acetone for 20 minutes to remove the surface organic matter, then rinsed with deionized water, and finally placed in an oven, dried at 60°C for 5 hours, and stored for later use;

[0042] S2, weigh 0.48mmol of FeCl 2 4H 2 O and 0.45mmol of terephthalic acid, then add 11mL N, N-dimethylformamide, 0.8mL ethanol and 0.8mL deionized water, mix well and place in a 50mL polytetrafluoroethylene reactor, and then add Add the pretreated nickel foam flakes in step S1, seal the polytetrafluoroethylene reactor, place it in an oven, heat it at 130°C for 14 hours, then cool ...

Embodiment 3

[0046] The embodiment of the present invention provides a method for preparing a metal organic framework / nickel foam electrode material, and the specific steps are as follows:

[0047] S1. Pretreat the foamed nickel sheet, cut the foamed nickel sheet into a rectangle of 3cm×0.8cm, place it in dilute hydrochloric acid for 10 minutes to remove the surface oxide layer, then rinse it with deionized water, then place it in acetone for 10 minutes to remove the oxide layer. The organic matter on the surface is then rinsed with deionized water, and finally placed in an oven, dried at 60°C for 2 hours, and stored for later use;

[0048] S2, weigh 0.48mmol of FeCl 2 4H 2 O and 0.45mmol of terephthalic acid, then add 10mL N, N-dimethylformamide, 0.7mL ethanol and 0.7mL deionized water, mix well and place in a 25mL polytetrafluoroethylene reactor, and then add Add the pretreated nickel foam flakes in step S1, seal the polytetrafluoroethylene reactor, place it in an oven, heat and react ...

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Abstract

The invention discloses a metal organic framework / foamed nickel electrode material and a preparation method and applications thereof. The preparation method comprises following steps: taking a foamednickel sheet as the nickel source and basic material, placing the foamed nickel sheet in a reactor, adding a mixed solution of ferrous salts and terephthalic acid ligands into the reactor, sealing thereactor, heating the reactor to carry out reactions, cooling, taking out the foamed nickel sheet, washing, and drying to obtain the metal organic framework / foamed nickel electrode material. The chemical formula of prepared metal organic frame is Fe2Ni2(OH)2(C8H4O4), and the electrode material belongs to a triclinic system and a P1(1) space group. The provided method has the advantages of scientific and reasonable design, simple and controllable technology, easily available and cheap raw materials, low production cost, and high efficiency, is suitable for massive production, and has a wide commercial prospect. In an alkaline solution, the electrode material has an extremely high electro-catalytic activity on oxidation reactions of water, moreover, the catalytic effect is long lasting and stable, and the theoretical meaning and actual meaning are significant.

Description

technical field [0001] The invention relates to the technical field of electrocatalytic materials, in particular to a metal organic framework / nickel foam electrode material and a preparation method and application thereof. Background technique [0002] Since the beginning of the 20th century, the global economy has expanded rapidly, and the demand for energy in human society has also increased. However, environmental problems such as smoke, acid rain, and greenhouse effects caused by the extensive use of traditional fossil fuels have become increasingly prominent, seriously hindering the development of human society. sustainable green development. At the same time, the non-renewability of fossil fuels is also destined to be exhausted and cannot be used continuously. Under such a background, the development and utilization of sustainable new energy sources have been paid more and more attention by people. New energy sources such as solar energy, wind energy, and hydrogen en...

Claims

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Application Information

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IPC IPC(8): C25B11/03C25B11/04C25B1/04
CPCC25B1/04C25B11/031C25B11/057C25B11/095Y02E60/36
Inventor 林雨青孙凤展丁永奇李长青
Owner CAPITAL NORMAL UNIVERSITY
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