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Scalable Synthesis of SnS2/S-Doped Graphene Composites for Superior Li/Na-Ion Batteries

Abstract

Tin disulfide (SnS2) has emerged as a promising anode material for lithium/sodium ion batteries (LIBs/SIBs) due to its unique layered structure, outstanding electrochemical properties and low cost. However, its poor cycling life and time-consuming synthesis as well as low-yield production hinder the practical utilization of nanostructured SnS2. In this work, we demonstrate a simple and reliable dissolution-regeneration strategy to construct a flexible SnS2/sulfur-doped reduced graphene oxide (S-rGO) composite as anodes for LIBs and SIBs, highlighting its mass-production feature. In addition, the robust affinity between SnS2 and S-rGO without interstitial volume is much beneficial for preventing the SnS2 particles from breaking themselves away from the rGO nanosheets into free nanoparticles. As a result, the SnS2/S-rGO composite as anodes delivers high reversible capacities of 1078 mAh g-1 and 564 mAh g-1 (at 0.1 A g-1) for LIB and SIB, respectively, and excellent rate capabilities and cycling stability (e.g. 532 mAh g-1 during the 600 cycles at 5.0 A g-1 for LIBs). Our proposed strategy may also possess great potential for the practical application of other electrochemically active metal sulfide composite for the energy devices.

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Publication details

The article was received on 15 Aug 2017, accepted on 05 Sep 2017 and first published on 05 Sep 2017


Article type: Paper
DOI: 10.1039/C7NR06044K
Citation: Nanoscale, 2017, Accepted Manuscript
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    Scalable Synthesis of SnS2/S-Doped Graphene Composites for Superior Li/Na-Ion Batteries

    P. Zheng, Z. Dai, Y. Zhang, K. N. Dinh, Y. Zheng, H. Fan, J. Yang, R. Dangol, B. Li, Y. Zong, Q. Yan and X. Liu, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR06044K

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