NEGATIVE ELECTRODE ACTIVE MATERIAL LAYER WITH CONTROLLED REFLECTANCE AND LITHIUM ION SECONDARY BATTERY

A negative electrode includes a current collector and a negative electrode active material layer that is provided on the current collector and includes a negative electrode active material. The negative electrode active material includes a carbon material, and a surface of the negative electrode active material layer has a spectral reflectance Ra in a range of 7.0≤Ra≤10.8% at a wavelength of 550 nm.