| 摘要 |
PURPOSE: A lithium secondary battery is provided to minimize the interfacial resistance between a collector and an electrode, to reduce the internal impedance of a battery, to increase the battery life, and to prevent the reduction of a battery capacity. CONSTITUTION: The lithium secondary battery comprises a collector, an adhesive layer, a composite electrode layer and a polymer electrolyte layer, wherein the adhesive layer is composed of a composition containing polyvinyl butyral, a conductive agent and a solvent, and the content of polyvinyl butyral is 3-7 wt% based on the total weight of the composition. Each of the composite electrode layer and the polymer electrolyte layer comprises a copolymer of a vinyl monomer selected from the group consisting of N-isopropylacryl amide, acryloyl morpholine and N,N-dimethylaminopropyl acrylamide with polyethyleneglycol diacrylate or polyethyleneglycol dimethacrylate, an ionic lithium salt and an organic solvent. |
