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Efficient Ni-S-Mo hydrogen evolution electrode and preparation method thereof

A hydrogen evolution electrode and high-efficiency technology, applied in electrodes, electrolytic coatings, electrolysis processes, etc., can solve the problems of industrial production difficulties and high energy consumption for the preparation of hydrogen evolution electrodes, and achieve the purpose of increasing specific surface area, improving catalytic hydrogen evolution activity, and improving stability. Effect

Inactive Publication Date: 2016-04-13
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 problems existing in the prior art, the present invention provides a high-efficiency Ni-S-Mo hydrogen evolution electrode and its preparation method, which overcomes the problems of high energy consumption in the preparation of hydrogen evolution electrodes and difficulties in industrial production in the prior art

Method used

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  • Efficient Ni-S-Mo hydrogen evolution electrode and preparation method thereof
  • Efficient Ni-S-Mo hydrogen evolution electrode and preparation method thereof
  • Efficient Ni-S-Mo hydrogen evolution electrode and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Pretreatment of conductive substrate

[0031] Select the trimmed nickel plate. Use 20 mesh and 60 mesh sandpaper to polish the nickel foil, and rinse it with deionized water after polishing. Then the nickel foil is subjected to alkali washing and degreasing. The alkali washing and degreasing step is to put the alkali washing solution in a constant temperature water bath and raise the temperature to 100° C., then put the machined nickel foil into it, and treat it at a constant temperature for 1 hour. Rinse with deionized water afterwards. Alkali lotion formula: 10% sodium hydroxide by mass fraction, 2% sodium carbonate by mass fraction. The degreased nickel foil is pickled again. Soak in acid solution for 30min. The pickling liquid configuration method is to mix concentrated hydrochloric acid and deionized water according to the volume ratio of 1:2. After pickling, rinse the nickel foil with deionized water until the pH is neutral, ready to use.

[0032] (2) Pr...

Embodiment 2

[0043] Step (1) is the same as step (1) in Example 1;

[0044] (2) Preparation of Ni-S electrode by one electrodeposition

[0045] A three-electrode system is used for one deposition. The conductive base processed with step (1) is the working electrode, and the Ni plate is the counter electrode; the composition of the Ni-S plating solution is: thiourea 25g L -1 , nickel sulfate 100g L -1 , nickel chloride 30g·L -1 . The bath temperature is 30°C. During the electroplating process, the current density was 20mA cm -2 , the deposition time is 25min. Rinse with deionized water after electroplating to remove residual plating solution, and obtain Ni-S electrode after natural air drying.

[0046] (3) Preparation of Ni-S / Ni-S-Mo electrode by secondary electrodeposition

[0047] After the Ni-S electrode prepared by the process (2) is obtained, the secondary deposition process is performed again. Continue to use the three-electrode system, with the Ni-S electrode obtained in (2)...

Embodiment 3

[0051] Step (1) is the same as step (1) in Example 1;

[0052] (2) Preparation of Ni-S electrode by one electrodeposition

[0053] A three-electrode system is used for one deposition. The conductive base processed with step (1) is the working electrode, and the Ni plate is the counter electrode; the composition of the Ni-S plating solution is: thiourea 25g L -1 , nickel sulfate 100g L -1 , nickel chloride 30g·L -1 . The bath temperature is 25°C. During the electroplating process, the current density was 30mA cm -2 , the deposition time is 10min. Rinse with deionized water after electroplating to remove residual plating solution, and obtain Ni-S electrode after natural air drying.

[0054] (3) Preparation of Ni-S / Ni-S-Mo electrode by secondary electrodeposition

[0055] After the Ni-S electrode prepared by the process (2) is obtained, the secondary deposition process is performed again. Continue to use the three-electrode system, with the Ni-S electrode obtained in (2)...

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Abstract

The invention discloses an efficient Ni-S-Mo hydrogen evolution electrode and a preparation method thereof. The method comprises the steps of removing oxidation layers and grease substances on the surface of a nickel sheet or foamed nickel through mechanical grinding, degreasing of an alkali wash mode or an electrolytic mode and acid pickling; depositing Ni, S and Mo on a pretreated conductive base body in an electro-deposition mode. Nanometer molybdenum particles serving as molybdenum sources are uniformly mixed into a clad layer for forming a clad layer structure with the excellent hydrogen evolution ability, the uniform clad layer and the high hydrogen evolution activity. The method has the advantages that the operation is simple, the production cost is low and the structure of the clad layer is firm. The hydrogen evolution catalytic active electrode prepared through the method can be widely used in the alkaline water electrolysis industry.

Description

technical field [0001] The invention relates to the field of hydrogen gas preparation, in particular to a low energy consumption Ni-S-Mo hydrogen evolution electrode and a preparation method thereof. Background technique [0002] Modern human life is inseparable from energy. Energy is the foundation of the rapid development of the modern economy and an important strategic material for social development. With the consumption of traditional fossil fuels and the increasing pressure of environmental pollution, we urgently need to develop new energy sources. Among the new energy sources that are being studied now, there are mainly hydropower resources, nuclear energy, wind energy, biomass energy, solar energy, hydrogen energy, shale gas, and ocean energy. Among the many new energy sources, hydrogen energy has the most potential for development. [0003] Currently, there are four main hydrogen production technologies. One is non-renewable hydrogen obtained by consuming fossil ...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04C25D9/08C25D15/00
CPCC25B1/04C25D9/08C25D15/00C25B11/091Y02E60/36
Inventor 许卫张菊生
Owner 天津市大陆制氢设备有限公司
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