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Ultrahigh Rate Performance of Hollow Antimony Nanoparticles Impregnated in Open Carbon Boxes for Sodium‐Ion Battery under Elevated Temperature
Author(s) -
Xu Anding,
Xia Qi,
Zhang Shenkui,
Duan Huanhuan,
Yan Yurong,
Wu Songping
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201903521
Subject(s) - antimony , nanoparticle , materials science , battery (electricity) , sodium , sodium ion battery , carbon nanoparticles , carbon fibers , ion , chemical engineering , nanotechnology , inorganic chemistry , electrochemistry , composite material , chemistry , electrode , organic chemistry , metallurgy , composite number , faraday efficiency , engineering , power (physics) , physics , quantum mechanics
Antimony is a competitive and promising anode material for sodium‐ion batteries (SIBs) due to its high theoretical capacity. However, the poor rate capability and fast capacity fading greatly restrict its practical application. To address the above issues, a facile and eco‐friendly sacrificial template method is developed to synthesize hollow Sb nanoparticles impregnated in open carbon boxes (Sb HPs@OCB). The as‐obtained Sb HPs@OCB composite exhibits excellent sodium storage properties even when operated at an elevated temperature of 50 °C, delivering a robust rate capability of 345 mAh g −1 at 16 A g −1 and rendering an outstanding reversible capacity of 187 mAh g −1 at a high rate of 10 A g −1 after 300 cycles. Such superior electrochemical performance of the Sb HPs@OCB can be attributed to the comprehensive characteristics of improved kinetics derived from hollow Sb nanoparticles impregnated into 2D carbon nanowalls, the existence of robust SbOC bond, and enhanced pseudocapacitive behavior. All those factors enable Sb HPs@OCB great potential and distinct merit for large‐scale energy storage of SIBs.