Journal
BATTERIES & SUPERCAPS
Volume 5, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/batt.202100203
Keywords
anode materials; Fe7S8@N-C; sodium-ion batteries
Funding
- Shanxi Province Science Foundation for Youths [201901D211257]
- Australian Research Council [DE200101384, DP160102627, LP160100273]
- Australian Research Council [LP160100273, DE200101384] Funding Source: Australian Research Council
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A one-dimensional Fe7S8@N-C nanocomposite was synthesized and showed excellent rate performance and cycling stability as an anode material for sodium-ion batteries, attributed to the synergistic effects of one-dimensional N-doped carbon and ultra-small Fe7S8 particles.
One 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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