一种锂二次电池复合电极材料与锂二次电池，其中的锂二次电池复合电极材料至少包括：电极活物粉体以及披覆于电极活物粉体的表面的奈米披覆层。其中奈米披覆层是由介稳态聚合物、化合物A、化合物B或其组合形成的，所述化合物A为具有反应型末端官能基的高分子单体，所述化合物B为杂环胺基芳香衍生物之起始剂，且奈米披覆层对所述锂二次电池复合电极材料的重量比例为0.005%~10%。

A composite electrode material of lithium secondary battery and a lithium secondary battery are provided. The composite electrode material of lithium secondary battery at least comprises a electrode active powder and a nanoscale coating layer coated over the surface of the electrode active powder, wherein the nanoscale coating layer is composed of a metastable state polymer, a compound A, a compound B, or combination thereof. The compound A is a polymer having a reactive terminal functional group, and the compound B is a heterocyclic amino aromatic derivative as an initiator. The nanoscale coating layer has a weight ratio of 0.005%-10% to the composite electrode material of lithium secondary battery.