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Bi2S3/C nanorods as efficient anode materials for lithium-ion batteries

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Abstract

Bi2S3 is a promising negative electrode material for lithium storage owing to its high theoretical capacity. Nevertheless, the capacity of Bi2S3 decays very rapidly upon Li cycling. Here, Bi2S3 and Bi2S3/C were successfully synthesized by a novel route. Sulfur powder as a kind of sulfur source reacted with a metal organic framework based on bismuth and trimesinic acid—Bi(BTC)(DMF)·DMF·(CH3OH)2 (denoted as Bi-BTC). Trimesic acid further acted as a new type of carbon source to synthesize the Bi2S3/C composite. The particle sizes of the composite were smaller than those of pure Bi2S3, showing the suppression of Bi2S3 aggregation. Charge–discharge performance and cyclability for both the Bi2S3 and Bi2S3/C composites in lithium-ion batteries were measured. Specifically, the specific capacities of Bi2S3/C and Bi2S3 reached 765 and 603 mA h g−1, respectively, at 100 mA g−1 after 100 cycles. Because of its high capacity and excellent cycle life, Bi2S3/C is a promising energy storage material.

Graphical abstract: Bi2S3/C nanorods as efficient anode materials for lithium-ion batteries

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Publication details

The article was received on 17 Oct 2018, accepted on 03 Jan 2019 and first published on 04 Jan 2019


Article type: Paper
DOI: 10.1039/C8DT04158J
Citation: Dalton Trans., 2019, Advance Article
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    Bi2S3/C nanorods as efficient anode materials for lithium-ion batteries

    W. Chai, F. Yang, W. Yin, S. You, K. Wang, W. Ye, Y. Rui and B. Tang, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C8DT04158J

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