Separator and method of manufacturing non-aqueous electrolyte secondary battery using the same
OwnerKaoru Inoue, Masato Fujikawa +1inventors
InventorsKaoru Inoue, Masato Fujikawa, Takayuki Shirane
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Abstract
A separator includes a porous sheet, a heat-resistant porous layer, and a metal lithium layer. The heat-resistant porous layer is provided on one of surfaces of the porous sheet. The metal lithium layer is provided on the surface of the heat-resistant porous layer. The separator is disposed between a negative electrode that includes an active material capable of reversibly storing and emitting lithium ions and having a theoretical capacity density of 400 mAh/g or higher, and a positive electrode capable of reversibly storing and emitting lithium ions, so that the metal lithium layer faces the negative electrode.
Claims5
A separator comprising:
- a porous sheet;
- a first heat-resistant porous layer provided on one of surfaces of the porous sheet;
- and
- a metal lithium layer provided on a surface of the first heat-resistant porous layer.
A method of manufacturing a non-aqueous electrolyte secondary battery comprising:
- disposing a separator between a negative electrode and a positive electrode to fabricate an electrode group, the negative electrode including an active material capable of reversibly storing and emitting lithium ions and having a theoretical capacity density of at least 400 mAh/g, the positive electrode being capable of reversibly storing and emitting lithium ions, and the separator including a porous sheet, a first heat-resistant porous layer provided on one of surfaces of the porous sheet, and a metal lithium layer provided on a surface of the first heat-resistant porous layer, the separator being disposed so that the metal lithium layer faces the negative electrode;
- and
- disposing a non-aqueous electrolyte between the separator and the negative electrode to allow the active material of the negative electrode to store lithium ions from the metal lithium layer.
Dependencies are inferred from the claim text.