NEGATIVE ELECTRODE ACTIVE MATERIAL AND ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE USING SAME

This application relates to a negative electrode active material and an electrochemical device and an electronic device using the same. Specifically, this application provides a negative electrode active material, where the negative electrode active material has a median particle size D1v50, the negative electrode active material has a median particle size D2v50 under a pressure of 1 t, and D2v50/D1v50 is not less than 0.8. The negative electrode active material of this application helps to achieve a balance between high capacity and high cycle expansion performance of an electrochemical device.