New Anodic Catalysts Preparation And Characterization For Direct Liquid Fuel Cell

Methanol and formic acid have many advantages, such as abundant sources, cheap price, and convenient strorage and transportation, etc. The direct methanol fuel and direct formic acid fuel cell can directly convert chemical energy into electricity, as a portable mobile power supplication has a broad development prospects. At present, the cost and the performance as two outstanding problems, which were seriously affected by the activity and stability of the anodic catalysts, still restricted direct liquid fuel battery mass commercialization. This paper will focus on the direct liquid fuel battery and rational design of anode catalysts in electrochemical performance test research. Details are as follows:(1) Mo2C, TiO2modified multiwalled carbon nanotubes as catalyst carrier supported Pt for methanol electrooxidation.The results show that the introduction of Mo2C and of TiO2has a positive role for electric catalytic oxidation of methanol, It can not only improve the methanol catalytic oxidation reaction speed, also help catalyst for reducing the generation of CO poisoning species, further improve the stability of the catalyst, we also have made a further research of the influence mechanism.(2) Highly active catalysts for formic acid electrooxidation were prepared according to the ’Hydrogen Spillover Effect’. Transition metal compounds due to its unique physical and chemical properties, by combining with Pd atoms, applied to the electrochemical catalytic oxidation formic acid catalyst, in theory can contribute to the electric catalytic oxidation of formic acid. Due to the ’Hydrogen Spillover Effect’ of MOx and WC, we introduce them to the catalyst, the experiments results showed that,comparing with the commercial Pd/C catalyst, the formic acid oxidation and catalyst performance attenuation got obvious improvemend by the addition of MOx or WC.