Synthesis, characterization and application of carbon nanocages as anode materials for high-performance lithium-ion batteries

摘要: Carbon nanocages (CNCs) with diameters of about 200∼500 nm have been synthesized by a simple method. The electrochemical properties the CNCs as anode materials were evaluated discharge/charge measurement and impedance spectroscopy. Results showed that displayed excellent cycling performance good rate capability no noticeable capacity fading up to 50 cycles at current densities 100, 300 500 mA g−1. Their significantly improved after annealing treatment 600 °C. For example, CNCs(2)-annealed exhibited much better high reversible 520 mAh g−1 density 100 A discharge 380 can be obtained results Raman, thermal gravimetric analysis indicated graphitization degree, electronic conductivity charge-transfer treatment.