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Carbon carried Pd/oxide composite electric catalyst and preparing process thereof

An electrocatalyst and oxide technology, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problems of unfriendly environment and methanol toxicity, and achieve The effect of low price, high catalytic activity and superior performance

Inactive Publication Date: 2006-01-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The fuel used in direct alcohol fuel cells is mainly methanol. Methanol has only one carbon atom and is the simplest alcohol molecule. It is the most widely used alcohol in direct alcohol fuel cells, but methanol is toxic and unfriendly to the environment. In order to realize the application of alcohol fuel cells in mobile power sources such as mobile phones, notebook computers and electric vehicles, it is necessary to explore other alcohol or liquid fuels to replace methanol

Method used

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  • Carbon carried Pd/oxide composite electric catalyst and preparing process thereof
  • Carbon carried Pd/oxide composite electric catalyst and preparing process thereof
  • Carbon carried Pd/oxide composite electric catalyst and preparing process thereof

Examples

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Effect test

Embodiment 1

[0024] Take 0.20g of carbon black and place it in a 100ml beaker, add 15ml of isopropanol aqueous solution (isopropanol: water = 1:3), and then drop into 12.35ml of 0.1mol dm -3 Co(NO 3 ) 2 The aqueous solution was ultrasonically stirred for 10 minutes, and dried in an oven at 80°C. After drying, the above sample was subjected to the following microwave heating procedure: heating for 20 seconds, stopping for 60 seconds, repeated six times, and the reaction system was cooled to obtain a sample. X-ray diffraction confirmed that the sample was Co 3 o 4 / C.

[0025] Co prepared by the above microwave method 3 o 4 / C (wt 1:2) composite material was placed in a 100ml beaker, 15ml of isopropanol aqueous solution (alcohol: water = 1:3) was added, ultrasonically stirred for 10 minutes, and then 9.4ml of 0.1mol dm -3 PdCl 3 Hydrochloric acid aqueous solution, then slowly drop 5ml of 1.0mol dm under ultrasonic -3 NaBH 4 aqueous solution, and the resulting precipitate was wash...

Embodiment 2

[0027] Take 0.20g of carbon black and place it in a 100ml beaker, add 15ml of isopropanol aqueous solution (isopropanol: water = 1:3), and then drop into 13.10ml of 0.1mol dm -3 Mn(NO 3 ) 2The aqueous solution was ultrasonically stirred for 10 minutes, and dried in an oven at 80°C. After drying, the above sample was subjected to the following microwave heating procedure: heating for 20 seconds, stopping for 60 seconds, repeated six times, and the reaction system was cooled to obtain a sample, and X-ray diffraction confirmed that the sample was Mn 3 o 4 / C .

[0028] Mn prepared by the above microwave method 3 o 4 / C (1:2) composite material was placed in a 100ml beaker, 15ml of isopropanol aqueous solution (alcohol: water = 1:3) was added, ultrasonically stirred for 10 minutes, and then 9.4ml of 0.1mol dm -3 PdCl 3 Hydrochloric acid aqueous solution, then slowly drop 5ml of 1.0mol dm under ultrasonic -3 NaBH 4 aqueous solution, and the resulting precipitate was was...

Embodiment 3

[0030] Take 0.20g of carbon black and place it in a 100ml beaker, add 15ml of isopropanol aqueous solution (isopropanol: water = 1:3), and then drop into 4.35ml of 0.1mol dm -3 Ni(NO 3 ) 2 The aqueous solution was ultrasonically stirred for 10 minutes, and dried in an oven at 80°C. After drying, the above sample was subjected to the following microwave heating procedure: heating for 20 seconds, stopping for 60 seconds and repeated six times. After the reaction system was cooled, the sample was obtained. X-ray diffraction confirmed that the sample was NiO / C. The typical transmission electron microscope picture is as follows figure 1 .

[0031] Put the NiO / C (1:6) composite material prepared by the microwave method above into a 100ml beaker, add 15ml of isopropanol aqueous solution (alcohol:water=1:3), stir ultrasonically for 10 minutes, and then drop into 9.4ml of 0.1 mol dm -3 PdCl 3 Hydrochloric acid aqueous solution, then slowly drop 5ml of 1.0mol dm under ultrasonic -...

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Abstract

This invention relates to a carbon carried Pd / oxide compound electro catalyst and its preparation method, which adheres nm particles of Pd and an oxide on the powdered carbon surface to process the catalyst of carbon carried Pd / oxide compound, heats carbon and nitrate alternately to quickly process the oxide and reduces PdCl3 by NaBH4 to deposit Pd on the carbon carried oxide to get the catalyst.

Description

technical field [0001] The invention relates to an oxide-enhanced non-platinum carbon-supported palladium / oxide catalyst for direct alkaline alcohol fuel cells and a preparation method thereof, belonging to the field of energy materials. Background technique [0002] Fuel cells are a green energy technology. It is of great significance to solve the two major problems of "energy shortage" and "environmental pollution" that the world is currently facing. Direct alcohol fuel cells have the advantages of high energy density, low price, small size, light weight, and easy portability because the fuel does not need to be reformed and can be directly used for power generation. It has a very broad application prospect. [0003] At present, the anode electrocatalysts used in direct alcohol fuel cells (DAFC) are mainly noble metal platinum and platinum alloys. Among them, PtRu is the most studied catalyst, and it is also the most mature and widely used anti-CO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/92B01J23/44B01J23/00B01J32/00B01J37/00
CPCY02E60/50
Inventor 沈培康徐常威
Owner SUN YAT SEN UNIV
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