Secondary battery having non-aqueous electrolyte

Details Secondary battery having non-aqueous electrolyte Secondary battery having non-aqueous electrolyte

H - Electricity

01

M

H01M 10/36 (2006.01) H01M 4/58 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2122092

A secondary battery having a non-aqueous electrolyte according to the present invention includes a negative electrode using a carbonaceous material capable of dope and undope of lithium ions as an anode material, a positive electrode using a composite oxide of lithium and a transition metal as a cathode material, and a non-aqueous electrolyte formed by dissolving an electrolyte into a non-aqueous solvent, the non-aqueous solvent containing methylethyl carbonate and dimethyl carbonate. According to the present invention, a secondary battery having a non-aqueous electrolyte in which normal charge/discharge reactions can be maintained even in battery overcharge or after high-temperature storage of a charged battery, and which exhibits a higher energy density, a longer cycle life, higher safety performance and excellent environment-resistance, can be produced.

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