Nonaqueous electrolyte for improving performance and lithium secondary battery comprising the same

Disclosed is a lithium secondary battery comprising a cathode, an anode, an electrolyte and a separator, wherein the anode comprises an anode active material having a specific surface area of 3m2/g or less, and the electrolyte comprises 0.1~6 parts by weight of a propane sultone-based compound based...

Full description

Saved in:
Bibliographic Details
Main Authors CHOI, YONG-SU, AHN, JEONG AE, YOON, SOO-JIN, LEE, HOUN, PARK, HONG-KYU, JUNG, HYUN MIN, PARK, TAE-YOON
Format Patent
LanguageChinese
English
Published 01.04.2007
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online AccessGet full text

Cover

More Information
Summary:Disclosed is a lithium secondary battery comprising a cathode, an anode, an electrolyte and a separator, wherein the anode comprises an anode active material having a specific surface area of 3m2/g or less, and the electrolyte comprises 0.1~6 parts by weight of a propane sultone-based compound based on 100 parts by weight of the electrolyte. The lithium secondary battery solves the problem of performance degradation caused by the use of an increased amount of a propane sultone-based compound required to form a SEI film on the surface of an anode upon the first charge cycle. Also, the lithium secondary battery can provide improved cycle characteristics and high-temperature storage characteristics.
Bibliography:Application Number: TW20060134009