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Submicrospherical and Porous Bi 2 S 3 Protected by Nitrogen‐Doped Carbon for Practical Anode Fabrication of Li‐Ion Batteries
Author(s) -
Cao Zhang,
Shao Jie,
Wang Wei,
Huang Weibo,
Long Fu,
Qu Qunting,
Zheng Honghe
Publication year - 2020
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202000013
Subject(s) - anode , materials science , fabrication , electrochemistry , porosity , nanocomposite , electrode , carbon fibers , chemical engineering , doping , coating , ion , nanotechnology , nitrogen , composite material , optoelectronics , composite number , chemistry , organic chemistry , pathology , engineering , medicine , alternative medicine
Research on alloy‐type anode materials with micro/submicrospherical morphology is of great significance for the development of high energy‐density Li‐ion batteries. A facile and cost‐effective route is adopted to prepare homogeneous submicrospherical and porous Bi 2 S 3 @nitrogen‐doped carbon (NC) nanocomposites, which exhibit considerably better Li‐storage performance than pure Bi 2 S 3 and Bi 2 O 3 submicrospheres. Analyses on the electrochemical behavior and morphology of the electrode show that the good performance of Bi 2 S 3 @NC can be correlated with its stable submicrospherical structure and decreased charge‐transfer resistance, for which the NC coating layer and porous interior of Bi 2 S 3 are supposed to be the two main contributors. The submicrospherical structure and facile synthesis of Bi 2 S 3 @NC will be very suitable for practical electrode fabrication technology of Li‐ion batteries.