Composition, compound body, and method for raising utilization ratio of catalyst

Abstract

The invention discloses a composition for raising use ratio of catalyst for fuel cell. The composition includes catalyst, ion macromolecules of proton conduction, and couplant. Using function group B1, the couplant binds catalyst or carrier of catalyst; and using function group B2 the couplant binds ion macromolecules of proton conduction. The invention also discloses corresponding method including following steps: (1) using supersound to break up catalyst; (2) adding couplant to generate bonding to catalyst; and (3) adding high molecular fluoride to generate bonding to couplant so as to formcomposition of catalyst - couplant - high molecular fluoride in order to form stable dispersion. In step (2), the couplant uses a function group B1 to bond to catalyst, and uses a function group B2 to bind to high molecular fluoride.

Description

Compositions, complexes and methods for improving catalyst utilization technical field The invention relates to a composition and method for improving the utilization rate of fuel cell catalysts, especially a compound formed by adding a coupling agent to bond catalysts and polymers, and utilizing the original necessary components of the catalyst slurry Composition and method for stably dispersing polymer fluoride to improve fuel cell catalyst utilization. Background technique Fuel cell (FuelCell) is one of the most feasible methods to solve energy problems and environmental pollution in the future due to its high conversion efficiency, no pollution, and fast refueling. The Direct Methanol Fuel Cell (DMFC), which directly adds methanol as fuel, has great potential in the application of portable electronic products. In the current development of fuel cell technology, only the precious metal Pt is the most suitable catalyst. However, Pt is the only material that cannot be m...

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Problems solved by technology

In the past, the research on the preparation of catalyst slurry only considered adding dispersion energy to the equipment, adjusting the type and viscosity of the solvent, adjusting the solubility between the polymer and the solvent, or using a surfactant, but did not consider the relationship between the polymer and the catalyst particles. The problems faced by the adsorptive properties include: (1) Catalyst particles are easy to aggregate and discharge polymers; (2) Phase separation and cracks occur in the coating / drying process; the only solution is to solve the adsorptive properties of polymers and catalysts. Therefore, solving the problem of low utilization rate of catalysts from the force between polymers and catalyst molecules has become a topic worthy of research

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