| abstract |
The invention provides a composite electrode material and a preparation method and application thereof. The composite electrode material comprises a linear density structure basic unit, wherein the linear density structure basic unit is a porous structure and comprises a first electrode material layer containing a first electrode material, a second electrode material layer containing a second electrode material and a transition layer formed between a first electrode material film layer and a second electrode material film layer. The composite electrode material maintains the structural stability in the lithium ion intercalation/deintercalation process, and has excellent electrochemical performance. The preparation method effectively ensures the stable chemical performance of the growing composite electrode material, and endows the composite electrode material with good high-rate performance, good safety performance and high efficiency. |