Patent ID: 11870072
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A secondary battery comprising:
a positive electrode including a halide, the halide including at least one metal element selected from the group consisting of copper, iron, nickel, cobalt, tin, and zinc, as a positive electrode active material;
a negative electrode including at least one selected from the group consisting of lithium metal, a lithium alloy, and a compound capable of having Li inserted and extracted, as a negative electrode active material;
a first nonaqueous electrolyte formed of an ionic liquid including chlorine ions comprising a non-chloroaluminate-based ionic liquid and the first nonaqueous electrolyte being in contact with the positive electrode;
a second nonaqueous electrolyte including lithium ions that is different from the ionic liquid including chlorine ions, and is in contact with the negative electrode; and
a separator having lithium ion conductivity and being interposed between the positive electrode and the negative electrode, and
wherein the separator having lithium ion conductivity allows only lithium ions to permeate.