Process of preparing Ni-W-Fe-La nanocrystalline hydrogen evolution electrode material through pulse electrodeposition

A technology of pulse electrodeposition and hydrogen evolution electrode, which is applied in the field of pulse electrodeposition to achieve the effects of non-deterioration, simple operation, and stable plating solution

Inactive Publication Date: 2010-03-10
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Preparation of Ni-W-Fe-La nanocrystalline hydrogen evolution electrode material plating so

Method used

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Embodiment

[0038] First, the carbon steel substrate should be sanded, chemically degreased, ultrasonically degreased, and dilute acid activated before performing pulse electrodeposition.

[0039] 1. Formula and process of chemical degreasing liquid:

[0040] NaOH 70g / L

[0041] NaCO 3 30g / L

[0042] Na 3 PO 4 12H 2 O 20g / L

[0043] NaSiO 3 8g / L

[0044] Nonylphenol polyoxyethylene ether (OP-10) 1g / L

[0045]Temperature (℃) 80-90℃

[0046] Oil removal time (min) 30min.

[0047] 2. Formula and process of dilute acid activation solution:

[0048] 5% (mass percent concentration) hydrochloric acid solution 70-80mL

[0049] Activation time (min) 5min

[0050] 3. Preparation of Ni-W-Fe-La nanocrystalline hydrogen evolution electrode material plating solution formula and process conditions by pulse electrodeposition:

[0051] NiSO 4 ·6H 2 O 24g / L

[0052] NiCl 2 2H 2 O 4g / L

[0053] Na 3 WO 4 2H 2 O 35g / L

[0054] (NH 4 ) 3...

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Abstract

The invention discloses a process of preparing Ni-W-Fe-La nanocrystalline hydrogen evolution electrode material through pulse electrodeposition. The method for preparing the plating solution comprisesthe following steps: 1) dissolving NiSO4.6H2O, NiCl2.2H2O, Na3WO4.2H2O, (NH4)3C6H5O7, C6H8O7.H2O, H3BO3, (NH4)2Fe(SO4)2.6H2O, sodium lauryl sulfate and saccharin with distilled water; 2) dissolving La2O3 by using hydrochloric acid with the volume ratio of 1:1; 3) mixing the solutions of NiSO4.6H2O and NiCl2.2H2O evenly, pouring Na3WO4.2H2O solution in the mixed solution, fully stirring, then adding C6H8O7.H2O solution in the precipitate, fully stirring the solution to be clear, adding a solution with La<3+> in the clear solution, finally adding solutions of (NH4)3C6H5O7, (NH4)2Fe(SO4)2.6H2O,H3BO3, sodium lauryl sulfate and saccharin to mix evenly, diluting; and 4) adjusting the pH value with 5wt% of aqueous ammonia and hydrochloric acid to 5.5-6.5. The process of the invention has simple, convenient and controllable operation and stable plating solution which is hard to deteriorate.

Description

technical field [0001] The invention relates to the technical field of pulse electrodeposition, in particular to a process for preparing Ni-W-Fe-La nanocrystal hydrogen evolution electrode material by pulse electrodeposition. Background technique [0002] Hydrogen is one of the ideal clean energy sources and an important chemical raw material. Hydrogen has a wide range of sources, abundant resources, easy storage and transportation, high energy density, clean and non-polluting, and renewable, so it has become a clean energy that has attracted more attention. Hydrogen production by electrolysis of water is an important means to achieve industrialization and low-cost production of hydrogen. Because the electrolytic product has a strong corrosion effect on the cathode, and it is intensified with the increase of temperature, which greatly affects the service life of the cathode. Therefore, the research and development of hydrogen evolution electrode materials with high catalyti...

Claims

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Application Information

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IPC IPC(8): C25B11/04C25B1/04C25D3/56C25D5/18
CPCY02E60/366Y02E60/36
Inventor 刘峥张学会
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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