ALKALI METAL ION CAPACITOR

摘要

An alkali metal ion capacitor includes a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and an electrolyte containing alkali metal ions and anions, wherein the separator has a thickness of 10 µm or less, the positive electrode includes a positive electrode current collector having a three-dimensional mesh-like metal skeleton and a positive electrode active material held on the positive electrode current collector, the negative electrode includes a negative electrode current collector having a three-dimensional mesh-like metal skeleton and a negative electrode active material held on the negative electrode current collector, the positive electrode has a maximum surface roughness Rz1 of 35 µm or less and the negative electrode has a maximum surface roughness Rz2 of 35 µm or less.