Anode Material, Anode Sheet, and Secondary Battery

An anode material, comprising a core body and a carbon coating layer coating at least partial surface of the core body;

• the core body comprises a matrix and an active substance;
• the matrix has pores, and at least partial active substance is provided in the pores of the matrix, an average particle size of the active substance is 0.1 nm to 100 nm, a specific surface area of the anode material is 1 m2/g to 3 m2/g;
• the anode material is tested through infrared spectroscopic analysis, a stretching vibration peak at a wave number of 2896±10 cm−1 is a stretching vibration peak of —CH, an area of the stretching vibration peak of —CH is S1;
• a stretching vibration peaks at wave numbers of 2924±10 cm−1 and 2853±10 cm−1 are stretching vibration peaks of —CH2, a sum of areas of stretching vibration peaks of —CH2 is S2;
• a stretching vibration peak at the wave number of 2960±10 cm−1 is a stretching vibration peak of —CH3, an area of the stretching vibration peak of —CH3 is S3;
• and the S1, the S2, and the S3 meet:
• 0.1
• ≤
• 3
• ⁢
• S
• 3
• S
• 1
• +
• 2
• ⁢
• S
• 2
• +
• 3
• ⁢
• S
• 3
• ≤
• 0.5
• ;
• based on a mass of the anode material, a mass proportion of hydrogen in the anode material is less than or equal to 1%, a mass proportion of silicon in the anode material is 30% to 65%, a mass proportion of carbon in the anode material is 30% to 65%.