NOVELTY - A lithium secondary battery has an electrode component (3) containing anode (6), cathode (7), separator (8) positioned between anode and cathode, and nonaqueous electrolyte. The cathode is obtained by forming cathode active material layer containing cathode material particles containing silicon, silicon-based alloys and/or binder containing siloxane-containing polyimide resin (I), on a cathode collector.    USE - Lithium secondary battery. Uses include but are not limited to mobile phones, notebook-type personal computers, electric tools, personal digital assistants, and hybrid electric vehicles.    ADVANTAGE - The lithium secondary battery has high energy density, excellent charging and discharging characteristics and electroconductivity. The cathode active material layer does not peel easily from the cathode collector.    DETAILED DESCRIPTION - A lithium secondary battery has an electrode component containing anode, cathode, separator positioned between anode and cathode, and nonaqueous electrolyte. The cathode is obtained by forming cathode active material layer containing cathode material particles containing silicon, silicon-based alloys and/or binder containing siloxane-containing polyimide resin of formula (I), on a cathode collector.    R=functional group of formula (II) or (III);    R2-R5=1-8C optionally substituted monovalent hydrocarbyl;    R1,R6=1-8C optionally substituted bivalent hydrocarbyl;and    a=1-4.    INDEPENDENT CLAIMS are included for the following:    (1) manufacture of lithium secondary battery. The electrode component is obtained by arranging a separator between anode and cathode and then impregnating nonaqueous electrolyte solution into the electrode component. Cathode material particles are dispersed in solution containing at least one binder precursors of formula (V-1), (V-2), (V-3), (VI) and (VII), to obtain negative mix slurry. The prepared negative mix slurry is coated on a cathode collector and heat-processed in non-oxidizing atmosphere, to obtain cathode; and    (2) binder precursor solution.    R7=monovalent organic group.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic perspective view of electrode component.    Anode current collection tab (1)    Cathode current collection tab (2)    Electrode component (3)    Anode (6)    Cathode (7)    Separator (8)