| 초록 |
Herein, Fe3O4/carbon coated Si ternary hybrid composites were fabricated. Carbon layer is directly formed on the surface of Si by thermal vapor deposition. Carbon coating layer not only prevent to contact between Si and reactive electrolyte but also provide anchoring sites for deposition of Fe3O4. Fe3O4 nanoparticles are deposited on the surface of carbon coated Si by hydrazine reducing method. The morphology and structure of Fe3O4 and carbon layer are characterized via XRD, FE-TEM, FE-SEM, XPS, and TGA. The characterizations indicate that carbon layer is fully coated on the Si particles and Fe3O4 particles are homogeneously deposited on the carbon coated Si particles. The Fe3O4/carbon coated Si electrode exhibits enhanced electrochemical performance, attributed to high conductivity and stability of carbon layer and pseudo-capacitive reaction of Fe3O4. The proposed ternary-hybrid composites are expected to lay the foundation for the fabrication of high-performance electrodes. |
