Electrochemical device

Abstract

An electrochemical device includes: an electrode body including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and an electrolyte containing a lithium salt. The negative electrode includes a negative current collector and a negative electrode mixture layer supported on the negative current collector. The negative electrode mixture layer contains a negative electrode active material that is reversibly doped with lithium ions, and the negative current collector has substantially no through-hole. A specific surface area of the negative electrode mixture layer is in a range from 30 m2/g to 60 m2/g, inclusive, and in a discharged state, a potential of the negative electrode is less than or equal to 0.2 V with respect to a Li counter electrode.

Dependencies are inferred from the claim text.