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A method for preparing pd-co-p composite film by electroless plating-replacement

A pd-co-p, chemical plating technology, applied in chemical instruments and methods, liquid chemical plating, chemical/physical processes, etc., can solve problems such as preparation difficulties, achieve simple process, high electrocatalytic activity and durability , the effect of easy availability of raw materials

Active Publication Date: 2020-08-14
ANQING NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the difficulty in preparation, there are few reports on ternary or more than ternary composite films in Pd.

Method used

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  • A method for preparing pd-co-p composite film by electroless plating-replacement
  • A method for preparing pd-co-p composite film by electroless plating-replacement

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Embodiment Construction

[0022] The present invention will be further described below in combination with specific embodiments.

[0023] Step 1, as attached figure 1 As shown, the graphite plate substrate was subjected to pretreatment processes such as alkaline degreasing, pickling, water washing, and drying as a deposition substrate, and 250 mL of ionic liquid 1-butyl-3-methylimidazolium chloride (BMIMCl) was put into the plating substrate. tank, and then add 10g of cobalt-containing ionic liquid [BMIM]CoCl to the ionic liquid 3 , 3g sodium hypophosphite NaH 2 PO 2 And 0.5 grams of dimethylhydantoin (DMH), ultrasonic dispersion, stirring speed is 300 rpm, the temperature is maintained at 85 ° C for electroless plating for 30 minutes; take out the plated parts and wash them with ethanol and deionized water successively, and dry them to get final product Co-P alloy coating.

[0024] Step 2, in an inert gas environment, put the anhydrous low-melting point mixed solvent of 300mL of choline chloride a...

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Abstract

The invention relates to a method for preparing a Pd-Co-P composite membrane through chemical plating and replacement. The method comprises the following steps that firstly, 1-butyl-3-methylimidazole chlorine (BMIMCl), cobalt-containing ionic liquid [BMIW]CoCl3 and sodium hypophosphite NaH2PO2 serve as chemical plating raw materials, a small amount of dimethyl hydantoin serves as a solubilizer, and a certain temperature and stirring speed are maintained; chemical plating is conducted on a graphite plate; and an obtained chemical plating part is placed in replacement liquid containing palladium ionic liquid Ch2PdCl4 and soaked under the stirring effect and at a certain temperature, and thus the Pd-Co-P composite membrane is obtained. The composite membrane obtained through the method presents a 3D network architecture and has higher electrocatalytic activity and durability, the working procedure condition requirements are low, and the composite membrane catalyst preparation process has developing prospects.

Description

technical field [0001] The invention relates to a method for preparing a Pd-Co-P composite film by using electroless plating-replacement, and belongs to the technical field of catalyst preparation. Background technique [0002] Currently, fuel cell catalysts widely researched and applied mainly use Pt as the active component or the main active component. However, Pt is expensive and has poor anti-poisoning ability, which has set obstacles to the rapid development and promotion of fuel cells. Therefore, exploring and developing new non-Pt catalysts is of great significance to promote the commercialization of fuel cells. Pd is a better choice to replace Pt. Pd has better anti-poisoning ability in the catalytic process, and its price is only half of that of Pt. 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. People usually modify pure Pd by introducing other metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/50B01J27/185H01M4/92
CPCB01J27/1856B01J35/0033C23C18/50H01M4/921Y02E60/50
Inventor 杜荣斌周峰刘涛夏宏宇王伟
Owner ANQING NORMAL UNIV
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