Battery electrode substrate sheet
AssigneeNEC Energy Devices, Ltd.
InventorAkio Ukita
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Abstract
To provide a battery electrode substrate sheet capable of reducing a waste part, in which a defect part is included, of an electrode active material coating film coated on a collector. A battery electrode substrate sheet includes a strip-shaped collector 101, an electrode active material coating film 103 formed on the collector in a longitudinal direction thereof, and an insulating protective film 107 formed on an electrode active material non-coating surface of the collector so as to extend along the coating film in the longitudinal direction thereof. A defect sign part 105 that indicates a portion at which a defective part 104a of the coating film exists is formed on the insulating protective film 107.
Claims11
A battery electrode substrate sheet characterized by comprising:
- a strip-shaped collector;
- an electrode active material coating film formed on the collector in a longitudinal direction thereof;
- and
- an insulating protective film formed on an electrode active material non-coating surface of the collector so as to extend along the coating film in the longitudinal direction thereof, wherein
- a defect sign part that indicates a portion at which a defective part of the coating film exists is formed on the insulating protective film.
Dependencies are inferred from the claim text.