| 摘要 |
PURPOSE: A composite for forming a high molecule matrix for a lithium secondary cell is provided to include a pyrolysis foaming agent instead of a usual plasticizer, a lithium secondary cell is provided to include the high molecule matrix formed by use of the composite, and a manufacturing method of the lithium secondary cell is provided to have simple processes and environmental friendliness. CONSTITUTION: A composite for forming a high molecule matrix includes a high molecule resin, an inorganic salt, a foaming agent and a solvent. The foaming agent is a pyrolysis foaming agent and has a content of 1 to 80 wt% to the total weight of the composite. A lithium secondary cell includes an electrode assembly in which electrode plates and high molecule matrix are alternately laminated. The high molecule matrix has a high molecule resin and uniform void distribution. A manufacturing method of a lithium secondary cell includes the steps of making an electrode activating substance composite; making an electrode plate by casting the electrode activating substance composite on a current-collecting body and drying it; making the composite for forming the high molecule matrix; making the high molecule matrix by casting the composite for forming the high molecule matrix on a supporting body and drying it; making the electrode assembly by laminating the electrode plate and the high molecule matrix and heat-treating it; and injecting an electrolyte into the electrode assembly. |
