Carbon Carrier Nanoparticle Composite Catalyst
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Solution Overview
Problem
Carbon-based catalyst supports, such as carbon black, face durability issues due to corrosion, and crystalline carbon forms like carbon nanotubes and nanofibers have poor dispersibility in polar solvents, leading to non-uniform platinum distribution in fuel cells and electrochemical batteries.
Innovation Solution
A carrier-nanoparticle complex is developed, featuring a carbon carrier with a polymer layer containing amine and hydrogen ion exchange groups, onto which metal nanoparticles are deposited, enhancing dispersibility and thermal stability, and facilitating proton transfer to active metal sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If crystalline carbon forms (carbon nanotube, carbon nanofiber, carbon nanocage) are used as catalyst support, then corrosion resistance is improved, but dispersibility in polar solvent deteriorates
Solution Approach 1:
The patent applies composite materials by combining crystalline carbon forms with polymer materials having hydrophilic groups. The polymer material is formed on the surface of the crystalline carbon support, creating a composite structure that integrates the corrosion resistance of crystalline carbon with the dispersibility of hydrophilic polymers in polar solvents.
Solution Approach 2:
The patent changes the surface properties of crystalline carbon supports by introducing hydrophilic groups through polymer coating. This parameter change in surface chemistry enables the support to disperse well in polar solvents while maintaining the underlying crystalline structure's corrosion resistance.
2Ease of manufacture
If carbon black is used as catalyst support, then ease of manufacture is improved, but durability deteriorates due to carbon corrosion
Solution Approach 1:
The patent creates a composite structure where carbon black is combined with polymer materials having hydrophilic groups. This composite approach maintains the ease of manufacture associated with carbon black while adding corrosion resistance through the protective polymer layer with hydrophilic functionality.
Solution Approach 2:
The patent applies local quality by providing polymer coating with hydrophilic groups specifically on the surface of the carbon support. This localized treatment preserves the bulk properties of carbon black for ease of manufacture while adding surface-level corrosion resistance and improved dispersibility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The carrier-nanoparticle complex achieves excellent metal nanoparticle dispersibility and thermal stability, increasing the utilization rate of metal nanoparticles and improving the performance of fuel cells and electrochemical batteries.
Implementation Method 1
the polymer layer comprises a polyalkyleneimine having the amine group and a hydrogen ion exchange polymer having the hydrogen ion exchange group
Data Source
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AI summary
The present specification relates to a carrier-nanoparticle complex including: a carbon carrier; a polymer layer provided on the surface of the carbon carrier and having an amine group and a hydrogen ion exchange group; and metal nanoparticles provided on the polymer layer, a catalyst including the same, an electrochemical battery or a fuel cell including the catalyst, and a method for preparing the same.