In-situ preparation of nitrogen-doped carbon-modified lithium vanadium phosphate fibers with mesoporous nanostructure for lithium energy storage. Issue 11 (1st August 2019)

• Record Type: Journal Article
• Authors: Cao, Zhenheng; Fang, Ting; Hou, Xueyan; Niu, Jiajia
• Is Part Of: Ceramics international. Volume 45:Issue 11(2019)
• Page Start: 14474
• Page End: 14478
• Publication Date: 2019-08-01
• Subjects: Fibers -- Lithium vanadium phosphate -- N-doped carbon -- Mesoporous; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.04.198
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: To significantly enhance the lithium storage performance of lithium vanadium phosphate (Li3 V2 (PO4 )3 ), nitrogen-doped carbon-modified Li3 V2 (PO4 )3 fibers with mesoporous structure have been designed and prepared for the first time via a simple electrospinning technology. The obtained results demonstrate that the nanosized Li3 V2 (PO4 )3 crystals (10–25 nm) are embedded into the one-dimensional carbon fibers. Meanwhile, the electrochemical tests indicate that the prepared electrode possesses outstanding rate performance for energy storage with a high capacity of 129.2 mAh g −1 over 400 cycles at 20 C. The good battery property can be attributed to the nanosized crystals and conductive mesoporous carbon nanofibers, which can decrease the Li + diffusion pathway and improve the apparent conductivity of the active material.