Patent · US Active

Electrocatalyst for fuel cells and method for producing said electrocatalyst

US9548498B2 · kind B2 · utility

2Cited by

0References

21Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Barbara Klose-Schubert · Frankfurt am Main, DE
Daniel Herein · Frankfurt, DE
Marco Lopez · Frankfurt, DE
Carsten Becker · Weingarten, DE

Key dates

Filing date	Dec 18, 2012
Grant date	Jan 17, 2017
Priority date	—
Expiry date	Jul 11, 2033

Classification

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

Abstract

The invention relates to a carbon-free electrocatalyst for fuel cells, containing an electrically conductive substrate and a catalytically active species, wherein the conductive substrate is an inorganic, multi-component substrate material of the composition 0X1-0X2, in which 0X1 means an electrically non-conductive inorganic oxide having a specific surface area (BET) in the range of 50 to 400 mVg and 0X2 means a conductive oxide. The non-conductive inorganic oxide 0X1 is coated with the conductive oxide 0X2. The multi-component substrate preferably has a core/shell structure. The multi-component substrate material 0X1-0X2 has an electrical conductivity in the range>0.01 S/cm and is coated with catalytically active particles containing noble metal. The electrocatalysts produced therewith are used in electrochemical devices such as PEM fuel cells and exhibit high corrosion stability.

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