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Micro‐Mesopores Nitrogen‐Doped Carbon Combined Polar‐MoS 2 as Host for High‐Performance Li‐S Batteries
Author(s) -
Zhao Liping,
Liu Gang,
Xu Shuoyan,
Zhao Ye,
Wang Ya,
Li Dan,
Fu Fang,
Zheng Yue,
Xie Haiming,
Zhang Peng
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904685
Subject(s) - x ray photoelectron spectroscopy , materials science , thermogravimetric analysis , scanning electron microscope , raman spectroscopy , mesoporous material , analytical chemistry (journal) , transmission electron microscopy , chemical engineering , composite number , desorption , adsorption , nanotechnology , chemistry , composite material , chromatography , organic chemistry , catalysis , physics , optics , engineering
A composite of MoS 2 /MMNC (micro‐mesopores nitrogen‐doped carbon) was prepared through a simple hydrothermal method and utilized as a host for Li−S battery. The crystal structure of MoS 2 /MMNC−S composite were tested by X‐ray diffraction (XRD), Raman Spectroscopy and X‐ray photoelectron spectroscopy (XPS). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize its morphology. The pore size distribution and weight ratio of sulfur were measured via N 2 adsorption‐desorption isotherm and thermogravimetric analysis (TGA), respectively. MoS 2 /MMNC−S composite showed a good electrochemical performance as the positive electrode for Li−S battery. The rate performance of the battery is ideal and the capacity retention is maintained at ∼ 90% after 200 cycles at 0.5 C.