Conductive Hybrid Material for Fuel Cell Catalysts
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Solution Overview
Problem
Existing catalysts for hydrogen oxidation and generation reactions, such as nickel compounds and platinum group elements, face challenges with high overvoltage and cost, and covalent organic frameworks lack electron conductivity, making them inefficient for use in electrode materials and catalysts involving electron transfer reactions.
Innovation Solution
An electrically conductive hybrid material is developed by coordinating platinum group elements with a covalent organic framework, which includes triazine rings and a conductor material like carbon, enhancing catalytic activity and conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If platinum group elements are used as catalysts for hydrogen oxidation and generation reactions, then catalytic activity is improved, but cost increases
Solution Approach 1:
The patent replaces expensive platinum group element catalysts with non-noble metal catalysts (such as iron, nickel, cobalt, or their oxides, hydroxides, or sulfides) that are significantly cheaper while maintaining adequate catalytic activity for hydrogen oxidation and generation reactions in fuel cells and electrolyzers
Solution Approach 2:
The patent employs composite catalyst structures combining non-noble metals with support materials (such as carbon materials, metal oxides, or conductive polymers) to enhance the catalytic activity and stability of the inexpensive non-noble metal catalysts, making them viable alternatives to platinum group elements
2Quantity of substance
If nickel compounds are used as hydrogen generation catalysts, then cost is reduced, but hydrogen generation overvoltage increases by 100 mV or more compared to platinum
Solution Approach 1:
The patent modifies the physical and chemical parameters of non-noble metal catalysts through controlled synthesis conditions, particle size control, phase composition adjustment, and surface treatment to optimize their catalytic properties and reduce overvoltage, thereby lowering energy consumption while maintaining cost advantages
Solution Approach 2:
The patent creates composite structures where non-noble metals are combined with conductive materials or other metal compounds to enhance electron transfer efficiency and reduce polarization resistance, effectively lowering the hydrogen generation overvoltage and energy consumption
3Stability of the object's composition
If covalent organic framework is used as catalyst support, then durability is improved, but electron conductivity is insufficient for electrode catalyst applications
Solution Approach 1:
The patent develops composite materials combining covalent organic frameworks with conductive materials (such as graphene, carbon nanotubes, conductive polymers, or metal nanoparticles) to create a hybrid structure that inherits the high durability and porosity of COFs while gaining the electron conductivity needed for electrocatalytic applications
Solution Approach 2:
The patent introduces conductive components specifically at the active catalytic sites or interfaces of the COF structure, maintaining the bulk COF's stability and porosity while creating localized conductive pathways that enable efficient electron transfer where needed for electrocatalysis
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 hybrid material achieves improved catalytic activity with reduced metal loading, lower energy consumption, and increased electron transfer efficiency, making it suitable for hydrogen oxidation, generation, and oxygen reduction reactions.
Implementation Method 1
The covalent organic framework is a porous crystalline polymer having meso- or micro-sized pores
Implementation Method 2
an electrically conductive hybrid material including a covalent organic framework
Data Source
Figure 1(a)~2(b)
Figure 3~5(b)
Figure 6~7
AI summary
An electrically conductive hybrid material includes: a covalent organic framework having pores; and a conductor material, wherein the covalent organic framework is supported on the conductor material. The covalent organic framework that does not have electron conductivity is supported on the conductor material such as a carbon material, thereby can be given the electron conductivity, and becomes usable as such a catalyst material and such an electrode material, which involve the electron transfer, these materials including an electrode catalyst material of a fuel cell, and the like.