Current collector and battery

Abstract

A current collector is provided that allows for a battery in which resistance does not increase easily even when charging and discharging occurs, and which has excellent structural efficiency. [Solution] The current collector of this disclosure comprises a substrate containing the element Al, and a protective layer formed on the side of the substrate that is in contact with the electrode active material layer. The strength of the substrate is 200 MPa or more.

Claims

1. A substrate containing the element Al, A protective layer formed on the side of the substrate that is in contact with the electrode active material layer, Equipped with, A current collector wherein the tensile strength of the substrate at the time of cutting is 200 MPa or more.

2. The current collector according to claim 1, wherein the protective layer contains Ni element.

3. The current collector according to claim 2, wherein the thickness of the protective layer is 2.0 μm or less.

4. The current collector described in claim 1, the negative electrode active material layer, the electrolyte layer, the positive electrode active material layer, and the positive electrode current collector are all provided in this order. The electrode active material layer is the negative electrode active material layer, A battery in which the reaction potential (vs. Li+ / Li) of the negative electrode active material contained in the negative electrode active material layer is 0.3V or less.

5. The battery according to claim 4, wherein the electrolyte layer includes a solid electrolyte.

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