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Regeneration of Metal Sulfides in the Delithiation Process: The Key to Cyclic Stability
Author(s) -
Li Xiaomin,
Zai Jiantao,
Xiang Shijie,
Liu Yuanyuan,
He Xiaobo,
Xu Zheying,
Wang Kaixue,
Ma Zifeng,
Qian Xuefeng
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201601056
Subject(s) - graphene , materials science , key (lock) , lithium (medication) , nanocomposite , diffusion , process (computing) , nanotechnology , service (business) , metal , computer science , metallurgy , business , thermodynamics , computer security , medicine , physics , marketing , endocrinology , operating system
The regeneration of metal sulfides during the delithiation process is the key to achieving cyclic stability in electrode materials. A graphene‐supported peony‐like MoS 2 nanocomposite with a long cycle life and a high rate capability is designed for this purpose. The synergistic effects of the MoS 2 hierarchical structure and graphene can effectively improve the lithium diffusion dynamics and conductivity, thus greatly suppressing the oxidation of Li 2 S to polysulfides by improving the reversibility of the conversion reaction.