Positive electrode composite material and preparation method and application thereof

The invention provides a positive electrode composite material and a preparation method and application thereof. The positive electrode composite material comprises first positive electrode particles and second positive electrode particles, and the first positive electrode particles are LiMxFe1-xPO4, 0lt; x is smaller than or equal to 0.2, and M is selected from transition elements; the content of the M element is in a decreasing trend from the inside to the surface of the first positive electrode particle; the second positive electrode particle is LiFe (P1-yAy) O4, 0lt; y is less than or equal to 0.05, and the element A comprises S and/or N. The positive electrode composite material has relatively good rate capability and low-temperature performance. 本申请提供了正极复合材料及其制备方法、应用。该正极复合材料包括第一正极颗粒及第二正极颗粒，所述第一正极颗粒为LiMxFe1-xPO4，0