Yu S, Wan Y, Shang C, Wang Z, Zhou L, Zou J, Cheng H, Lu Z. Ultrafine NaTi
2(PO
4)
3 Nanoparticles Encapsulated in N-CNFs as Ultra-Stable Electrode for Sodium Storage.
Front Chem 2018;
6:270. [PMID:
30035109 PMCID:
PMC6043649 DOI:
10.3389/fchem.2018.00270]
[Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 06/15/2018] [Indexed: 11/25/2022] Open
Abstract
We present a feasible method for the preparation of one-dimensional N-doping carbon nanofibers encapsulated NaTi2(PO4)3 (NTP-NCNFs) through electrospinning accompanied by calcination. The poor electrical conductivity of NTP is significantly improved and the as-prepared NTP-NCNFs exhibit stable and ultrafast sodium-storage capability. The NTP-NCNFs maintains a stable specific capacity of 121 mAh g-1 at 10 C after 2,000 cycles, which only drop to 105 mAh g-1 after 20,000 cycles. Furthermore, the NTP-NCNFs show excellent rate performance from 0.2 to 20 C, whose recovery efficiency still reaches 99.43%. The superior electrochemical property is mainly attributed to the large specific surface area, high porosity, N-doping carbon coating, and one-dimensional structure of NTP-NCNFs.
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