Interwoven heterostructural Co3O4–carbon@FeOOH hollow polyhedrons with improved electrochemical performance

摘要: Complex heterostructured nanomaterials receive tremendous attention due to their superior physical and chemical performances than single-structured materials. Nevertheless, it remains a great challenge precisely control the composition (crystalline or amorphous), size dimension of building blocks hierarchical nanostructures. Herein, we report scalable method for fabricating crystalline–Co3O4–carbon@amorphous-FeOOH interwoven hollow polyhedrons through thermal treatment paired with solution-phase growth application as anodes in new-generation lithium ion batteries. In this synthesis, well-defined Co3O4–carbon serve both oxidizing agent platform amorphous FeOOH nanowires. The obtained exhibit high reversible capacity 603 mA h g−1 after 100 cycles at specific current 200 g−1, showing fading only 0.158% per cycle between 10 cycles, much lower that pure (0.604%). When returns from 2000 50 Co3O4–carbon@FeOOH heterostructure maintains 1120 demonstrating remarkable cycleability rate capability. Such performance is attributed synergistic effect integrated crystal components well unique heterostructure. design such an 3D frame architecture provides new opportunity obtaining high-performance electrode materials field energy storage.