Abstract : A vacancy defective perovskite Na0.85 Ni0.45 Co0.55 F3.56 nanocrystal anode material constructs advanced lithium-ion storage devices with surface conversion and insertion hybrid mechanisms. Abstract : A vacancy defective perovskite Na0.85 Ni0.45 Co0.55 F3.56 nanocrystal (NNCF) has been introduced as an advanced anode for Li-ion capacitors (LICs), Li-ion batteries (LIBs) and Li-dual-ion batteries (Li-DIBs), exhibiting the surface conversion and insertion hybrid mechanisms for Li-ion storage.