The three-dimensional (3D) SnS decorated carbon nano-networks (SnS@C) were synthesized via a facile two-step method of freeze-drying combined with post-heat treatment. The lithium and sodium storage performances of above composites acting as anode materials were investigated. As anode materials for lithium ion batteries, a high reversible capacity of 780 mAh·g for SnS@C composites can be obtained at 100 mA·g after 100 cycles. Even cycled at a high current density of 2 A·g, the reversible capacity of this composite can be maintained at 610 mAh·g after 1000 cycles. The initial charge capacity for sodium ion batteries can reach 333 mAh·g, and it retains a reversible capacity of 186 mAh·g at 100 mA·g after 100 cycles. The good lithium or sodium storage performances are likely attributed to the synergistic effects of the conductive carbon nano-networks and small SnS nanoparticles.
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| http://dx.doi.org/10.3390/nano8030135 | DOI Listing |
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