The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1993
Filed:
Dec. 14, 1989
Applicant:
Inventors:
Konstantin Ledjeff, Bad Krozingen, DE;
Angelika Heinzel, Freiburg, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 42 ; 429 44 ; 429107 ; 429109 ;
Abstract
The invention provides a rebalance cell for a Cr/Fe redox storage system. The rebalance cell has a catalyst for the reduction of Fe.sup.3+ ions by means of hydrogen. The catalyst separates a gas chamber of the rebalance cell (holding hydrogen) and a liquid chamber of the rebalance cell (holding Fe.sup.3+ electrolyte). The catalyst is in the form of an activated charcoal made hydrophobic and coated with a platinum metal, gold or silver. The catalyst can also be in the form of tungsten carbide made hydrophobic.