| 초록 |
Nowadays, many metal oxide based materials proposed for advanced Li-ion battery to overcome limited capacity and rate performance of current commercialized Li-ion batteries. In this work, new polygonal-stacked Cu2O (P-Cu2O) with different morphologies has been synthesized via modified Benedict’s reaction for advanced anode material in Li-ion batteries. The morphology of P-Cu2O is successfully controlled with modifying the concentration of hexadecyltrimethylammonium bromide (CTAB) surfactant. Discharge capacity of the P-Cu2O with sharp tip (P-Cu2O-ST) is approximately 255 mAh g−1 at 0.2 C rate, along with a superior rate capacity of approximately 156 mAh g−1 even at 5 C rate in comparison those of the P-Cu2O with round edge (P-Cu2O-RE) and P-Cu2O with strait edge (P-Cu2O-SE). The different electrochemical rate performances might be attributed to their unique morphologies and large surface area. We believe that the results of this research can confirm that morphology effect on electrochemical performance of anode materials for lithium-ion batteries. |
