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Foamy copper loaded nickel-molybdenum-phosphorus-based composite material and preparation method and application thereof

A composite material and foamed copper technology, which is applied in the field of foamed copper-supported nickel-molybdenum-phosphorus-based composite materials and its preparation, to achieve the effects of accelerating material transfer, enhancing hydrogen evolution reaction activity, and reducing charge transfer resistance

Pending Publication Date: 2021-11-23
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, NiMoP and Cu 3 The application of P co-prepared composite materials in the field of hydrogen evolution catalysis has not been reported

Method used

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  • Foamy copper loaded nickel-molybdenum-phosphorus-based composite material and preparation method and application thereof
  • Foamy copper loaded nickel-molybdenum-phosphorus-based composite material and preparation method and application thereof
  • Foamy copper loaded nickel-molybdenum-phosphorus-based composite material and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0032] Embodiment of the present invention provides a method for preparing a foamed nickel, molybdenum and phosphorus supported copper-based composite material, comprising the steps of:

[0033] Sl, take ammonium persulfate and potassium hydroxide, deionized water was added to the mixture arranged A, the pretreated copper foam mixture placed in A, the reaction was allowed to stand, to give Cu (OH) 2 / CF;

[0034] S2, take nickel nitrate hexahydrate Ni (NO 3 ) 2 · 6h 2 O, sodium molybdate dihydrate H 4 MoNa 2 O 6 And urea, deionized water was added to a mixture of configured B, and Cu (OH) 2 / CF B placed in the liquid mixture, a hydrothermal reaction in an autoclave, to give NiMoL DH @ Cu (OH) 2 Nanoarray, washed with water, to give after lyophilization NiMo LDH @ Cu (OH) 2 / CF nanocomposite;

[0035] S3, the NiMo LDH @ Cu (OH) 2 / Nanocomposite phosphide raw material is mixed with CF2, disposed after firing, cooling tube furnace to give a copper loading of foam nickel, molybden...

Embodiment 1

[0050] This embodiment provides a method for preparing a foam-copper load nickel molybdenum phosphorus compound, including the steps of:

[0051] S1, take the foam copper to cut into 1 × 3 cm 2 Shape number, put it in anhydrous ethanol, 15min, then use 1 mol L -1 Hydrochloric acid is solened to clean the oxide of the surface of the foam, and finally use deionized water for 10 min. Then, 0.41 g of ammonium sulfate and 2.53 g of potassium hydroxide in two beakers, respectively, 7.5 ml of deionized water forming solution, then mixed, ultrasonic 5min, configured to clear the solution; copper after pretreatment In the mixed solution, stand for 20 min, then rinsed with deionized water several times, the color of the foam copper be bright blue, that is, Cu (OH) 2 / Cf.

[0052] S2, 1 mmol hexahydrate nickel nickel, 1 mmol dihydration sodium molybdate and 5 mmol urea in a 50 ml tapered bottle, add 30 mL of deionized water, ultrasonic 10min to form a uniform and transparent light green sol...

Embodiment 2

[0058] This embodiment provides a method of preparing a foam-loaded nickel-molybdenum phosphorus-based composite, and the difference from Example 1 is:

[0059] In step S2, it is 2 h at 180 ° C for 2 h to obtain NIMOL DH @ Cu (OH) 2 Nanometer array;

[0060] Other steps and parameters are the same as in Example 1.

[0061] 2 is CF, Cu (OH) of Example 2 2 / Cf, cu 3 P / CF, NIMO LDH / CF, NIMOP / CF, NIMO LDH @ Cu (OH) 2 / Cf and nimop @ cu 3 P / CF impedance map, where Figure 2 (a) is CF, Cu (OH) 2 / Cf, cu 3 P / CF, NIMO LDH / CF, NIMOP / CF, NIMO LDH @ Cu (OH) 2 / Cf and nimop @ cu 3 P / CF's Energy Templer, which is tested under the open circuit voltage and the external voltage (-0.2V Versus Rhe). As can be seen from the figure, for all synthetic materials, their solution resistors (RS) are small (3 P / CF's RS minimum (2.5Ω), which indicates the nimop @ CU of the rod structure 3 The P and CF substrates have good contact to reduce the resistance.

[0062] As shown in Figure 2 (...

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Abstract

The invention provides a foamy copper loaded nickel-molybdenum-phosphorus-based composite material and a preparation method and application thereof. The preparation method comprises the steps of taking ammonium persulfate and potassium hydroxide, adding deionized water to prepare a mixed solution A, placing foamy copper in the mixed solution A, and conducting standing reaction to obtain Cu(OH)2 / CF; taking cobalt nitrate hexahydrate, manganese nitrate tetrahydrate and urea, adding deionized water to prepare a mixed solution B, putting Cu(OH)2 / CF into the mixed solution B, carrying out hydrothermal reaction in a high-pressure reaction kettle, conducting cleaning, and conducting drying to obtain a CoMn LDH-coated Cu(OH)2 / CF composite nanomaterial; and mixing the CoMn LDH-coated Cu(OH)2 / CF composite nanomaterial with a phosphorization raw material, conducting calcining in a tubular furnace, and conducting cooling to obtain the foamy copper-loaded nickel-molybdenum-phosphorus-based composite material. The foamy copper-loaded nickel-molybdenum-phosphorus-based composite material with the hollow layered structure prepared by the invention is beneficial to full contact of an active substance and an electrolyte, and meanwhile, an in-situ growth nanostructure can reduce resistance, so that the composite material shows excellent hydrogen evolution reaction activity of an electrocatalyst.

Description

Technical field [0001] The present invention relates to a water electrolysis hydrogen evolution technical field, particularly, to a phosphor material and its preparation method and application supported nickel copper molybdenum based composite foam. Background technique [0002] Transition metal compounds such as oxides, sulfides, phosphides, nitrides and carbides, substituted promising materials for hydrogen evolution platinum Pt-based catalyst, the transition metal phosphide because it has more superior than other catalytically active transition metal compound and chemical stability, has attracted widespread attention. [0003] In recent years, Ni 2 P, CoP, FeP, WP, and other transition metal phosphide MoP continue to be reported in the field of catalysis, has been experimentally confirmed in the transition metal phosphide, the charge density transferred from a transition metal to P, resulting in formation of a positively and negatively charged metal P charges two active sites,...

Claims

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Application Information

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IPC IPC(8): C25B11/054C25B11/091C25B11/061C25B11/031C25B1/04B82Y40/00
CPCC25B11/054C25B11/091C25B11/061C25B11/031C25B1/04B82Y40/00Y02E60/36
Inventor 王建芝喻发全余洪亮汪贤明蔡宁薛亚楠李辉
Owner WUHAN INSTITUTE OF TECHNOLOGY
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