Electrical energy storage device and method of manufacturing the same
AssigneePrime Planet Energy & Solutions, Inc.
InventorShuhei TAKESHITA
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Abstract
A battery according to one embodiment of the electrical energy storage device disclosed herein comprises a negative electrode including a negative electrode current collector, a protective region, and a negative electrode active material layer. The negative electrode current collector includes copper. The protective region is disposed on the negative electrode current collector and includes a sulfonate ion. The negative electrode active material layer is disposed on the protective region.
Claims8
An electrical energy storage device comprising a negative electrode, the negative electrode including:
- a negative electrode current collector including copper,
- a protective region including a sulfonate ion and disposed on the negative electrode current collector, and
- a negative electrode active material layer disposed on the protective region.
A method of manufacturing an electrical energy storage device, the method comprising:
- a preparation step of preparing an electrical energy storage device assembly comprising a negative electrode, the negative electrode including:
- a negative electrode current collector including copper,
- a film including a cyclic sulfonate ester and disposed on the negative electrode current collector, and
- a negative electrode active material layer disposed on the film, and
- a charging step of charging the electrical energy storage device assembly.
Dependencies are inferred from the claim text.