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Polypyrrole‐Coated Zinc Ferrite Hollow Spheres with Improved Cycling Stability for Lithium‐Ion Batteries
Author(s) -
Sun Xiaoran,
Zhang Hongwei,
Zhou Liang,
Huang Xiaodan,
Yu Chengzhong
Publication year - 2016
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.201601143
Subject(s) - polypyrrole , materials science , anode , coating , polymerization , nanotechnology , chemical engineering , composite material , electrode , polymer , chemistry , engineering
Here, ZnFe 2 O 4 double‐shell hollow microspheres are designed to accommodate the large volume expansion during lithiation. A facile and efficient vapor‐phase polymerization method has been developed to coat the ZnFe 2 O 4 hollow spheres with polypyrrole (PPY). The thin PPY coating improves not only the electronic conductivity but also the structural integrity, and thus the cycling stability of the ZnFe 2 O 4 hollow spheres. Our work sheds light on how to enhance the electrochemical performance of transition metal oxide‐based anode materials by designing delicate nanostructures.