Lithium Ion Capacitor

摘要

This lithium ion capacitor results from housing an electrode laminate body, which comprises a positive electrode, a negative electrode, and a separator, and a non-aqueous electrolyte, which contains a lithium-ion-containing electrolyte, in an external body, wherein the negative electrode has a negative electrode current collector and a negative electrode active material layer containing a negative electrode active material that can occlude and release lithium ions on one or both surfaces of the negative electrode current collector, and the following (i) to (iii) are all satisfied: (i) the negative electrode active material is a carbon composite material containing carbon black and a carbonaceous material; (ii) the negative electrode is doped with lithium ion at between 1,050 mAh/g and 2,500 mAh/g, inclusive, per unit mass of the negative electrode active material; and (iii) the thickness of the negative electrode active material layer is between 10 μm and 60 μm, inclusive, per side.

主权项

1. A lithium ion capacitor comprising: an electrode laminate body comprising a positive electrode, a negative electrode and a separator; a non-aqueous electrolyte solution including a lithium ion-containing electrolyte; and an external body,
wherein the electrode laminate body and the non-aqueous electrolyte solution are housed in the external body, wherein the negative electrode has: a negative electrode current collector; and a negative electrode active material layer that includes a negative electrode active material that can occlude and release lithium ions, on one or both sides of the negative electrode current collector, and wherein all of the following (i) to (iii) are satisfied: (i) the negative electrode active material is a composite carbon material containing carbon black and a carbonaceous material, (ii) the negative electrode is doped with lithium ion at between 1,050 mAh/g and 2,500 mAh/g, inclusive, per unit mass of the negative electrode active material, and (iii) the thickness of the negative electrode active material layer is between 10 μm and 60 μm, inclusive, per side.