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Robust SnO 2− x Nanoparticle‐Impregnated Carbon Nanofibers with Outstanding Electrochemical Performance for Advanced Sodium‐Ion Batteries
Author(s) -
Ma Dingtao,
Li Yongliang,
Mi Hongwei,
Luo Shan,
Zhang Peixin,
Lin Zhiqun,
Li Jianqing,
Zhang Han
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201802672
Subject(s) - materials science , electrochemistry , electrode , nanoparticle , sodium , nanofiber , porosity , chemical engineering , nanotechnology , carbon fibers , ion , void (composites) , electrospinning , carbon nanofiber , composite material , carbon nanotube , chemistry , composite number , metallurgy , organic chemistry , engineering , polymer
The sluggish sodium reaction kinetics, unstable Sn/Na 2 O interface, and large volume expansion are major obstacles that impede practical applications of SnO 2 ‐based electrodes for sodium‐ion batteries (SIBs). Herein, we report the crafting of homogeneously confined oxygen‐vacancy‐containing SnO 2− x nanoparticles with well‐defined void space in porous carbon nanofibers (denoted SnO 2− x /C composites) that address the issues noted above for advanced SIBs. Notably, SnO 2− x /C composites can be readily exploited as the working electrode, without need for binders and conductive additives. In contrast to past work, SnO 2− x /C composites‐based SIBs show remarkable electrochemical performance, offering high reversible capacity, ultralong cyclic stability, and excellent rate capability. A discharge capacity of 565 mAh g −1 at 1 A g −1 is retained after 2000 cycles.
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