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TiO2@C supported RuNi direct methanol fuel cell anode catalyst and preparation method thereof

A methanol fuel cell and catalyst technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of affecting catalyst stability, battery performance, easy oxidation, etc., and achieve the effect of improving catalytic oxidation performance, not easy to oxidize, and improving stability

Inactive Publication Date: 2014-09-03
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As reported the preparation of PtAgTiO X / C and Au / TiO 2 PtAg catalyst, TiO 2 Combination can reduce the amount of noble metal Pt in the catalyst, improve catalytic performance and anti-CO poisoning ability, but the amount of noble metal Pt in these catalysts is still high, and the catalyst is supported by C, which is easy to oxidize in the actual application process, affecting the catalyst. The stability and performance of the battery
porous hollow TiO 2 The preparation of non-platinum anode catalysts for direct methanol fuel cells with C as a carrier has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Porous hollow TiO 2 Preparation of nanospheres: using sol-gel method. Dissolve the calculated amount of butyl titanate in a certain amount of absolute ethanol, add a certain amount of surfactants PEG-600 and Vulcan XC-72, add a mixture of absolute ethanol, glacial acetic acid and deionized water dropwise under stirring, After hydrolyzing to form a sol, continue to stir, and after forming a gel, let it stand for 2 days, dry the powder at 80 °C for 8 hours, and then grind the powder obtained in a muffle furnace at 400 °C for 3 hours to prepare a porous hollow TiO 2 nanospheres. The consumption molar ratio of butyl titanate, dehydrated alcohol, glacial acetic acid, deionized water when preparing sol is: n 钛酸丁酯 :n 无水乙醇 :n 冰醋酸 :n 去离子水 =1:20~40:1~2.5:2~6. The amount of PEG is 1% of the total volume of butyl titanate, absolute ethanol, deionized water and glacial acetic acid. The amount of Vulcan XC-72 is to completely hydrolyze butyl titanate to finally generate Ti...

Embodiment 2

[0037] (1) Porous hollow TiO 2 Preparation of nanospheres: using sol-gel method. Dissolve the calculated amount of butyl titanate in a certain amount of absolute ethanol, add a certain amount of surfactants PEG-600 and Vulcan XC-72, add a mixture of absolute ethanol, glacial acetic acid and deionized water dropwise under stirring, After hydrolyzing to form a sol, continue to stir, and after forming a gel, let it stand for 3 days, and dry the powder at 80 °C for 9 hours in a vacuum. 2 nanospheres. The consumption molar ratio of butyl titanate, dehydrated alcohol, glacial acetic acid, deionized water when preparing sol is: n 钛酸丁酯 :n 无水乙醇 :n 冰醋酸 :n 去离子水 =1:20~40:1~2.5:2~6. The amount of PEG is 1% of the total volume of butyl titanate, absolute ethanol, deionized water and glacial acetic acid. The amount of Vulcan XC-72 is to completely hydrolyze butyl titanate to finally generate TiO 2 30% of the theoretical amount.

[0038] (2) Porous hollow TiO 2 C Preparation of nano...

Embodiment 3

[0049] (1) Porous hollow TiO 2 Preparation of nanospheres: using sol-gel method. Dissolve the calculated amount of butyl titanate in a certain amount of absolute ethanol, add a certain amount of surfactants PEG-600 and Vulcan XC-72, add a mixture of absolute ethanol, glacial acetic acid and deionized water dropwise under stirring, After hydrolyzing to form a sol, continue to stir, and after forming a gel, let it stand for 3 days, dry the powder at 80 °C for 10 hours, and then grind the powder obtained in a muffle furnace at 400 °C for 3 hours to prepare porous hollow TiO 2 nanospheres. The consumption molar ratio of butyl titanate, dehydrated alcohol, glacial acetic acid, deionized water when preparing sol is: n 钛酸丁酯 :n 无水乙醇 :n 冰醋酸 :n 去离子水 =1:20~40:1~2.5:2~6. The amount of PEG is 1% of the total volume of butyl titanate, absolute ethanol, deionized water and glacial acetic acid. The amount of Vulcan XC-72 is to completely hydrolyze butyl titanate to finally generate TiO...

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PUM

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Abstract

The invention discloses a multi-hole hollow TiO2@C supported RuNi direct methanol fuel cell anode catalyst and a preparation method thereof, and the catalyst is composed of a TiO2@C carrier and a RuNi nano-alloy. The multi-hole hollow TiO2@C nano-carrier with high ratio surface and the RuNi nano-alloy can form the multi-element catalyst in a recombination manner. With the recombination of C and the deposition of the RuNi alloy on the surface of the carrier, the electrical conductivity of the TiO2 is improved; a catalytic oxidation of TiO2 on methyl alcohol is greatly improved through the synergistic effect on TiO2 of the recombination of C and the deposition of the RuNi alloy; meanwhile, intermediate products, such as CO, generated by methyl alcohol oxidation are adsorbed and transferred to the surface of the composite catalyst and are directly deeply oxidized to obtain a final product CO2; in addition, the TiO2@C nano-carrier is stable, and is less prone to oxidation. The price of RuNi is less than that of a precious metal Pt, and the dosage of RuNi in the catalyst is small, thus, the cost of the catalyst is greatly reduced, a CO toxicity resisting capacity of the catalyst is improved, the cost of the catalyst in a direct methanol fuel cell is greatly reduced, and the property of the direct methanol fuel cell is improved.

Description

[0001] technical field [0002] The present invention relates to porous hollow TiO 2 C supported RuNi direct methanol fuel cell anode catalyst and preparation method. [0003] Background technique [0004] Direct Methanol Fuel Cell (DMFC) has the advantages of low energy consumption, high energy density, abundant sources of methanol, low price, simple system, convenient operation and low noise, and is considered to be the most promising future vehicle power and other vehicles. Promising chemical power sources have attracted widespread attention. One of the most critical materials of DMFC is the electrode catalyst, which directly affects the performance, stability, service life and manufacturing cost of the battery. The noble metal Pt has excellent catalytic performance at low temperature (less than 80°C). At present, the electrode catalysts of DMFC all use Pt as the main component, and the PtRu catalyst has stronger CO poisoning resistance and higher catalytic activity th...

Claims

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Application Information

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IPC IPC(8): H01M4/90
CPCY02E60/50H01M4/9083
Inventor 鞠剑峰石玉军高强吴东辉苏广均华平李建华
Owner NANTONG UNIVERSITY
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