Direct methanol fuel cell anode catalyst and preparation

Abstract

The present invention provides a direct methanol fuel cell anode catalyst and its preparing method, the product is composed of a porous-nano TiO2 or porous-nano TiO2-SiO2 and active carbon, Pt, Ru. A multivariant catalyst is formed by combined highly active porous-nano TiO2 or porous-nano TiO2-SiO2 and active carbon, Pt, Ru, the surface of TiO2 or TiO2-SiO2 deposits a little noble metal Pt, Ru, the PtRu / TiO2 or PtRu / TiO-SiO2 composite powder of high activity is formed, noble metal Pt and CO generated by methanol anodic oxidation are absorbed, transferred to the surface of composite powder, and overoxidized to final product CO2, reduces the use of noble metal such as Pt, Ru, greatly enhances CO inhibiting ability of catalyst.

Description

Technical field:

[0001] The invention relates to a direct methanol fuel cell anode catalyst and a preparation method thereof. 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 catalyst for DMFC ...