Patent · US Active

Ink for producing catalyst layers

US7906452B2 · kind B2 · utility

2Cited by

6References

16Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Walter Behl · Blankenbach, DE
Marco Lopez · Frankfurt, DE

Key dates

Filing date	Mar 25, 2006
Grant date	Mar 15, 2011
Priority date	—
Expiry date	Jul 29, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an ink for producing catalyst layers for electrochemical devices. The ink comprises catalyst material, ionomer material, water and at least one organic solvent. The organic solvent belongs to the class of tertiary alcohol's and/or the class of aliphatic diketones and bears functional groups which are stable to oxidative degradation in the ink. This prevents formation of decomposition products in the ink. The ink of the invention displays a high storage stability and is used for producing catalyst-coated substrates for electrochemical devices, in particular fuel cells (PEMFCs, DMFCs).

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