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:
Mar. 23, 2010
Filed:
Nov. 06, 2003
Volker Hennige, Duelmen, DE;
Christian Hying, Rhede, DE;
Gerhard Hoerpel, Nottuln, DE;
Petr Novak, Brugg, CH;
Jens Vetter, Wuerenlingen, CH;
Volker Hennige, Duelmen, DE;
Christian Hying, Rhede, DE;
Gerhard Hoerpel, Nottuln, DE;
Petr Novak, Brugg, CH;
Jens Vetter, Wuerenlingen, CH;
Degussa AG, Duesseldorf, DE;
Abstract
A separator for an electrochemical cell, comprising (A) a flexible perforate support, (B) a porous first ceramic material which fills the perforations in the support and which (i) has a pore structure which is characterized by an average pore size, and (ii) is suitable for receiving an ion-conducting electrolyte, wherein (C) the electrolyte-contactable pore surface of the first porous ceramic material is covered with fine particles of a further material to extend the use life, the average size of the fine particles being in the range from 0.5 to 30% and preferably in the range from 1 to 15% of the average pore size of the ceramic material.