Abstract
NiCo2S4 and NiCo2S4/carbon nanotube (CNT) nanocomposites were synthesized via a one-step hydrothermal approach. As anode materials for lithium-ion batteries (LIBs), the NiCo2S4/CNT nanocomposite delivers significantly improved cycling stability and excellent rate performance, compared with the pure NiCo2S4. It retains a discharge capacity of 1405.7 mAh g−1 after 80 cycles at 200 mA g−1 with only 9.2% capacity degradation. Moreover, a discharge capacity of 711.6 mAh g−1 after 390 cycles can still be maintained even at a high current density of 1 A g−1. The results demonstrate that the NiCo2S4/CNT nanocomposite holds great potential for applications in LIBs.
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