ANODE MATERIAL, ANODE SHEET AND SECONDARY BATTERY

An anode material includes a core and a coating layer. The coating layer is located on a surface of the core, the core includes natural graphite and first amorphous carbon filled in pores of the natural graphite, and the coating layer includes second amorphous carbon. A Raman spectrum of the anode material has a D peak and a G peak, and an intensity ratio of the D peak to the G peak is I/I. The core includes an inner layer region and an outer layer region outside the inner layer region, and the outer layer region is closely adjacent to the coating layer. An average value of I/Iin the inner layer region is K, and an average ratio of I/Ivalues of the inner layer region to the outer layer region is K, which satisfy: 0.4≤K≤0.7, and 0.5≤K