Synthesis of novel CuS with hierarchical structures and its application in lithium-ion batteries

Han, Yan; Wang, Yaping; Gao, Wenhong; Wang, Yijing; Jiao, Lifang; Yuan, Huatang; Liu, Shuangxi

doi:10.1016/j.powtec.2011.04.028

Cited by 126 publications

(66 citation statements)

References 32 publications

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“…3c, it is observed that the discharge capacity decreased from 506 mAh g À 1 at the first cycle to 321 mAh g À 1 at the 20th cycle and then increased to a higher value of 642 mAh g À 1 at the 270th cycle. The capacity is sustained to the 360th cycle, which suggests the good cyclability of the CuS electrode compared with those ARTICLE reported previously [23][24][25] . The increase of capacity from the 20th to the 270th cycle indicates a possible activation process in the electrode material.…”

Section: Synthesis and Characterization Of Ultrathin Cus Nanosheetssupporting

confidence: 69%

A general method for the large-scale synthesis of uniform ultrathin metal sulphide nanocrystals

et al. 2012

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Ultrathin metal sulphide nanomaterials exhibit many unique properties, and are thus attractive materials for numerous applications. However, the high-yield, large-scale synthesis of well-defined ultrathin metal sulphide nanostructures by a general and facile wet-chemical method is yet to be realized. Here we report a universal soft colloidal templating strategy for the synthesis of high-quality ultrathin metal sulphide nanocrystals, that is 3.2 nm-thick hexagonal CuS nanosheets, 1.8 nm-diameter hexagonal ZnS nanowires, 1.2 nm-diameter orthorhombic Bi 2 S 3 nanowires and 1.8 nm-diameter orthorhombic Sb 2 S 3 nanowires. As a proof of concept, the ultrathin CuS nanosheets are used to fabricate an electrode for a lithium-ion battery, which exhibits a large capacity and good cycling stability, even after 360 cycles. Furthermore, high-yield, gram-scale production of these ultrathin metal sulphide nanomaterials has been achieved (B100%, without size-sorting process). Our method could be broadly applicable for the high-yield production of novel ultrathin nanostructures with great promise for various applications.

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Section: Synthesis and Characterization Of Ultrathin Cus Nanosheetssupporting

confidence: 69%

A general method for the large-scale synthesis of uniform ultrathin metal sulphide nanocrystals

et al. 2012

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“…However, Cu 2 S suffers from a rapid capacity decay during cycling [2,14,15], which is attributed to the high solubility (in organic solvent electrolytes) of the polysulfide ions formed during the charge/discharge processes. The dissolution of the polysulfides resulted in low active material utilization, low coulombic efficiency and poor cycle life of Cu 2 S electrodes, thus the composition and polarity of the electrolyte can affect the cycling stability of Cu 2 S or CuS dramatically [7,16,17]. For example, Cu 2 S electrode exhibited a good cycling performance with capacity retained at about 200 mAh g À1 after 150 cycles and coulombic efficiency of 98.4% in 1,3-dioxolane (DOL)/1,2-dimethoxyethane (DME) (1 M LiTFSI) electrolyte, on the other hand, its capacities rapidly dropped to 0 mAh g À1 after five cycles in ethylene carbonate (EC)/dimethyl carbonate (DMC) (1 M LiPF 6 ) electrolyte [7].…”

Section: Introductionmentioning

confidence: 99%

New Insight into the Interaction between Carbonate-based Electrolyte and Cuprous Sulfide Electrode Material for Lithium Ion Batteries

Shi

et al. 2015

Electrochimica Acta

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“…Transition metal chalcogenides are found to be promising for this purpose as they have inherent ability to absorb light in the visible and near infrared regions (Gorai et al 2005;Xiong et al 2010;Guo et al 2011). Copper sulfides with various stoichiometries are important p-type semiconductors of this series with technological applications in solar cells (Mane and Lokhande 2000), optical filters (Li et al 2002), lithium rechargeable batteries (Han et al 2011), catalysis (Meng et al 2013;Basu et al 2010), and gas sensing (Setkus et al 2001). Specifically, covellite CuS, a greenish black solid, is of particular interest to the researchers as it shows metal-like conductivity and chemical sensing capacity and can be transformed into superconductor at a low temperature of 1.6 K (Zhang et al 2003;Ou et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CuS nanoparticles by a wet chemical route and their photocatalytic activity

et al. 2015

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CuS nanoparticles (NPs) of few nanometers in size were prepared by a wet chemical method. The structural, compositional, and optical properties of the NPs were characterized by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, micro Raman and Fourier transform infrared spectroscopy, N 2 adsorption-desorption isotherms, and UV-Vis diffuse reflectance spectroscopy. The XRD pattern proved the presence of hexagonal phase of CuS particles which was further supported by Raman spectrum. The estimated band gap energy of 2.05 eV for the slightly sulfur-rich CuS NPs is relatively larger than that of bulk CuS (1.85 eV), indicating the small size effect. As-prepared NPs showed excellent photocatalytic activity for the degradation of methylene blue (MB) under visible light. The surface-bound OH -ions at the CuS nanostructures help adsorb MB molecules facilitating their degradation process under visible light illumination. The studies presented in this paper suggest that the synthesized CuS NPs are promising, efficient, stable, and visible-light-sensitive photocatalyst for the remediation of wastewater polluted by chemically stable azo dyes such as MB.

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Synthesis of novel CuS with hierarchical structures and its application in lithium-ion batteries

Cited by 126 publications

References 32 publications

A general method for the large-scale synthesis of uniform ultrathin metal sulphide nanocrystals

A general method for the large-scale synthesis of uniform ultrathin metal sulphide nanocrystals

New Insight into the Interaction between Carbonate-based Electrolyte and Cuprous Sulfide Electrode Material for Lithium Ion Batteries

Synthesis of CuS nanoparticles by a wet chemical route and their photocatalytic activity

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