▎ 摘　　要

NOVELTY - The method involves preparing a precursor mixture including electrochemically active particles, electrically conductive carbon particles, and a polymer binder dissolved in a nonpolar organic solvent. The electrochemically active particles include particles of a lithium-silicon (Li-Si) alloy and silicon or graphite particles. The precursor mixture is deposited on a surface of a metal substrate to form a precursor layer. A portion of the nonpolar organic solvent is removed from the precursor layer to form a negative electrode layer on the surface of the substrate. USE - Method of manufacturing negative electrode for electrochemical cell of lithium secondary battery. ADVANTAGE - The amount of active lithium present in a lithium secondary battery after the initial assembly is decreased during the first charging of the battery and during repeated cycles of the battery. The porosity of the negative electrode layer is reduced by subjecting the negative electrode layer to a calendering process. The pyrolyzed electrically conductive carbon matrix produces a more robust and comprehensive electrically conductive network between the Li-Si alloy particles and the metal current collectors on which the negative electrode layers are formed than negative electrode layers containing a non-pyrolyzed polymer binder matrix. The pyrolyzed electrically conductive carbon matrix improves the electrochemical performance of the negative electrode layers by increasing the number of Li-Si alloy particles within the layers that can participate in the electrochemical redox reactions of the electrochemical cell, which improves the capacity maintenance. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the electrochemical cell. 10Electrochemical cell 12Positive electrode 14Negative electrode 16Porous separator 18Ionically conductive electrolyte