1. Bi2S3/C nanorods as efficient anode materials for lithium-ion batteries.
- Author
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Chai, Wenwen, Yang, Fan, Yin, Weihao, You, Shunzhang, Wang, Ke, Ye, Wenkai, Rui, Yichuan, and Tang, Bohejin
- Subjects
BISMUTH compounds ,ELECTROCHEMICAL analysis ,HYDROGEN sulfide - Abstract
Bi
2 S3 is a promising negative electrode material for lithium storage owing to its high theoretical capacity. Nevertheless, the capacity of Bi2 S3 decays very rapidly upon Li cycling. Here, Bi2 S3 and Bi2 S3 /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·(CH3 OH)2 (denoted as Bi-BTC). Trimesic acid further acted as a new type of carbon source to synthesize the Bi2 S3 /C composite. The particle sizes of the composite were smaller than those of pure Bi2 S3 , showing the suppression of Bi2 S3 aggregation. Charge–discharge performance and cyclability for both the Bi2 S3 and Bi2 S3 /C composites in lithium-ion batteries were measured. Specifically, the specific capacities of Bi2 S3 /C and Bi2 S3 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, Bi2 S3 /C is a promising energy storage material. [ABSTRACT FROM AUTHOR]- Published
- 2019
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