Anode material for lithium ion secondary battery, method of producing anode material for lithium ion secondary battery, anode for lithium ion secondary battery, and lithium ion secondary battery

Abstract

Provided is an anode material for a lithium ion secondary battery, which the anode material satisfies at least one of the following (1) or (2). (1) The anode material includes: a first carbon material as a core; and a second carbon material present on at least a part of a surface of the first carbon material, and having a crystallinity lower than the crystallinity of the first carbon material; and the anode material has at least two peaks within the range of from 395 eV to 405 eV in an X-ray photoelectron spectrum thereof. (2) The anode material has an R value of from 0.1 to 1.0, and has at least two peaks within the range of from 395 eV to 405 eV in an X-ray photoelectron spectrum thereof.

Dependencies are inferred from the claim text.