Carbon-coated Bi5Nb3O15 as anode material in rechargeable batteries for enhanced lithium storage. Issue 10 (July 2018)

• Record Type: Journal Article
• Authors: Li, Yuhang; Zheng, Runtian; Yu, Haoxiang; Cheng, Xing; Zhu, Haojie; Bai, Ying; Liu, Tingting; Shui, Miao; Shu, Jie
• Is Part Of: Ceramics international. Volume 44:Issue 10(2018)
• Page Start: 11505
• Page End: 11511
• Publication Date: 2018-07
• Subjects: Bi5Nb3O15 @C -- Anode material -- Alloying reaction -- In-situ XRD -- Lithium-ion batteries; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.03.213
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Bismuth can alloy with lithium to generate Li3 Bi with the volumetric capacity of about 3765 mAh cm −3 (386 mAh g −1 ), rendering bismuth-based materials as attractive alloying-type electrode materials for rechargeable batteries. In this work, bismuth-based material Bi5 Nb3 O15 @C is fabricated as anode material through a traditional solid-state reaction with glucose as carbon source. Bi5 Nb3 O15 @C composite is well dispersed, with small particle size of 0.5–2.0 µm. The electrochemical performance of Bi5 Nb3 O15 @C is reinforced by carbon-coated layer as desired. The Bi5 Nb3 O15 @C exhibits a high specific capacity of 338.56 mAh g −1 at a current density of 100 mA g −1 . And it also presents an excellent cycling stability with a capacity of 212.06 mAh g −1 over 100 cycles at 100 mA g −1 . As a comparison, bulk Bi5 Nb3 O15 without carbon-coating only remains 319.62 mAh g −1 at 100 mA g −1, revealing poor cycle and rate performances. Furthermore, in-situ X-ray diffraction experiments investigate the alloying/dealloying behavior of Bi5 Nb3 O15 @C. These insights will benefit the discovery of novel anode materials for lithium-ion batteries.