POLYMER ELECTROLYTE MEMBRANE, MEMBRANE-ELECTRODE UNIT WITH IT AND FUEL CELL
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- KOLON INDUSTRIES INC
- Filing Date
- 2021-09-17
- Publication Date
- 2026-06-17
AI Technical Summary
Existing polymer electrolyte membranes in fuel cells suffer from mechanical and chemical durability issues, particularly at gas inlets and outlets, leading to decreased energy efficiency and increased resistance loss due to pinhole formation and desorption under gas pressure.
A polymer electrolyte membrane design incorporating a first segment with a first ionomer and a second segment with a higher equivalent weight (EW) ionomer, specifically a blend of fluorine-based and hydrocarbon-based ionomers, to enhance durability at vulnerable areas.
The membrane exhibits improved chemical and mechanical durability, reducing hydrogen permeability and maintaining high ionic conductivity, as evidenced by enhanced Open Circuit Voltage (OCV) durability and lower Fluoride Ion Emission Rates (FER).