SnS particles anchored on Ti3C2 nanosheets as high-performance anodes for lithium-ion batteries
SnS particles anchored on Ti3C2 nanosheets as high-performance anodes for lithium-ion batteries
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锚定在 Ti3C2 纳米片上的 SnS 颗粒作为锂离子电池的高性能阳极
DOI：
10.1016/j.jallcom.2021.162089
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发表时间：
2022-02
影响因子：
6.2
通讯作者：
Zheng Jun-chao
中科院分区：
文献类型：
--
作者：
Wang Ran-cheng;Pan Qing-lin;Luo Yu-hong;Yan Cheng;He Zhen-jiang;Mao Jing;Dai Kehua;Wu Xian-wen;Zheng Jun-chao
硫化锡因其高比容量而成为锂离子电池极具吸引力的负极材料之一。然而，其体积膨胀大（>300%）和电子导电性低限制了其应用。本研究通过静电吸引将Sn2+固定在ti3c2纳米片上，并通过水热法合成Ti3C2@SnS@C。所得Ti3C2@SnS@C具有优异的倍率性能和循环性能，可作为锂离子电池的阳极材料。在500毫安/克下，经过420次循环后，其稳定容量为563.5毫安/克，这一数值远高于市售阳极材料。ti3c2还能有效抑制SnS颗粒的体积膨胀。在500 mA/g下循环420次后，Ti3C2@SnS@C电极的体积膨胀率仅为56.8%。这一发现大大优于纯SnS@C电极（209.3%）。
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 Ti3C2nanosheets 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. Ti3C2can 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%).
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