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A method for preparing pd-fe-co-b composite membranes by electroplating-replacement

A pd-fe-co-b, fe-co-b technology, applied in the field of alloy catalyst preparation, can solve problems such as preparation difficulties, achieve high repeatability, high electrocatalytic activity and chemical stability, and simple operation. Effect

Active Publication Date: 2019-10-25
ANQING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the difficulty of preparation, there are few reports on the composite membrane of quaternary or more than quaternary in Pd.

Method used

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  • A method for preparing pd-fe-co-b composite membranes by electroplating-replacement

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Effect test

Embodiment Construction

[0025] The present invention will be further described below in combination with specific embodiments.

[0026] Step 1, get a certain amount of methyl butyl imidazole chloride (BMIMCl), iron-containing ionic liquid (BMIMFeCl 3 ), cobalt-containing ionic liquid BMIMCoCl 3 , ascorbic acid, and sodium saccharin were dissolved in distilled water to obtain a clear mixed solution, and sodium tetraborate Na was slowly added dropwise under rapid stirring 2 B 4 o 7 , and then add distilled water to this solution to 400mL and stir, use a straw to absorb an appropriate amount of hydrochloric acid and drop it into the mixed solution until the solution reaches the specified pH value, and pour it into the electroplating tank as the electroplating solution for later use. Carbon steel is used as the anode, and the copper sheet is used as the deposition substrate. After the substrate is polished, degreased, pickled and other pre-treatment processes, it is placed in the electroplating tank, ...

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Abstract

The invention discloses a method for preparing a Pd-Fe-Co-B composite film through electroplating-replacement. The method comprises steps as follows: BMIMCl (1-butyl-3-methylimidazolium chloride), an iron-containing ionic liquid BMIMFeCl3, a cobalt-containing ionic liquid BMIMCoCl3, ascorbic acid, adipic acid, saccharin sodium and Na2B4O7 are taken as electroplating materials, electroplating is performed on a red copper piece, and Fe-Co-B alloy plating part is obtained; then, the plating part is put in a palladium chloride aqueous solution to be soaked for a period of time, and the Pd-Fe-Co-B composite film is prepared through a replacement reaction. The Pd-Fe-Co-B composite film belongs to an amorphous and porous multifunctional surface composite and has higher electrocatalytic activity and chemical stability. The method is simple to operate, high in repeatability and lower in cost.

Description

technical field [0001] The invention relates to a method for preparing a Pd-Fe-Co-B composite film by electroplating-replacement, and belongs to the technical field of alloy catalyst preparation. Background technique [0002] Ethylene glycol (EG) is considered to be a good potential fuel for direct alcohol fuel cells due to its non-toxic, flammable and producible via renewable biomass resources. Therefore, it is of great importance to develop high-efficiency electrocatalysts for direct ethylene glycol fuel cells (DEGFCs). significance. In the past few years, Pd-based electrocatalysts have attracted extensive attention. Compared with platinum, Pd has better anti-poisoning ability in the catalytic process, and the price is only half of that of Pt, so it has a good application prospect in the field of fuel cells. How to further improve the catalytic performance of Pd is the key to replace Pt catalyst with Pd. Recently, the addition of some metals, such as Fe, Co, Cu, and Ni,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C23C18/42C23C28/02
CPCC23C18/42C23C28/021C25D3/562
Inventor 刘涛杜荣斌周峰夏宏宇王伟
Owner ANQING NORMAL UNIV