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Preparation method of molybdenum-based composite material electrode plate

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

Active Publication Date: 2021-05-25
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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  • Preparation method of molybdenum-based composite material electrode plate
  • Preparation method of molybdenum-based composite material electrode plate
  • Preparation method of molybdenum-based composite material electrode plate

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preparation example Construction

[0029] A method for preparing a molybdenum-based composite material electrode plate mainly includes the following steps:

[0030] Step 1. According to the demand size of the final electrode product, weigh a certain amount of molybdenum powder and nickel powder, and select a suitable graphite mold for future 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 required powder by the product of volume and density. Here, the mass ratio of molybdenum powder to 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, and slowly pour the mixed powder in step 1 in...

Embodiment 1

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

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

[0049] (3) In a glove box full of argon, filter the mixed system in the beaker of step (2), leave the mixed metal powder covered with titanium tetrachloride, place the mixed metal powder in a quartz crucible, And the quartz crucible is preserved in the airtight container as a whole, and then the airtight container with the quartz crucible is taken out from the glove box;

[0050] (4) take out the quartz crucible in 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 30 sccm, take out the quartz crucible after the oxidation reaction finishes and collect in the quartz crucibl...

Embodiment 2

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

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

[0058] (3) In a glove box full of argon, filter the mixed system in the beaker of step (2), leave the mixed metal powder covered with titanium tetrachloride, place the mixed powder in a quartz crucible, and Preserve the quartz crucible as a whole in an airtight container, and then take out the airtight container with the quartz crucible from the glove box;

[0059] (4) the quartz crucible in the step (3) is taken out from the airtight container and put into the quartz tube of the tube furnace rapidly, feeds oxygen, and the oxygen flow rate is 100 sccm, after the oxidation reaction finishes, take out the quartz crucible and collect in the quartz crucible ...

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Abstract

The invention relates to a preparation method of a molybdenum-based composite material electrode plate, which comprises the following steps: in a glove box filled with argon, pouring molybdenum powder and nickel powder into excessive titanium tetrachloride, fully stirring, filtering, putting mixed powder stained with the titanium tetrachloride into a quartz tube of a tube furnace, introducing oxygen, carrying out heat treatment, putting the mixed powder subjected to heat treatment into a graphite mold for spark plasma sintering, soaking a sintered sample into titanium tetrachloride again, filtering, taking out the sample, putting the sample into the quartz tube of the tubular furnace again, and sequentially introducing oxygen and hydrogen sulfide for heat treatment to obtain the molybdenum-based composite material electrode plate. The method is low in cost, convenient to operate and controllable in process. The obtained electrode plate has relatively high catalytic activity and good conductivity, also has certain mechanical properties and machinability, can be used as a catalyst, a current collector and an electrode directly to be applied to catalytic water decomposition, and has a wide large-scale industrial production prospect.

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 Applications(China)
IPC IPC(8): C25B11/031C25B11/046C25B1/04C25B1/55B22F3/11B22F3/24B22F5/10B22F1/02
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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