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Direct methanol fuel cell (DMFC) nano PdNi (lead nickel)/mesoporous TiO2 (titanium dioxide) membrane anode and preparation method thereof

A methanol fuel cell, nanotechnology, applied in battery electrodes, nanotechnology for materials and surface science, nanotechnology, etc., to achieve the effects of improving CO poisoning resistance, improving electrical conductivity, and improving battery performance

Inactive Publication Date: 2013-06-12
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano PdNi / Mesoporous TiO 2 Membrane catalyst is a non-platinum catalyst, which has good catalytic performance for methanol and anti-CO poisoning performance. The membrane anode formed by combining with titanium plate can be used as the anode of direct methanol fuel cell, which has not been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Pretreatment of the titanium plate: the titanium plate is polished with metallographic sandpaper, ultrasonically degreased in acetone for 15 minutes, then washed with methanol or ethanol in turn, treated with 1 mol / L HF for 10 minutes, and ultrasonically cleaned with twice distilled water for 3 times ,drying.

[0015] 2) Press PdNi / Mesoporous TiO 2 W in the membrane catalyst PdNi =1%, molar ratio n Pd :n Ni For a 1:1 calculation, the calculated amount of PdCl 2 and NiCl 2 Dissolve with a certain amount of absolute ethanol and deionized water to form a solution, wherein the volume of absolute ethanol is the same as that of step 3), and the quality of deionized water is half of that of the water in step 3);

[0016] 3) TiO 2 Preparation of sol: Dissolve the calculated amount of butyl titanate in a certain amount of absolute ethanol, and add the calculated amount of surfactant Pluronic P-123 (EO 20 PO 70 EO 20 , Aldrich, molecular weight 5800), after dissolving...

Embodiment 2

[0019] In step (2), according to the final synthesized catalyst W PdNi =3%, all the other are with embodiment 1.

Embodiment 3

[0021] In step (2), according to the final synthesized catalyst W PdNi =5%, all the other are with embodiment 1.

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Abstract

The invention discloses a direct methanol fuel cell (DMFC) nano PdNi (lead nickel) / mesoporous TiO2 (titanium dioxide) membrane anode and a preparation method thereof. The product consists of a titanium plate and a nano PdNi / mesoporous TiO2 membrane catalyst. The DMFC nano PdNi / mesoporous TiO2 membrane anode is compounded by the nano PdNi / mesoporous TiO2 membrane catalyst and the titanium plate, wherein the nano PdNi / mesoporous TiO2 membrane catalyst consists of PdNi nano alloy and high specific surface mesoporous TiO2 membrane. PdNi alloy can be used for improving the conductivity of TiO2, the synergistic effect of PdNi to TiO2 can be used for improving the catalytic oxidation performance of TiO2 to methanol, and at the same time, CO (carbon monoxide) and the like intermediate products generated by methanol oxidation are adsorbed and transmitted to the surface of the composite membrane catalyst and are directly deeply oxidized into the end product CO2 (carbon dioxide), so that the CO poisoning capability resistance of the catalyst is improved; due to the price of PdNi far lower than that of precious metals such as Pt (platinum) and Ru (ruthenium), and the dosage of PdNi in the membrane catalyst is little, and the compounding of PdNi and the titanium plate is used for the anode of a DMFC, so that the manufacturing cost of the DMFC can be greatly reduced, and the performance of the DMFC is improved.

Description

technical field [0001] The invention relates to a direct methanol fuel cell nano PdNi / mesoporous TiO 2 Membrane anode and preparation method. Background technique [0002] 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 than pure Pt. It is considered to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/92H01M4/88B82Y30/00
CPCY02E60/50
Inventor 鞠剑峰吴东辉石玉军章琴苏广均华平李建华
Owner NANTONG UNIVERSITY
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