Degreasing method for aluminium hard foil, aluminium hard foil, aluminium hard foil electrode member, and lithium ion secondary battery using said member
AssigneeShowa Denko K.K.
InventorKatsuhisa Hirayama
Life of this patent
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Abstract
An aluminum hard foil is degreased without reducing the hardness to improve the coating performance of coating material. A foil-rolled aluminum foil is subjected to a low-temperature heat treatment for holding the aluminum foil at 80 to 160° C. for 1 hour or more. The low-temperature heat treatment is preferably performed by subjecting the aluminum foil to batch processing with the aluminum foil coiled.
Claims13
A method for degreasing an aluminum hard foil, the method comprising the step of:
- subjecting a foil-rolled aluminum foil to a low-temperature treatment for holding the aluminum foil at 80 to 160° C. for 1 hour or more to degrease the aluminum foil.
An aluminum hard foil obtained by subjecting a foil-rolled aluminum foil to a low-temperature treatment for holding the aluminum foil at 80 to 160° C. for 1 hour or more to degrease the aluminum foil.
An aluminum hard foil electrode member, comprising:
- an electrode substrate consisting of an aluminum hard foil obtained by subjecting a foil-rolled aluminum foil to low-temperature heat treatment for holding the aluminum foil at 80 to 160° C. for 1 hour or more to degrease the aluminum foil;
- and electrode material containing electrode active material applied on the electrode substrate.
A lithium ion secondary battery, comprising an electrode substrate, wherein the electrode substrate consists of an aluminum hard foil obtained by subjecting a foil-rolled aluminum foil to a low-temperature heat treatment for holding the aluminum foil at 80 to 160° C. for 1 hour or more to degrease the aluminum foil.
A lithium ion secondary battery, comprising an aluminum hard foil electrode material as an electrode member,
- wherein the aluminum hard foil electrode member includes an electrode substrate consisting of an aluminum hard foil obtained by subjecting a foil-rolled aluminum foil to a low-temperature heat treatment for holding the aluminum foil at 80 to 160° C. for 1 hour or more to degrease the aluminum foil, and electrode material containing electrode active material applied on the electrode substrate.
Dependencies are inferred from the claim text.