| 摘要 |
An object of the present invention is to provide a negative electrode for a lithium ion secondary battery, capable of obtaining a lithium ion secondary battery which is excellent in initial charge characteristics and is also excellent in charge/discharge cycle characteristics, and a method for producing the same, as well as a lithium ion secondary battery comprising the negative electrode for a lithium ion secondary battery. A negative electrode for a lithium ion secondary battery according to the present invention comprises a current collector layer, and a negative electrode active material layer composed of a tin structure, the tin structure includes a plurality of protrusions which protrude approximately perpendicularly to a main surface of the current collector layer, and a cross-sectional area of the tip portion parallel to the main surface of the current collector layer of the protrusion is smaller than that of the base end portion. |
