BATTERY HAVING ELECTRODE OF CONTROLLED POROSITY IN MESH SHAPE

摘要

PROBLEM TO BE SOLVED: To increase output density and energy density in a battery.

SOLUTION: A battery or an energy device contains a first electrode having a first surface and a base part for positioning a counter-electrode having the base part and a second mesh-like surface in the vicinity. The first surface, in a mesh state, zones a plurality of protuberances 28 and intercalating recesses and is given a surface area at least 1.5 times a theoretical surface area of the flat and non-mesh-like surface. The protuberance 28 has a length l and a cross-section area thickness a, the latter a changing along the length l of the protuberances 28 to be less than 100 microns in an average along the length, and the first and the second mesh-like surfaces interpenetrating each other.

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