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Nickel and molybdenum alloy electrode material and preparation method thereof

An electrode material, nickel-molybdenum alloy technology, applied in electrode coatings, electrolysis processes, electrolysis components, etc., can solve the problems of difficult to accurately control the component content, inability to large-scale production, high preparation costs, etc., to reduce the hydrogen evolution overpotential, The effect of low cost and short production cycle

Inactive Publication Date: 2021-05-11
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of hydrogen evolution electrode materials include electrodeposition, thermal coating decomposition, magnetron sputtering, etc. In these preparation methods, the content of each component is difficult to precisely control, large-scale production is impossible, and the preparation cost is high and Complex production process and other issues

Method used

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Examples

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Effect test

preparation example Construction

[0020] The preparation method of nickel-molybdenum alloy electrode material comprises the following steps:

[0021] (1) Wash Ni, Mo, Fe, Cr, W, Co, Mn, and V with dilute hydrochloric acid, deionized water, and absolute ethanol with a mass fraction of 0.1% to 30% in sequence, and place at 50°C Dry in a vacuum oven at ~80°C to obtain dried Ni, Mo, Fe, Cr, W, Co, Mn, V.

[0022] (2) The dried Ni and Mo main materials are put into the crucible, and the alloy materials such as Fe, Cr, W, Co, Mn, V are placed in the funnel feeder; the crucible is put into the vacuum induction melting furnace, and The vacuum induction melting furnace is evacuated to a vacuum degree of less than 1 Pa; the mass ratio of Ni to Mo is (3-8): (1-6).

[0023] (3) Sending electricity to heat the charge, melting Ni and Mo after drying in step (2) at 10kW~30kW for 1h~5h to 70~80% of the crucible charge melting, utilizing the skin effect of the induced current, at low power Next, layer by layer smelting to re...

Embodiment 1

[0030] Wash Ni, Mo, Fe, Cr, W, Co, Mn, V successively with 5% dilute hydrochloric acid, deionized water, and absolute ethanol for 5 times, and then dry them in a vacuum oven at 60°C to obtain dry After Ni, Mo, Fe, Cr, W, Co, Mn, V. The dried Ni and Mo main materials were put into the crucible, and the Fe, Cr, W, Co, Mn, V alloy materials were placed in the funnel feeder. The contents of each component are shown in Table 1. Put the crucible into a vacuum induction melting furnace, and evacuate the vacuum induction melting furnace to a vacuum degree of less than 1 Pa; the mass ratio of Ni to Mo is 5.0:1.8. Send electricity to heat the charge, and melt the dried Ni and Mo at 30kW for 1 hour until 70-80% of the crucible charge is melted. After the smelting is completed, the vacuum induction melting furnace for smelting Ni and Mo is fed with argon gas at a flow rate of 100 mL / min, and the argon gas feeding time is 30 min. Evacuate again, and evacuate the vacuum induction melting ...

Embodiment 2

[0034]Wash Ni, Mo, Fe, Cr, W, Co, Mn, V successively with 5% dilute hydrochloric acid, deionized water, and absolute ethanol for 5 times, and then dry them in a vacuum oven at 60°C to obtain dry After Ni, Mo, Fe, Cr, W, Co, Mn, V. The dried Ni and Mo main materials were put into the crucible, and the Fe, Cr, W, Co, Mn, V alloy materials were placed in the funnel feeder. The contents of each component are shown in Table 2. Put the crucible into a vacuum induction melting furnace, and evacuate the vacuum induction melting furnace to a vacuum degree of less than 1 Pa; the mass ratio of Ni to Mo is 5.0:2.4. Send electricity to heat the charge, and melt the dried Ni and Mo at 30kW for 3 hours until 70-80% of the crucible charge is melted. After the smelting is completed, the vacuum induction melting furnace for smelting Ni and Mo is fed with argon gas at a flow rate of 100 mL / min, and the argon gas feeding time is 30 min. Evacuate again, and evacuate the vacuum induction melting ...

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Abstract

The invention discloses a nickel and molybdenum alloy electrode material which comprises 30-80% of Ni and 10-60% of Mo and further comprises 0.1-10% of Fe, Cr, W, Co, Mn and V. The preparation method of the electrode material comprises the following steps: drying a raw material after washing the same; placing dried Ni and Mo in a vacuum induction melting furnace to perform smelting at 10-30 kW; introducing argon into the vacuum induction melting furnace which smelts Ni and Mo; vacuumizing the vacuum induction melting furnace which smelts Ni and Mo; adding dried Fe, Cr, W, Co, Mn and V into the vacuumized vacuum induction melting furnace and heating the vacuum induction melting furnace in sequence at 10-30 kW and 30-60 kW; refining the melted material; and taking out the vacuum cooled material to obtain the nickel and molybdenum alloy electrode material. The preparation method is easy to operate, safe and reliable, short in production period and low in cost.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, and in particular relates to a nickel-molybdenum alloy electrode material and a preparation method thereof. Background technique [0002] Hydrogen energy, as a clean, efficient, pollution-free, high combustion calorific value of new energy, is one of the current research hotspots of new energy. Common hydrogen production methods include fossil fuel hydrogen production, biomass as raw material hydrogen production, and water decomposition hydrogen production. The most mature and economical method, and has the advantages of simple operation and high product purity. The current problem of electrolytic hydrogen production technology is the high hydrogen evolution overpotential and high energy consumption in the electrolysis process. Therefore, the development of electrode materials with low hydrogen evolution overpotential, low energy consumption and high activity has become an urgent pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C27/04C22C30/00C22C1/02C25B11/046C25B1/04
CPCC22C19/057C22C27/04C22C30/00C22C1/02C22C1/023C25B1/04Y02E60/36
Inventor 李衫衫于庆河米菁郝雷王树茂蒋利军刘皓李世杰
Owner GRIMAT ENG INST CO LTD
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