In:
ChemElectroChem, Wiley, Vol. 6, No. 17 ( 2019-09-02), p. 4402-4410
Abstract:
A facile electrospinning technique followed by pre‐oxidation and carbonization treatment is adopted to synthesize silicon anode cladded with SiO x layer and N‐rich carbon nanofibers (Si@SiO x @NCNFs), in which post‐used polyacrylonitrile (PAN) yarn is chosen as single carbon source. As anode in Li‐ion batteries, elaborately designed Si@SiO x @NCNFs renders remarkable reversible capacities of 1045 mA h g −1 at the 500 th cycle under a current density of 8 A g −1 at 80°C, and 828 mA h g −1 after subsequent 500 cycles at 15 A g −1 , mainly ascribed to the distinct hierarchical structure, N‐rich nature and enhanced pesudocapacitive behavior. When Si@SiO x @NCNFs is matched with commercial cathode LiFePO 4 , full cell delivers a stable capacity of 140 mA h g −1 at 100 mA g −1 , accompanying with an energy density of 455 Wh kg −1 at 50 °C. These conspicuous features undoubtedly enable Si@SiO x @NCNFs to be promising anode materials for high‐power lithium‐ion battery used in harsh conditions.
Type of Medium:
Online Resource
ISSN:
2196-0216
,
2196-0216
DOI:
10.1002/celc.201901111
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2724978-5
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