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:
Oct. 12, 2010
Filed:
Jul. 04, 2003
Volker Hennige, Duelmen, DE;
Christian Hying, Rhede, DE;
Gerhard Hoerpel, Nottuln, DE;
Sven Augustin, Dorsten, DE;
Volker Hennige, Duelmen, DE;
Christian Hying, Rhede, DE;
Gerhard Hoerpel, Nottuln, DE;
Sven Augustin, Dorsten, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
The separator-electrode units comprise a porous electrode which is useful as a positive electrode (cathode) or negative electrode (anode) in a lithium battery and a separator layer applied to this electrode and are characterized in that the separator-electrode units comprise a purely inorganic separator layer which comprises at least two fractions of metal oxide particles which differ from each other in their average particle size and/or in the metal. More particularly, the separator layer comprises metal oxide particles having an average particle size (D) which is greater than the average pore size (d) of the pores of the porous positive electrode that are bonded together by metal oxide particles having a particle size (D) which is smaller than the pores of the porous electrode.