A co-o high-efficiency composite hydrogen evolution electrode covered on co-mo-o and its preparation method

A co-mo-o, hydrogen evolution electrode technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., can solve the problems of high energy consumption, difficult preparation of composite hydrogen evolution electrodes, poor stability, etc., to increase specific surface area and prevent shedding phenomenon , good stability

Active Publication Date: 2019-01-15
天津市大陆制氢设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the defects in the above-mentioned technologies, the present invention provides a Co-O high-efficiency composite hydrogen evolution electrode covered on Co-Mo-O and its preparation method, which overcomes the difficulties in the preparation of composite hydrogen evolution electrodes in the prior art and high energy consumption, The problem of poor stability

Method used

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  • A co-o high-efficiency composite hydrogen evolution electrode covered on co-mo-o and its preparation method
  • A co-o high-efficiency composite hydrogen evolution electrode covered on co-mo-o and its preparation method
  • A co-o high-efficiency composite hydrogen evolution electrode covered on co-mo-o and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0039] (1) Pretreatment of conductive substrate

[0040] Choose a nickel foam that has been cut to a size of 2×4cm. Soak it completely with 100ml of acetone, and oscillate ultrasonically for 30 minutes to remove the residual engine oil during surface processing of nickel foam. The soaked nickel foam was rinsed repeatedly with deionized water, then placed in the prepared 150ml, 3mol / L HCl, and ultrasonically oscillated for 10min to remove the surface oxide layer of the foamed nickel. Finally, remove the nickel foam from the solution and wash it repeatedly with absolute ethanol and deionized water until PH = 7, and then place it in a vacuum drying oven for vacuum dry storage to prevent it from being secondary oxidized and keep it for subsequent use. use.

[0041] (2) One-time hydrothermal preparation of Co-Mo-O nanosheet interlayer

[0042] Using solvothermal method, use 0.001mol of ammonium molybdate tetrahydrate, 0.007mol of cobalt nitrate hexahydrate and 36ml of polyethyle...

Embodiment 2

[0056] (1) with step (1) in embodiment 1;

[0057] (2) Obtain the Co-Mo-O nanosheet intermediate layer by one hydrothermal treatment

[0058] First carry out the configuration of the precursor solution, select 0.002mol ammonium molybdate and 0.006mol cobalt nitrate hexahydrate and place them in 36ml polyethylene glycol solution for 45 minutes of ultrasonic vibration, and fully stir evenly, and the foamed nickel substrate treated in step (1) Put them together in a 50ml polytetrafluorosolvothermal reaction kettle for solvothermal reaction. The temperature of the solvothermal reaction was set at 180°C, and the time was 20 hours. After the hydrothermal reaction was completed, after the reaction kettle was naturally cooled to room temperature, the electrode was taken out and rinsed with deionized water to remove surface residues, and placed in a vacuum desiccator for natural After air-drying, the Co-Mo-O nanosheet interlayer was obtained.

[0059] (3) Co-O nanowire catalytic laye...

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Abstract

The invention relates to a Co-O efficient compound hydrogen evolution electrode covering Co-Mo-O and a preparation method thereof. The preparation method comprises the following steps of: firstly, pre-treating a conductive substrate; and then growing cobalt and molybdenum oxides with multi-grade compound structures on the pre-treated conductive substrate by means of a hydrothermal method. As a result of a synergistic effect of the multi-stage nano structure, the electrode material has more reaction active sites and smaller electron transfer resistance. The formed electrode material has an excellent hydrogen evolution property, and is kept stably within an electrolysis time longer than 50h. The method provided by the invention is simple to operate and low in production cost, and the compound hydrogen electrode prepared by the method can be widely applied to alkaline water electrolytic industry.

Description

technical field [0001] The invention relates to the field of hydrogen preparation, in particular to a Co-O high-efficiency composite hydrogen evolution electrode covered on Co-Mo-O with low energy consumption and a preparation method thereof. Background technique [0002] Modern human life is inseparable from energy. Energy is the foundation of modern economic development and an important strategic material for social development. With the consumption of traditional fossil fuels and the aggravation of environmental pollution, we urgently need to develop a new renewable energy source. At present, the main energy sources for research include hydropower resources, nuclear energy, wind energy, biomass energy, solar energy, hydrogen energy, shale gas, ocean energy, etc. Among the many new energy sources, hydrogen energy is one of the most potential energy sources. [0003] Currently, there are four main hydrogen production technologies. They are non-renewable hydrogen obtained...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/04C25B11/04
CPCY02E60/36
Inventor 许卫
Owner 天津市大陆制氢设备有限公司
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