Enhanced Electrochemical Performance by In Situ Phase Transition from SnS2 Nanoparticles to SnS Nanorods in N‑Doped Hierarchical Porous Carbon as Anodes for Lithium-Ion Batteries

Tin sulfides have attracted great attention as promising anode materials for lithium-ion batteries due to their high theoretical specific capacity. However, the rapid capacity decay, resulting from the structural instability of tin-sulfide-based anodes over cycling, impedes its practical application...

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Bibliographic Details
Published in:ACS applied energy materials 2020-11, Vol.3 (11), p.11318-11325
Main Authors: Hu, Qianqian, Wang, Biao, Hu, Chunjiao, Hu, Yunjian, Lu, Jiqun, Dong, Haiyong, Wu, Chunyu, Chang, Shiyong, Zhang, Lingzhi
Format: Article
Language:English
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Summary:Tin sulfides have attracted great attention as promising anode materials for lithium-ion batteries due to their high theoretical specific capacity. However, the rapid capacity decay, resulting from the structural instability of tin-sulfide-based anodes over cycling, impedes its practical applications. Herein, the simple and controllable synthesis of one-dimensional (1D) SnS nanorods decorated in N-doped hierarchical porous carbon (N-HPC/SnS) through in situ phase transformation from N-HPC/SnS2 under thermal annealing is carried out. This structural design leads to fast ion/electron transport and enough space for volume variations. The resultant electrochemical test verifies the advantages of the as-developed materials, which exhibits great cycling stability with a high specific capacity of 638.74 mAh/g over 800 cycles at 0.5 A/g.
ISSN:2574-0962
2574-0962
DOI:10.1021/acsaem.0c02257