Abstract
AbstractOne dimensional Fe7S8@N−C nanocomposite, consisting of Fe7S8 nanoparticles homogeneously embedded in N‐doped carbon nanowires, was synthesized by a facile hydrothermal‐annealing process. As an anode material for sodium‐ion batteries, the electrode exhibited capacities of 481 mA h g−1 after 1000 cycles at 5 A g−1 and 591 mA h g−1 at 200 mA g−1 with a retention ratio of 91 %. The excellent rate performance and cycling stability can be attributed to the synergistic effects of the one‐dimensional N‐doped carbon and ultra‐small Fe7S8 particles, which will improve electrical conductivity and alleviate the volume expansion of the electrode during cycling. This work will afford a great reference for further development of iron sulfides‐based anode materials towards high‐performance sodium‐ion batteries.
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