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:
May. 01, 2018
Filed:
Aug. 20, 2014
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention is directed to a lithium secondary battery comprising an anode comprising an anode active material, a cathode comprising a cathode active material, and a polymer membrane, wherein the polymer membrane is disposed between the cathode and the anode, wherein the anode active material comprises a mixture of at least two kinds of lithium metal oxide particles having different mass median particle diameters D50, wherein the lithium metal oxide particles are secondary particles comprising primary particles, the mixture comprises first lithium metal oxide particles having a mass median particle diameter D50 of 1 nm to less than 3 μm, second lithium metal oxide particles having a mass median particle diameter D50 of 3 μm to 30 μm, and a mix ratio of the first lithium metal oxide particles to the second lithium metal oxide particles is 70:30 to 30:70.