SnS particles anchored on Ti3C2 nanosheets as high-performance anodes for lithium-ion batteries

•SnS particles anchored on the surface of Ti3C2 nanosheets.•Ti3C2 can effectively inhibit the volume expansion of SnS particles.•The obtained anode exhibits excellent cycle performance and structure stability. Tin sulfide (SnS) has been regarded as one of the most attractive anode materials for lith...

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Veröffentlicht in:Journal of alloys and compounds 2022-02, Vol.893, p.162089, Article 162089
Hauptverfasser: Wang, Ran-cheng, Pan, Qing-lin, Luo, Yu-hong, Yan, Cheng, He, Zhen-jiang, Mao, Jing, Dai, Kehua, Wu, Xian-wen, Zheng, Jun-chao
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Sprache:eng
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Zusammenfassung:•SnS particles anchored on the surface of Ti3C2 nanosheets.•Ti3C2 can effectively inhibit the volume expansion of SnS particles.•The obtained anode exhibits excellent cycle performance and structure stability. Tin sulfide (SnS) has been regarded as one of the most attractive anode materials for lithium-ion batteries (LIBs) because of its high specific capacity. However, its large volume expansion (>300%) and low electronic conductivity restrict its application. In this study, Sn2+ was anchored on Ti3C2 nanosheets through electrostatic attraction, and Ti3C2@SnS@C was synthesized through a hydrothermal method. The obtained Ti3C2@SnS@C exhibits excellent rate performance and cycle performance and effectively serves as an anode material for LIBs. It has a stable capacity of 563.5 mAh/g after 420 cycles at 500 mA/g, and this value is much higher than that of commercially available anode materials. Ti3C2 can also effectively inhibit the volume expansion of SnS particles. The volume expansion of Ti3C2@SnS@C electrode is only 56.8% after 420 cycles at 500 mA/g. This finding is much better than that of pure SnS@C electrode (209.3%).
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2021.162089