Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
October 27, 2009
Patent Application Number
10740671
Date Filed
December 22, 2003
Patent Primary Examiner
Patent abstract
This invention provides a lithium ion secondary battery comprising a cathode, an anode and an nonaqueous electrolytic solution in which an electrolyte is dissolved in a nonaqueous solvent, wherein the anode comprises a non-graphitizable carbon as an anode activator; and the nonaqueous electrolytic solution comprises at least one anode protecting component selected from the group consisting of sultones having a 5- to 7-membered cyclic sulfonate structure and their substituted derivatives as well as vinylene carbonates and their substituted derivatives.
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