| 摘要 |
PROBLEM TO BE SOLVED: To provide a nickel structure with a large surface area and a simple method for producing such a nickel structure.SOLUTION: The nickel structure has a plurality of radially extending projections on the surface thereof, wherein the projection comprises nickel, and has an average length of 100 nm-1 μm and an average existing density on the surface of the nickel structure of 1-15 pieces/μm, and when a cross-sectional diameter in the radial direction orthogonal to the longitudinal direction of the nickel structure is a and a length in the longitudinal direction is b, b/a is at least 10. |
