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PtCu electric catalyst for fuel battery, preparation method and application thereof

An electrocatalyst, fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of restricting the commercialization process of fuel cells, low reserves, high cost, and achieve excellent electrocatalytic methanol oxidation performance, large application and development. Foreground effect

Active Publication Date: 2016-10-26
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As we all know, catalyst is one of the most critical materials in fuel cells. In proton exchange membrane fuel cells, Pt-based nanomaterials are difficult to replace catalysts in proton exchange membrane fuel cells. Restricts the commercialization of fuel cells

Method used

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  • PtCu electric catalyst for fuel battery, preparation method and application thereof
  • PtCu electric catalyst for fuel battery, preparation method and application thereof
  • PtCu electric catalyst for fuel battery, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Dissolve 0.5 g of triblock copolymer P123 in 20 mL of double-distilled water by ultrasonic stirring; add 1 mL of chloroplatinic acid hexahydrate (0.8 g / mL), 3 mg of anhydrous copper chloride and 40 mg potassium iodide, stirred, ultrasonically dissolved, and mixed evenly.

[0032] (2) Transfer the mixed solution to the liner of a 50 mL polytetrafluoroethylene reactor, seal the reactor tightly, place it in a blast drying oven, and react at 180°C for 12 hours.

[0033] (3) Naturally cool to room temperature, centrifuge the black suspension obtained after the reaction at 10,000 r / min, wash twice with twice distilled water, then three times with absolute ethanol, and finally add the washed product to The PtCu electrocatalyst for fuel cells can be obtained by dispersing and protecting in absolute ethanol.

[0034] figure 1 Shown is the transmission electron microscope (TEM) figure of the PtCu electrocatalyst for the fuel cell prepared by the present embodiment, by fig...

Embodiment 2

[0038] (1) Dissolve 0.5 g of triblock copolymer P123 in 20 mL of double-distilled water by ultrasonic stirring; add 1 mL of chloroplatinic acid hexahydrate (0.8 g / mL), 3 mg of anhydrous copper chloride and 20 mg potassium iodide, stirred, ultrasonically dissolved, and mixed evenly.

[0039] (2) Transfer the mixed solution to the liner of a 50 mL polytetrafluoroethylene reactor, seal the reactor tightly, place it in a blast drying oven, and react at 180°C for 12 hours.

[0040] (3) Naturally cool to room temperature, centrifuge the black suspension obtained after the reaction at 10,000 r / min, wash twice with twice distilled water, then three times with absolute ethanol, and finally add the washed product to The PtCu electrocatalyst for fuel cells can be obtained by dispersing and protecting in absolute ethanol.

[0041] image 3 Shown is the TEM figure of the PtCu electrocatalyst for the fuel cell prepared by the present embodiment, by image 3 It can be seen that the prep...

Embodiment 3

[0045] (1) Dissolve 0.5 g of triblock copolymer P123 in 20 mL of double-distilled water by ultrasonic stirring; add 1 mL of chloroplatinic acid hexahydrate (0.8 g / mL), 3 mg of anhydrous copper chloride and 1 mg potassium iodide, stirred, ultrasonically dissolved, and mixed evenly.

[0046] (2) Transfer the mixed solution to the liner of a 50 mL polytetrafluoroethylene reactor, seal the reactor tightly, place it in a blast drying oven, and react at 180°C for 12 hours.

[0047] (3) Naturally cool to room temperature, centrifuge the black suspension obtained after the reaction at 10,000 r / min, wash twice with twice distilled water, then three times with absolute ethanol, and finally add the washed product to The PtCu electrocatalyst for fuel cells can be obtained by dispersing and protecting in absolute ethanol.

[0048] Figure 5 Shown is the TEM figure of the PtCu electrocatalyst for the fuel cell prepared by the present embodiment, by Figure 5 It can be seen that the as-p...

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Abstract

The invention relates to a PtCu electric catalyst for a fuel battery and a preparation method thereof. The method adopts the one-step hydro-thermal synthesis technology, the synthesis method comprises the following steps: dissolving triblock copolymer P123 in the secondary distilled water; adding chloroplatinic acid hexahydrate, cupric chloride and potassium iodide in a P123 solution, stirring, ultrasonically dissolving; transferring the mixed solution to a liner of a polytetrafluoroethylene reaction kettle in 50mL, tightly sealing the reaction kettle, and placing the reaction kettle in a blast drying oven, reacting for 6-12 hours at 120-200 DEG C; naturally cooling to room temperature, centrifuging, washing for three to five times to obtain the PtCu electric catalyst for the fuel battery. The triblock copolymer P123 is simultaneously used as the protection agent and the reducing agent, the potassium iodide is used as the morphology control agent, the obtained PtCu electric catalyst is good in dispersibility, has a regular cubic appearance, and excellent performance of electrically catalyzing and oxidizing methanol, and is a fuel battery catalyst which has excellent development prospects.

Description

technical field [0001] The invention belongs to the technical field of fuel cells and relates to a method for preparing a catalyst, in particular to a method for preparing a PtCu electrocatalyst for a fuel cell. Background technique [0002] With the rapid development of the global economy, energy and environmental issues have become the focus of world attention. A fuel cell is a power generation device that converts the chemical energy of fuel directly into electrical energy. It is highly efficient and clean, and has become one of the hot spots in the development of clean energy today. Among them, the proton exchange membrane fuel cell (PEMFC) is the power source most likely to be applied to electric vehicles, distributed power stations and portable mobile power sources due to its low temperature operation, high energy density, and fast start-up. focus on. As we all know, catalyst is one of the most critical materials in fuel cells. In proton exchange membrane fuel cells,...

Claims

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Application Information

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IPC IPC(8): H01M4/92
CPCH01M4/921Y02E60/50
Inventor 周新文杨翼代忠旭张荣华罗来明谌鹏程
Owner CHINA THREE GORGES UNIV
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