Fuel Cell Cathode Catalyst Design for Enhanced Durability and Efficiency
Here’s PatSnap Eureka !
Summary
Problems
The challenge in fuel cell technology is to develop a cathode catalyst layer that balances durability, power performance, and economic efficiency, particularly in polymer electrolyte membrane fuel cells, where reduced platinum content leads to decreased durability and power output.
Innovation solutions
Incorporating heat-treated ordered mesoporous carbon, with specific weight percentages and pore dimensions, into the cathode catalyst layer, along with optional Co or Ru, and using a method involving heat treatment, dispersion with an ionomer, and coating on a support film to enhance structural stability and gas transfer routes.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If platinum content is reduced to lower cost, then economic efficiency is improved, but power and durability deteriorate
Why choose this principle:
The patent employs ordered mesoporous carbon with controlled pore size (3-10 nm) and pore volume (0.2-0.8 mL/g) to create a three-dimensional porous structure in the cathode catalyst layer. This porous structure increases the effective surface area for catalytic reactions, allowing reduced platinum loading while maintaining or improving power density and durability through enhanced mass transport and catalyst utilization.
Principle concept:
If platinum content is reduced to lower cost, then economic efficiency is improved, but power and durability deteriorate
Why choose this principle:
The patent creates a composite cathode catalyst layer combining Pt/C catalyst, ordered mesoporous carbon, and ionomer in specific weight ratios (Pt/C: 0.1-0.5 mg/cm², ordered mesoporous carbon: 0.05-0.5 mg/cm², ionomer: 0.05-0.5 mg/cm²). This composite structure synergistically combines the catalytic activity of Pt/C with the structural stability and mass transport properties of ordered mesoporous carbon, achieving improved performance at lower platinum content.
Application Domain
Data Source
AI summary:
Incorporating heat-treated ordered mesoporous carbon, with specific weight percentages and pore dimensions, into the cathode catalyst layer, along with optional Co or Ru, and using a method involving heat treatment, dispersion with an ionomer, and coating on a support film to enhance structural stability and gas transfer routes.
Abstract
Disclosed is a cathode catalyst layer for fuel cells including heat-treated ordered mesoporous carbon, wherein the heat-treated ordered mesoporous carbon is present in an amount of 1% by weight to 15% by weight, with respect to the total weight of the cathode catalyst layer for fuel cells, and a method of manufacturing the same.