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Cover Picture: In Situ Formation of Co 9 S 8 /N‐C Hollow Nanospheres by Pyrolysis and Sulfurization of ZIF‐67 for High‐Performance Lithium‐Ion Batteries (Chem. Eur. J. 40/2017)
Author(s) -
Zeng Peiyuan,
Li Jianwen,
Ye Ming,
Zhuo Kaifeng,
Fang Zhen
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201701422
Subject(s) - materials science , nanocomposite , electrochemistry , anode , pyrolysis , lithium (medication) , nanoparticle , chemical engineering , dispersion (optics) , polymer , carbon fibers , electrode , nanotechnology , composite number , composite material , chemistry , medicine , endocrinology , engineering , physics , optics
A nanocomposite based on the homogeneous dispersion of Co 9 S 8 nanoparticles within the shell of N‐rich carbon hollow spheres (Co 9 S 8 /N‐C) was prepared by an in situ pyrolysis and sulfurization process, employing the Co II ‐imidazole coordination polymer ZIF‐67 as the precursor. The as‐prepared Co 9 S 8 /N‐C hollow nanospheres exhibit good electrochemical performance and long‐term cycling stability (≈784 mAh g −1 at 1 C after 400 cycles) when applied as anode material for lithium‐ion batteries, which likely results from the unique hollow hybrid structures. More information can be found in the Full Paper by Z. Fang et al. on page 9517.