| 초록 |
The ulternative anode materials for Li-ion batteries are under investigation to meet increasing high energy demands. Transition metal oxides with a structure defined as the spinel structure (denoted as AB2O4 (A=Ni, Zn, Cu, Mg and B=Co ), have recently attracted great interest due to their low cost, easy synthesis, high electrochemical activity and stability, and easy control of morphologies. The Co-based oxide material delivers the 3-4 times higher capacity than conventional graphite electrode (370 mAh/g). Herein, mesoporous spinel oxides directly deposited on conducting substrate by chemical route. Porous nanoarchitectures can offer a large number of electrochemically active sites and, at the same time, facilitate transport of charge carriers (electrons and ions) during energy storage reactions. Binder and carbon free spinel oxides exhibits high specific capacity and excellent rate capability with long cycle life, indicates the potential candidates as an anode material for Li-ion battery. This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF 2016R1D1A1B03930855). |
