Patent · US Expired

PEM fuel cell

US6010798A · kind A · utility

38Cited by

6References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Albert Hammerschmidt · Erlangen, DE
Wolf-Dieter Domke · Höchstadt an der Aisch, DE
Christoph Nolscher · Dresden, DE
Peter Suchy · Erlangen, DE

Key dates

Filing date	Aug 27, 1997
Grant date	Jan 4, 2000
Priority date	—
Expiry date	Aug 27, 2017

Classification

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

Abstract

A fuel cell with a proton-conducting membrane, on which catalyst material and a collector are arranged on both sides, is characterized by the following features: on the side facing the membrane (14), the collectors (16,18) are provided with an electrically conductive gas-permeable carbon aerogel with a surface roughness of <2 .mu.m; a catalyst layer (15, 17) of platinum or a platinum alloy is in each case applied to the carbon aerogel by material bonding; and a membrane (14), deposited by plasma-chemical means, with a layer thickness of between 3 and 50 .mu.m, is located between the catalyst layers (15, 17).

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