Patent · US Active

Gas diffusion layer for fuel cells

US12315940B2 · kind B2 · utility

0Cited by

2References

19Claims

0Family size

Assignee

Carl Freudenberg KG · DE

Inventors

Achim Bock · Weinheim, DE
Kristof Klein · Weinheim, DE
Christoph Rakousky · Ober-Ramstadt, DE
Hannes Barsch · Heidelberg, DE

Key dates

Filing date	Nov 5, 2020
Grant date	May 27, 2025
Priority date	—
Expiry date	Jan 15, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A gas diffusion layer for a fuel cell includes: a) a flat, electrically conductive fiber material; and b) a microporous layer on one surface of the fiber material. The gas diffusion layer has, with respect to a base area thereof (in an xy plane), at least one property gradient relating to at least one chemical and/or physical property.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.