Platinum-based catalyst carrier of direct methanol fuel cell and preparation method thereof

Abstract

The invention discloses a platinum-based catalyst carrier of a direct methanol fuel cell and a preparation method thereof. The catalyst carrier is a graphite-like carbon nitride modified carbon compound material. The preparation method comprises the following steps: 1. weighing a graphite-like carbon nitride precursor and a carbon material; mixing uniformly to obtain a mixture A; 2. putting the mixture A into a pipe type nitrogen atmosphere in a semi-sealed manner and raising the temperature to 500-700 DEG C at the temperature raising rate of 2-10 DEG C per minute and keeping for 1-5 hours to obtain a material B; and 3. washing the material B by using ultrapure water and filtering; and drying in vacuum to obtain the graphite-like carbon nitride modified carbon compound material. With the adoption of the method for modifying graphite-like carbon nitride on the surface of the carbon material, the modification ratio of the graphite-like carbon nitride can be conveniently adjusted and controlled so that the carrier material keeps an excellent conductive performance. Furthermore, the catalytic activity and the stability can be obviously improved by the catalysis promotion effect of the graphite-like carbon nitride and the strong adsorption effect to PtRu metal nano particles.

Description

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AI Technical Summary

Benefits of technology

This patented technology uses special materials called graphene- like carbon nitrides (GNC) instead of traditional metals for use as carriers in electrocatalysis processes such as hydrogen oxidizing reactions or oxygen reduction reaction. These new materials have better electron conduction properties than regular ones while still being strong enough to withstand high temperatures during operation without losing their shape over time. Additionally, these materials are easy to modify through changes made from precursor sources, resulting in improved activity at both cathodic and anodes. Overall, this innovative design improves the efficiency and durability of MEAs used in batteries.

Problems solved by technology

This patented technical problem addressed in this patents relates to reducing costs while maintaining good catalysis properties when developing direct methyl alcohol fuels used in automobiles without compromised safety standards. Current techniques involve expensive noble metals like platinum, ruthenium, palladium, molydenum, tantalum, tungsten, niobium, vanadia, sulfuric acid, hydrogen permeability membranes made from polymers containing poly(phenolsulfonimide)-acetone)/rhenosulphosphorus complexes, and nonlinear mechanisms involving electron transfer between two atoms called triple bonds. These challengings make achieving both desired results through improved catalyst structure design and stabilized catalyst activation process remains eligible.

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