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A kind of preparation method of molybdenum-based composite material electrode plate

A composite material and electrode plate technology, applied in electrodes, electrode coatings, electrolysis components, etc., can solve the problems of restricting the industrialization process of water splitting and hydrogen production, high cost, etc., and achieve broad scale industrial production prospects, strong applicability, good The effect of conductivity

Active Publication Date: 2022-06-17
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although noble metal catalysts such as platinum have shown excellent activity, their high cost has seriously restricted the industrialization of water splitting hydrogen production.

Method used

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  • A kind of preparation method of molybdenum-based composite material electrode plate
  • A kind of preparation method of molybdenum-based composite material electrode plate
  • A kind of preparation method of molybdenum-based composite material electrode plate

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preparation example Construction

[0029] A preparation method of a molybdenum-based composite material electrode plate, mainly comprising the following steps:

[0030] Step 1. Weigh a certain amount of molybdenum powder and nickel powder according to the demand of the final electrode product, and select a suitable graphite mold for use.

[0031] For example, according to the size of the final product, determine the volume and shape parameters, so as to select the appropriate size graphite mold, and estimate the quality of the powder required by the product of the volume and the density. Here, the mass ratio of molybdenum powder and nickel powder is (3-10):1. The molybdenum powder is the main body of the electrode material of the present invention, and the nickel powder plays the role of assisting sintering and preparing the porous matrix material.

[0032] Step 2: In a glove box filled with argon, take excess titanium tetrachloride liquid and place it in a beaker, slowly pour the mixed powder in step 1 into t...

Embodiment 1

[0047] (1) Weigh 3g of molybdenum powder and 1g of nickel powder, and select a graphite mold with a diameter of φ20 for use.

[0048] (2) In a glove box filled with argon, take excess titanium tetrachloride liquid into a beaker, slowly pour the mixed powder in step (1) into the beaker, and stir well.

[0049] (3) in a glove box filled with argon, filter the mixing system in the beaker in step (2), and get the mixed metal powder stained with titanium tetrachloride, and place the mixed metal powder in a quartz crucible, and keep the quartz crucible as a whole in an airtight container, and then take out the airtight container equipped with the quartz crucible from the glove box;

[0050] (4) take out the quartz crucible in the step (3) from the airtight container and put it into the quartz tube of the tube furnace quickly, feed oxygen, the oxygen flow rate is 30sccm, after the oxidation reaction finishes, take out the quartz crucible and collect in the quartz crucible mixed powd...

Embodiment 2

[0056] (1) Weigh 5g of molybdenum powder and 1g of nickel powder, and select a graphite mold with a diameter of φ30 for use.

[0057] (2) In a glove box filled with argon, take excess titanium tetrachloride liquid into a beaker, slowly pour the mixed powder in step (1) into the beaker, and stir well.

[0058] (3) in a glove box filled with argon, filter the mixing system in the beaker in step (2), and take the mixed metal powder stained with titanium tetrachloride, place the mixed powder in a quartz crucible, and Store the quartz crucible as a whole in an airtight container, and then take the airtight container equipped with the quartz crucible out of the glove box;

[0059] (4) take out the quartz crucible in the step (3) from the airtight container and put it into the quartz tube of the tube furnace quickly, feed oxygen, the oxygen flow is 100sccm, take out the quartz crucible after the oxidation reaction finishes and collect in the quartz crucible mixed powder.

[0060] (...

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Abstract

The invention relates to a preparation method of a molybdenum-based composite material electrode plate. In a glove box filled with argon, molybdenum powder and nickel powder are poured into excess titanium tetrachloride, stirred thoroughly and filtered, and the The mixed powder of titanium dioxide is placed in the quartz tube of the tube furnace for heat treatment, and the mixed powder after heat treatment is placed in a graphite mold for discharge plasma sintering. The sintered sample is soaked in titanium tetrachloride again, and filtered. The sample is taken out and put into the quartz tube of the tube furnace again, and oxygen and hydrogen sulfide are fed in sequence for heat treatment, and the molybdenum-based composite material electrode plate is obtained after completion. The invention has low cost, convenient operation and controllable process. The obtained electrode plate has high catalytic activity and good electrical conductivity, and at the same time has certain mechanical properties and processability. It can be used not only as a catalyst, but also as a current collector, and can also be directly used as an electrode to catalyze water splitting. The prospect of large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of preparation of catalytic materials, in particular to a preparation method of a molybdenum-based composite material electrode plate, which belongs to a technical application of powder metallurgy preparation of catalytic materials. Background technique [0002] With the gradual scarcity of petroleum resources and the increasingly serious environmental pollution, hydrogen energy is considered to be the most promising alternative clean energy. The development and utilization of hydrogen energy must first solve the problem of cheap hydrogen and large-scale production. In recent years, a large number of studies have shown that electrocatalytic water splitting is an efficient and sustainable method for hydrogen production. Theoretically, water electrolysis can be carried out if the voltage exceeds 1.23V, but in actual electrolysis, due to the existence of overpotential, electrolyte resistance and electronic cir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/031C25B11/046C25B1/04C25B1/55B22F3/11B22F3/24B22F5/10B22F1/16
CPCC25B11/04C25B1/04B22F3/11B22F5/10B22F3/24B22F2003/248B22F1/16Y02E60/36
Inventor 魏世忠杨璐潘昆明夏梁彬吴宏辉赵阳徐流杰张玢单康宁周玉成司岸恒王晓东
Owner HENAN UNIV OF SCI & TECH
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