| 초록 |
There has been considerable interest in LiFePO4 as an alternative cathode material in Li-ion cells due to cost, safety and stability concerns. The drawbacks are the low capacities achievable at even moderate discharge rates, associated with the limited electronic and ionic conductivities and slow interface phase movement. Much can be learned regarding the performance of low conductivity materials when they are in thin film form. Thin films comprise a simpler system without complications from carbon and binder necessary in porous electrodes. This talk will describe preparation of LiFePO4 thin films with a pulsed laser deposition, and electrochemical characterization as functions of carbon content and film thickness. |
