| 초록 |
Metal phosphides have been considered as electrode materials for lithium-ion batteries (LIBs) due to their theoretical capacities and the abundant resources. NiP2 material with high P content is attractive for anode materials because it can offer high reversible capacities and low potential versus Li/Li+. However, P-rich metal phosphides have usually been limited to the form of aggregated powder obtained from high energy milling processes. In order to apply P-rich metal phosphide materials for a LIB anode, the development of a simple and cost-effective method to control the morphology of P-rich metal phosphides is crucially required. Herein, we report a simple two-step scalable method of systematically synthesizing nickel phosphide with high P contents and reduced graphene oxide (rGO) composite powder. The Ni/rGO composite powder prepared by a scalable aerosol process was then transformed into NiP2/rGO composite powder by a simple phosphorization process in a vacuum-sealed ampoule. The synthesized NiP2/rGO composite powders showed excellent Li+ storage properties. |
