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Nanoporous structure composite material and preparation method and alcohol catalytic property application

A nanoporous and composite material technology, applied in structural parts, fuel cells, electrochemical generators, etc., can solve the problems of insufficient Pd-based catalysts, and achieve good electrocatalytic performance, easy control, and low cost

Inactive Publication Date: 2018-05-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Pd-based catalysts are insufficient: the activity and stability still need to be greatly improved, and the preparation of noble metal-metal oxide composite catalysts can solve this problem well

Method used

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  • Nanoporous structure composite material and preparation method and alcohol catalytic property application
  • Nanoporous structure composite material and preparation method and alcohol catalytic property application
  • Nanoporous structure composite material and preparation method and alcohol catalytic property application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] with Cu 64 Ti 30 PD 5 Ni 1 Preparation of Nanoporous CuO / TiO from Amorphous Alloy Ribbons 2 / Pd-NiO composite material, the steps are as follows:

[0026] Step 1: According to the content of Ni at 1%, Cu at 64%, Ti at 30%, and Pd at 5%, an amorphous alloy strip is prepared.

[0027] Step 2: Cut the amorphous alloy strip obtained in Step 1 into strips with a thickness of 20um, a width of 20mm, and a length of 2cm.

[0028] Step 3: Take 0.05 g of the amorphous alloy strip obtained in Step 2 and 30 ml of aqueous hydrochloric acid solution with a molar concentration of 0.75 and place them together in a closed container, and place them in a drying oven with a reaction temperature of 90° C. for 5 hours.

[0029] Step 4. Wash the sample obtained after the reaction in step 3 with deionized water and absolute ethanol repeatedly, and dry it in a 40°C drying oven. The sample obtained is CuO / TiO with a nanoporous structure. 2 / Pd-NiO composites.

[0030] figure 1 (a) shows ...

Embodiment 2

[0036] with Cu 62 Ti 30 PD 5 Ni 3 Preparation of Nanoporous CuO / TiO from Amorphous Alloy Ribbons 2 / Pd-NiO composite material, identical with step two and three in embodiment 1, only be that the atomic percent content of Cu and Ni in step one is different, namely:

[0037] Step 1: Prepare an amorphous alloy strip according to the content of Ni at 3%, Cu at 62%, Ti at 30%, and Pd at 5%.

[0038] figure 1 (b) shows the CuO / TiO with nanoporous structure prepared by Example 2 2 / Pd-NiO composite material microscopic morphology photograph; The CuO / TiO that this embodiment prepares 2 / Pd-NiO composites were used in the performance test of electrocatalytic methanol and ethanol under alkaline conditions, figure 2 (a), (b) respectively show the CuO / TiO obtained in Example 2 2 Cyclic voltammetry curves of / Pd-NiO composites for methanol and ethanol.

Embodiment 3

[0040] with Cu 58 Ti 30 PD 5 Ni 7 Preparation of Nanoporous CuO / TiO from Amorphous Alloy Ribbons 2 / Pd-NiO composite material, identical with step two and three in embodiment 1, only be that the atomic percent content of Cu and Ni in step one is different, namely:

[0041] Step 1: According to the content of Ni at 7%, Cu at 58%, Ti at 30%, and Pd at 5%, an amorphous alloy strip is prepared.

[0042] figure 1 (c) in shows the CuO / TiO of nanoporous structure prepared by embodiment 3 2 / Pd-NiO composite microstructure photos. The CuO / TiO prepared in this embodiment 2 / Pd-NiO composites were used in the performance test of electrocatalysis of methanol and ethanol under alkaline conditions.

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Abstract

The invention discloses a nanoporous structure copper oxide-titanium dioxide-palladium-nickel oxide composite material and a preparation method thereof and alcohol catalytic property application. TheCuO-TiO2-Pd-NiO composite material with a uniform nanoporous structure is prepared from a Cu-Ti-Pd-Ni original amorphous alloy strip as a raw material by use of an aqueous hydrochloric acid solution as an etchant solution by a chemical de-alloying method. The method is low in cost, simple in operation, and easy to control, and has good feasibility, and the prepared CuO / TiO2 / Pd-NiO composite material has good electrocatalytic properties for alcohols.

Description

technical field [0001] The invention relates to CuO / TiO with a nanoporous structure 2 The preparation method of / Pd-NiO composite material and the application of the catalytic performance of alcohols belong to the technical field of electrochemical new energy and new materials. Background technique [0002] With the continuous development of the global economy, energy consumption continues to increase, and the world's energy demand is increasing. As a new energy source, new energy occupies an increasingly important position in the world's energy consumption structure. . Direct alcohol fuel cell is an electrochemical power generation device that directly uses alcohols (such as methanol, ethanol) as fuel to convert chemical energy into electrical energy, and then generate electricity. Due to its high energy conversion efficiency, low cost, fast fuel start-up, The advantages of environmental friendliness, simple operation, and easy portability have attracted more and more att...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/92H01M4/88H01M8/1011
CPCH01M4/8647H01M4/88H01M4/9016H01M4/92H01M8/1011H01M8/1013Y02E60/50
Inventor 牛孟影朱胜利杨贤金崔振铎
Owner TIANJIN UNIV
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