Reactivity of transition metal (Co, Ni, Cu) sulphides versus lithium: The intriguing case of the copper sulphide

Débart, Aurélie; Dupont, L.; Patrice, R.; Tarascon, J. M.

doi:10.1016/j.solidstatesciences.2006.01.013

Cited by 246 publications

(235 citation statements)

References 35 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: 70%

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: 70%

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

et al. 2012

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“…MO x +2xLi→M 0 +xLi 2 O, which is different from the intercalation/deintercalation mechanism. Later, reversible lithium storage was also observed in transition metal fluorides as well as sulfides, nitrides, selenides and phosphides [7,8,26,63,81,82,89,94,116]. As opposed to intercalation reactions, the reversible conversion process enables the full redox utilization of the transition metal and has 2-4 times the specific capacity of intercalation compounds as high as 600-1000 mAh.g -1 [54].…”

Section: Kinetic Models For the Lithiation And Delithiation Of Simplementioning

confidence: 99%

Diagnosis of Electrochemical Impedance Spectroscopy in Lithium-Ion Batteries

Zhuang¹,

Qiu²,

Xu³

et al. 2012

Lithium Ion Batteries - New Developments

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“…Previous studies on pyrites 29 and M S y (M = Co, Ni, Cu) 30 45 and hydrogen evolution. 46,47 Here, we demonstrate that porous, amorphous network of molybdenum polysulfide chalcogels perform well as high-capacity, anion-redox driven Li-ion cathode materials.…”

Section: Introductionmentioning

confidence: 99%

Molybdenum Polysulfide Chalcogels as High-Capacity, Anion-Redox-Driven Electrode Materials for Li-Ion Batteries

Subrahmanyam²,

et al. 2016

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Sulfur cathodes in conversion reaction batteries offer high gravimetric capacity but suffer from parasitic polysulfide shuttling. We demonstrate here that transition metal chalcogels of approximate formula MoS 3.4 achieve high gravimetric capacity close to 600 mAh g −1 (close to 1000 mAh g −1 on a sulfur-basis), as electrode materials for lithium-ion batteries. Transition metal chalcogels are amorphous, and comprise polysulfide chains connected by inorganic linkers. The linkers appear to act as a "glue" in the electrode to prevent polysulfide shuttling. The Mo chalcogels function as electrodes in carbonate-as well as ether-based electrolytes, which further provides evidence for polysulfide solubility not being a limiting issue. We employ X-ray spectroscopy and operando pair distribution function techniques to elucidate the structural evolution of the electrode. Raman and X-ray photoelectron spectroscopy track the chemical moieties that arise during the anion-redox-driven processes. We find the redox state of Mo remains unchanged across the electrochemical cycling and correspondingly, the redox

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Reactivity of transition metal (Co, Ni, Cu) sulphides versus lithium: The intriguing case of the copper sulphide

Cited by 246 publications

References 35 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

Diagnosis of Electrochemical Impedance Spectroscopy in Lithium-Ion Batteries

Molybdenum Polysulfide Chalcogels as High-Capacity, Anion-Redox-Driven Electrode Materials for Li-Ion Batteries

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