| abstract |
The present invention provides a cathode having a complex between the surface of a cathode active material and an aliphatic nitrile compound, as Well as an electrochemical device comprising the cathode. Also, the comprising : (1) a cathode having a complex between the surface of cathode active material and an aliphatic nitrile compound ; (2) an anode having a passivation layer formed by a compound selected from the group consisting of vinylene carbonate, its derivative and an ether compound ; and (3) an electrolyte solution containing a lithium salt and a solvent. |