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Micro/Nanostructure‐Dependent Electrochemical Performances of Sb 2 O 3 Micro‐Bundles as Anode Materials for Sodium‐Ion Batteries
Author(s) -
Yang Leping,
Huang Yuli,
Li Xiaoyun,
Sheng Jian,
Li Feng,
Xie Zhaojun,
Zhou Zhen
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.201800618
Subject(s) - anode , materials science , electrochemistry , nanostructure , nanotechnology , electrolyte , energy storage , electrode , hydrothermal circulation , ion , electrical conductor , diffusion , chemical engineering , composite material , chemistry , power (physics) , physics , organic chemistry , quantum mechanics , engineering , thermodynamics
Sodium ion batteries (SIBs) are regarded as promising next‐generation energy storage devices due to their decent theoretical energy density and especially low cost. Here, micro/nanostructured Sb 2 O 3 micro‐bundles consisting of many abreast nanoribbons were prepared via a simple hydrothermal route. In this unique structure, both ends of Sb 2 O 3 nanoribbons with the thickness of ∼50 nm scatter with each other and extend radially from the center point, which not only reserves more space between nanoribbons to accommodate volume changes, but also provides plenty of open channels to facilitate the intimate contact of active species, conductive agents and electrolytes, thus efficiently shortening diffusion paths of Na + /e − . Evaluated as anode materials for SIBs, Sb 2 O 3 micro‐bundles delivered outstanding electrochemical performance: high reversible capacity, superb rate capability, and stable cyclic ability. To get more insight, both the morphology evolution and the effect on electrochemical performance were explored as well, which further verified the significance of designing micro/nanostructured electrode materials in advanced energy storage fields.