Anode catalyst of PdMo/TiO2 nanowire direct methanol fuel cell and preparation method

Abstract

The invention discloses an anode catalyst of a PdMo / TiO2 nanowire direct methanol fuel cell and a preparation method. The product consists of a TiO2 nanowire and a PdMo nano-alloy. The preparation method provided by the invention composites the PdMo nano-alloy to form a multi-element catalyst by using the TiO2 nanowire with a high specific surface as a carrier. The conductivity of TiO2 is improved due to PdMo composition, and the catalytic oxidation property of the TiO2 on methanol is improved through the synergistic effect on the TiO2; and meanwhile, intermediate products, such as CO generated by methanol oxidation and the like, are adsorbed and transferred to the surface of a composite catalyst, and are directly subjected to deep oxidation, so as to obtain final product CO2. Therefore, the anti-CO poison capacity of the catalyst can be improved; the PdMo is far lower than expensive metals, such as Pt, Ru and the like in price, and the use amount in the catalyst is smaller, so that the cost of the catalyst in the direct methanol fuel cell can be greatly reduced, and the properties of the direct methanol fuel cell can be improved.

Description

technical field [0001] The present invention relates to PdMo / TiO 2 Nanowire direct methanol fuel cell anode catalyst 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, Pt is the main component of DMFC electrode catalysts, and the PtRu catalyst has stronger CO poisoning resistance and higher catalytic activity than pure Pt. It is considered to be the best cat...

AI Technical Summary

Problems solved by technology

As reported the preparation of PtRuTiO X / C and Au / TiO 2 PtRu catalyst, TiO 2 Combination can reduce the amount of noble metal Pt in the catalyst, improve catalytic performance and anti-CO poisoning ability, and has application prospects. TiO 2 The preparation of non-platinum anode catalysts for direct methanol fuel cells with nanowires as supports has not been reported yet