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Sn 4 P 3 /SbSn Nanocomposites for Anode Application in Sodium‐Ion Batteries
Author(s) -
Lan Danni,
Li Quan
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201800639
Subject(s) - anode , nanocomposite , electrochemistry , materials science , electrode , composite number , phase (matter) , ion , sodium , nanoparticle , chemical engineering , nanotechnology , composite material , chemistry , metallurgy , organic chemistry , engineering
A facile one‐pot solvothermal method has been developed to synthesize Sn 4 P 3 /SbSn nanocomposites with a side‐by‐side configuration in individual nanoparticles. We show that introducing SbSn to Sn 4 P 3 in such a configuration can improve the cyclic stability of the phase‐pure Sn 4 P 3 electrode without sacrificing its practical capacity, although the theoretical capacity of SbSn is lower than that of Sn 4 P 3 . The nanocomposite anode delivers a highest capacity of 614.7 mA h g −1 at a current density of 100 mA g −1 and shows superior capacity retention to the phase pure Sn 4 P 3 , SbSn, or physical mixture of Sn 4 P 3 &SbSn based anodes after long cycles. The intact interface between the Sn 4 P 3 and SbSn in the nanocomposite and their synergetic effect play important roles in enhancing the electrochemical performance of the composite electrode.