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. 29, 2011
Filed:
Aug. 23, 2007
Ki-tae Kim, Daejeon, KR;
Min-gyu Kim, Gyeongsangbuk-do, KR;
Jae-phil Cho, Gyeonggi-do, KR;
Soon-ho Ahn, Daejeon, KR;
Seo-jae Lee, Daejeon, KR;
Ki-Tae Kim, Daejeon, KR;
Min-Gyu Kim, Gyeongsangbuk-do, KR;
Jae-Phil Cho, Gyeonggi-do, KR;
Soon-Ho Ahn, Daejeon, KR;
Seo-Jae Lee, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
Disclosed are an electrode active material, having a composition of SnPx (0.9≦x≦0.98), an electrode comprising the same, and a lithium secondary battery comprising the electrode. Also disclosed is a method for preparing an electrode active material having a composition of SnPx (0.9≦x≦0.98), the method comprising the steps of: preparing a mixed solution of a Sn precursor, trioctyl phosphine (TOP) and trioctyl phosphine oxide (TOPO); and heating the solution. The application of the teardrop-shaped single-crystal SnP0-94 particles as an anode active material for lithium secondary batteries can provide an anode having very excellent cycling properties because the active material has a reversible capacity, which is about two times as large as that of a carbon anode, along with a very low irreversible capacity, and it is structurally very stable against Li ion intercalation/deintercalation in a charge/discharge process, indicating little or no change in the volume thereof.