| 초록 |
The lithium-ion battery separator is a micro-porous membrane placed between a cathode and a anode, and its main functions are to physically isolate two electrodes and so that no electrons can flow in between in a point view of the safety of the battery. Specially, the internal short-circuits caused by protrusions on the electrode surface either by unavoidable metallic impurities or by the growth of lithium dendrites during battery operation has been the most fatal to battery safety. Furthermore it is well known that thermal shrinkage of the separator or its mechanical rupture can lead to an abnormal heating, which may cause fire or explosion eventually. In this study we have developed a novel separator based on polymer/inorganic nanocomposite technology that can significantly improve battery safety. We also modified and controlled the nano-porous structure of it for enhanced charge-discharge behavior and long-term reliability of the lithium-ion batteries. |
