Secondary battery porous electrode
An electrode having excellent charge/discharge cycle characteristics and which is capable of improving a secondary battery capacity. An electrode is formed on the surface of a collector as an assembly of multiple porous domain structures that are apart from each other, the porous domain structures each having a polygonal shape without an acute angle in a planar view, the polygonal shape having a maximum diameter of 120 μm or less.
1. An electrode formed on the surface of a collector as an assembly of a plurality of porous domain structures which are spaced apart from each other,
wherein each of the porous domain structures each have has a polygonal shape without an acute angle in a planar view, the polygonal shape having a maximum diameter of 120 μm or less, and
each of the porous domain structures each have has a plurality of holes formed therethrough.
2. The electrode according to claim 1 , wherein a shape of the domain structure is a rectangle, a square or a regular hexagon in a planar view.
3. The electrode according to claim 1 , wherein the domain structures are arranged such that a spacing width between each domain structure is constant.
4. The electrode according to claim 1 , wherein said electrode is used in a secondary battery.
5. The electrode according to claim 4 , wherein the secondary battery is a lithium-ion secondary battery.
6. A lithium-ion secondary battery which is formed by using the electrode according to claim 5 .