| 초록 |
As electrode materials for lithium-ion batteries, metal oxide hollow structures provide high specific capacity, superior rate capability and improved cycling performance. MnO2 is a very promising pseudo capacitive material due to its low cost, environmental benignity, and high theoretical specific capacitance, but it has a key weakness of poor conductivity. On the other hand, carbon nanofibers have high power density and long cycle life, nevertheless, the low specific capacitance greatly limits their further application. In this study, a simple hydrothermal method without using any template and surfactant has been used to fabricate the novel hollow-MnO2, which was composed of tube shape. Then the hollow-MnO2 samples were combined with carbon nanofibers. The as-prepared hydrid materials could be used as lithium ion batteries anode. This hybrid exhibited a reversible electrochemical lithium storage capacity and an excellent rate capability. It is expected that hollow-MnO2/carbon nanofibers hybrid could be a promising candidate material as a high capacity anode for lithium ion batteries. |
