Electrode for use in a nonaqueous electrolyte secondary cell, method for producing same, and nonaqueous electrolyte secondary cell
AssigneeNEC Energy Devices, Ltd.
InventorTomoyuki OHTA
Life of this patent
Estimating the term…
Abstract
An electrode (1) for use in a nonaqueous electrolyte secondary cell includes: a current-collecting foil (10); an electrode mixture layer (2) that is formed on a portion of the current-collecting foil (10); and an oxide film (6) provided on the current-collecting foil (10) in at least a region that extends from the boundary (5) between a forming section (3) and a non-forming section (4) of the electrode mixture layer (2) and over a portion of the non-forming section (4).
Claims6
An electrode for use in a nonaqueous electrolyte secondary cell comprising:
- a current-collecting foil;
- an electrode mixture layer that is formed on a portion of said current-collecting foil;
- and
- an oxide film that is provided in a region that extends at least from a boundary between a forming section and non-forming section of said electrode mixture layer and over a portion of said non-forming section on said current-collecting foil.
A method of fabricating an electrode for use in a nonaqueous electrolyte secondary cell comprising:
- a first step of applying, on a current-collecting foil that has greater length in a first direction than length in a second direction that is orthogonal to said first direction, an electrode mixture layer in a form of stripes that are parallel to said first direction and then providing an oxide film on said current-collecting foil in a region that extends at least from a boundary between a forming section and a non-forming section of said electrode mixture layer and over a portion of said non-forming section;
- a second step of, after said first step, coiling said current-collecting foil around an axis that is parallel to said second direction to form an electrode roll, and
- a third step of cutting off the electrode to a desired size from said electrode roll.
Dependencies are inferred from the claim text.