Carbonaceous material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for producing carbonaceous material for non-aqueous electrolyte secondary battery

Abstract

An object of the present invention is to provide a carbonaceous material (carbonaceous material for a non-aqueous electrolyte secondary battery) used for a negative electrode of a non-aqueous electrolyte secondary battery (e.g., a lithium ion secondary battery) exhibiting favorable charge/discharge capacities and low resistance and having favorable resistance to oxidative degradation. The present invention relates to a carbonaceous material for a non-aqueous electrolyte secondary battery, having an average interplanar spacing d002 of the (002) plane within a range of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area within a range of 20 to 65 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.3 mass % or less, an oxygen element content of 2.5 mass % or less, and an average particle diameter of 1 to 4 μm according to a laser scattering method.

Dependencies are inferred from the claim text.