Method for preparing loaded carbon-based anode catalysts for fuel batteries and application of loaded carbon-based anode catalysts

Abstract

The invention belongs to a loaded carbon-based anode catalyst material for fuel batteries, and discloses a method for preparing loaded carbon-based anode catalysts for fuel batteries. Mesoporous carbon-based carriers are prepared on the basis of porous crystalline-state metal organic framework materials, and precious metal Pt is loaded by the mesoporous carbon-based carriers, so that catalyst materials can be prepared by the aid of the method. The loaded carbon-based anode catalysts are prepared by the aid of two-step preparation technologies. The method includes carrying self-assembly on an organic ligand trimesic acid and copper acetate in mixed solution of N, N-dimethylformamide, ethyl alcohol and water to obtain the porous metal organic framework materials; carrying out a series of carbonization and acid etching treatment to obtain mesoporous carbon materials; loading nano-particles of the precious metal platinum (Pt) on the mesoporous carbon materials by the aid of ultrasonic-assisted technologies; preparing the catalyst materials with the uniformly distributed Pt nano-particles with uniform particle sizes and the diameters of 2-3 nm. The types of loaded precious metal and the loading capacity can be adjusted. The method has the advantage that the catalysts are stable and superior in catalytic activity when used for electrically catalytically oxidizing methanol and can be used as candidate materials for anode catalysts for the direct methanol fuel batteries and the like.

Description

technical field [0001] The invention belongs to the field of preparation technology of crystalline materials and their composite catalyst materials and electrocatalysis application, and specifically relates to a classical porosity constructed by self-assembly of tribasic carboxylic acid as an organic ligand and copper acetate at room temperature through a coordination chemical process The metal-organic framework material and the application of electrocatalytic oxidation of methanol and its analogs after the material is loaded with noble metal platinum to form a catalyst material after a series of calcination and etching treatments. Background technique [0002] As a clean power source in the future, direct methanol fuel cells have attracted extensive attention and research due to their advantages of low operating temperature, easy fuel storage and transportation, high energy efficiency, low pollution and fast start-up of fuel, and the anode catalyst is an important component ...

AI Technical Summary

Problems solved by technology

It is known that noble metals such as Pt and Pd are highly efficient catalysts for electrocatalytic oxidation of methanol, but they often face some problems in the actual application process. They are often prone to agglomeration and reduce the catalytic effect. One of the solutions is to load noble metal nanoparticles on Various solid supports to protect them from agglomeration while reducing the amount of precious metals used

Images