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Ultrafine NaTi₂(PO₄)₃ Nanoparticles Encapsulated in N-CNFs as Ultra-Stable Electrode for Sodium Storage.

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.

SUBMITTER: Yu S

PROVIDER: S-EPMC6043649 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Ultrafine NaTi2(PO4)3 Nanoparticles Encapsulated in N-CNFs as Ultra-Stable Electrode for Sodium Storage.

Yu Sicen S Wan Yi Y Shang Chaoqun C Wang Zhenyu Z Zhou Liangjun L Zou Jianli J Cheng Hua H Lu Zhouguang Z

Frontiers in chemistry 20180706

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 ...[more]

PMID: 30035109

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