POROUS METAL FILM, ELECTRODE, CURRENT COLLECTOR, ELECTROCHEMICAL SENSOR, POWER STORAGE DEVICE AND SLIDING MEMBER AS WELL AS METHOD FOR PRODUCING POROUS METAL FILM

摘要

PROBLEM TO BE SOLVED: To provide a porous metal film having a large specific surface area.

SOLUTION: The porous metal film 10 is a porous metal film formed on a substrate 20. The porous metal film 10 has a plurality of columnar portions 11. The plurality of columnar portions 11 extend from a substrate 20. At least one of the plurality of columnar portions 11 has diameter-enlarging portions 11a to 11c whose diameters are each enlarged from the base end to the front end.

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