Bismuth sulfide: A high-capacity anode for sodium-ion batteries



Publication Details

Sun, W., Rui, X., Zhang, D., Jiang, Y., Sun, Z., Liu, H. & Dou, S. (2016). Bismuth sulfide: A high-capacity anode for sodium-ion batteries. Journal of Power Sources, 309 135-140.


Exploring high-performance anode materials is currently one of the most urgent issues towards practical sodium-ion batteries (SIBs). In this work, Bi2S3 is demonstrated to be a high-capacity anode for SIBs for the first time. The specific capacity of Bi2S3 nanorods achieves up to 658 and 264 mAh g-1 at a current density of 100 and 2000 mA g-1, respectively. A full cell with Na3V2(PO4)3-based cathode is also assembled as a proof of concept and delivers 340 mAh g-1 at 100 mA g-1. The sodium storage mechanism of Bi2S3 is investigated by ex-situ XRD coupled with high-resolution TEM (HRTEM), and it is found that sodium storage is achieved by a combined conversion-intercalation mechanism.

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