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. 28, 2006
Filed:
Apr. 29, 2003
Peter Birke, Ellwangen, DE;
Fatima Birke-salam, Ellwangen, DE;
Thomas Woehrle, Ellwangen, DE;
Peter Haug, Ellwangen, DE;
Konrad Holl, Aalen-Dewangen, DE;
Heinrich Stelzig, Rosenberg, DE;
Dejan Ilic, Ellwangen, DE;
Peter Birke, Ellwangen, DE;
Fatima Birke-Salam, Ellwangen, DE;
Thomas Woehrle, Ellwangen, DE;
Peter Haug, Ellwangen, DE;
Konrad Holl, Aalen-Dewangen, DE;
Heinrich Stelzig, Rosenberg, DE;
Dejan Ilic, Ellwangen, DE;
Varta Microbattery GmbH, , DE;
Abstract
A method for producing an electrochemical element having at least one lithium-intercollating electrode and an organic electrolyte, at least one positive electrode, at least one negative electrode and at least one separator are joined together to form an element, with the separator being a porous matrix composed of at least about 60% by weight of a ceramic material A, which contains lithium ions, and a polymer as a binding agent. The resulting element is then introduced into a housing and impregnated with a liquid organic electrolyte B, whose conductive salt contains lithium ions, so that the ionic total conductivity of the separator is formed by adding the ion conductivities of A and B and the reciprocal of the specific contact resistance of the phase boundary between A and B, and is then closed such that it is sealed. A copolymer composed of vinylidene fluoride and hexafluoropropylene is used as the binder polymer. Material A is a naturally occurring mineral.