Synthesis of porous carbon-coated polycrystalline Co9S8 for long-term lithium ion battery

•We have successfully fabricated hierarchical porous Co9S8 as anodes for LIBs.•Each nanoparticle is polycrystalline and coated by a thin layer of carbon.•C-CS electrodes exhibited a high-rate property and an excellent cycling stability up to. Long-term stability still remains a big issue for metal s...

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Bibliographic Details
Published in:Materials letters 2018-01, Vol.210, p.88-91
Main Authors: Huang, Jing, Tang, Xuekun, Liu, Kun, Li, Zishun
Format: Article
Language:English
Subjects:
Energy storage and conversion
Lithium ion batteries
Long-term stability
Particles, nanosize
Porous cobalt sulfides
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Summary:•We have successfully fabricated hierarchical porous Co9S8 as anodes for LIBs.•Each nanoparticle is polycrystalline and coated by a thin layer of carbon.•C-CS electrodes exhibited a high-rate property and an excellent cycling stability up to. Long-term stability still remains a big issue for metal sulfides anodes for lithium-ion batteries (LIBs). Porous nano-sized material possesses many advantages. Here, we have successfully synthesized the porous carbon-coated polycrystalline Co9S8 (C-CS), which exhibited a high specific capacity (841mAhg−1) and good rate property (6.4Ag−1) for LIBs. In particular, C-CS electrode showed an excellent cycling stability at 2Ag−1 with a capacity retention of 84.7% after 400 cycles, demonstrating it a promising LIBs anode.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2017.08.110