☆ 4.6 Article

N-doped CMK-3 anchored with SnS2 nanosheets as anode of lithium ion batteries with superior cyclic performance and enhanced reversible capacity

JOURNAL OF SOLID STATE CHEMISTRY (2018)

Journal

JOURNAL OF SOLID STATE CHEMISTRY

Volume 265, Issue -, Pages 424-430

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE

DOI: 10.1016/j.jssc.2018.06.015

Keywords

SnS2 nanosheets; High initial capacity; Electrochemical performance; Lithium ion batteries; Mesoscale porosity

Categories

Chemistry, Inorganic & Nuclear Chemistry, Physical

Funding

National Natural Science Foundation of China [21663029, 21461024, 21301147, 21661029]

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Abstract

The composites of N-doped ordered mesoporous carbon (N-CMK-3) anchored with tin disulfide (SnS2) nanosheets (NSs) have been synthesized via a maneuverable hot bath method at low temperature. The as synthesized SnS2@N-CMK-3 composites exhibit a hierarchical structure with two dimensional (2D) SnS2 nanosheets uniformly grown on N-CMK-3, leading to a large specific area (126.7 m(2) g(-1)) with mesoscale porosity. As anode material for lithium ion batteries (LIBs), SnS2@N-CMK-3 composite exhibits a high initial capacity of 1438.9 mA h g(-1) (200 mA g(-1)). Moreover, the electrochemical performance remained at 618.9 mA h g(-1) after 200 cycles, which are significantly higher than that of the pristine SnS2. The outstanding electrochemical properties might be due to the 2D nanosheet-morphology feature of SnS2 and the addition of N-CMK-3 that could availably inhibit the agglomeration of active substances and raise the conductivity of the composite electrode.

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Synthesis, structural, morphology, spectroscopic and optical study of new metal orthophosphate MII(Ga0.5Sb0.5)(PO4)2 (MII= Sr, Pb, Ba) compounds

Rachid Fakhreddine, Ali Ouasri, Abderrahim Aatiq

Summary: This paper reports the synthesis, structure, and spectroscopic studies of three novel metal orthophosphate salts. The structures of these compounds were refined using X-ray powder diffraction data. The infrared and Raman analysis revealed their symmetries and the UV-visible investigation determined their optical properties.

JOURNAL OF SOLID STATE CHEMISTRY (2024)

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