Patent · US Expired

High-temperature fuel cell

US6797423B2 · kind B2 · utility

0Cited by

3References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Robert Fleck · Wiesendorf, DE
Wolfram Kaiser · Bonndorf, DE

Key dates

Filing date	Sep 26, 2001
Grant date	Sep 28, 2004
Priority date	—
Expiry date	Aug 1, 2022

Classification

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

Abstract

In a high-temperature fuel cell, the problem exists that a series electrical resistance rises while the high-temperature fuel cell is operating. This rise is caused by oxidation of the fuel-gas-side surface of the bipolar plate. Oxidation of this nature is largely suppressed by an oxidation buffer that is disposed in the fuel gas chamber and takes up the oxygen.

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