▎ 摘　　要

NOVELTY - Preparing a hybrid complex comprises preparing and mixing the bulk material powder of the first nanosheet and the bulk material powder of the second nanosheet, injecting nitrogen to form a nitrogen atmosphere, mixing the first cation precursor solution into the mixture, intercalating first cations between the layers of the bulk material of the first nanosheet or the bulk material of the second nanosheet having a multilayer structure by treating the mixture with a first sonication, ion-exchanging the intercalated first cation with a second cation by incorporating a second cation precursor solution, and exfoliating and re-stacking the first and second nanosheets by subjecting the ion-exchanged mixture to a second sonic treatment. USE - The hybrid complex useful for preparing electrode active material for lithium-ion battery (all claimed). ADVANTAGE - The method improves deintercalation efficiency, conductivity, structural stability, charge/discharge capacity, and coulomb efficiency and cycle characteristics of energy storage devices. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) hybrid complex; (2) electrode active material comprising hybrid complex; and (3) lithium-ion battery comprising anode comprising electrode active material, cathode, separator interposed between the anode and the cathode, and electrolyte.