Synthesis and characterization of nanosize cobalt sulfide for rechargeable lithium batteries

Wang, J.; Ng, See How; Wang, G.X.; Chen, J.; Zhao, Lincheng; Chen, Y.; Liu, Huan

doi:10.1016/j.jpowsour.2006.04.092

Cited by 108 publications

(73 citation statements)

References 13 publications

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“…1 (c and d) shows that the annealed MoS 2 samples exhibit much higher and sharper diffraction peaks than before, which indicate that the annealed MoS 2 samples have high crystallinity. The facts demonstrated that the annealing could greatly increase the crystalllinity of MoS 2 as reported in literature [8,18].…”

Section: Structural Characteristics Of Mossupporting

confidence: 73%

Electrochemical lithiation/delithiation performances of 3D flowerlike MoS2 powders prepared by ionic liquid assisted hydrothermal route

et al. 2009

Journal of Alloys and Compounds

159

117

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Section: Structural Characteristics Of Mossupporting

confidence: 73%

Electrochemical lithiation/delithiation performances of 3D flowerlike MoS2 powders prepared by ionic liquid assisted hydrothermal route

et al. 2009

Journal of Alloys and Compounds

159

117

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“…[22] Cobalt sulfides with different stoichiometric ratios, such as Co 1Àx S, CoS, CoS 2 , Co 9 S 8 , and Co 3 S 4 , are the most important type of metal chalcogenides. These cobalt sulfides have shown great potential for use in LIBs, [18,[23][24][25] semiconductors, [26] magnets, catalysts, [12,13,[27][28][29][30] and photocatalytic degradation. [32] The thermal stability and electrical conductivity of cobalt sulfides are much better than those of other metal sulfides, [23] however, they have a number of major drawbacks, namely Abstract: Cobalt sulfide is a good candidate for both lithium ion batteries (LIBs) and cathodic oxygen reduction reaction (ORR), but low conductivity, poor cyclability, capacity fading, and structural changes hinder its applications.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Co₃S₄/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction

Mahmood

Zhang

Jiang

et al. 2013

Chemistry A European J

220

181

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Cobalt sulfide is a good candidate for both lithium ion batteries (LIBs) and cathodic oxygen reduction reaction (ORR), but low conductivity, poor cyclability, capacity fading, and structural changes hinder its applications. The incorporation of graphene into Co3S4 makes it a promising electrode by providing better electrochemical coupling, enhanced conductivity, fast mobility of ions and electrons, and a stabilized structure due to its elastic nature. With the objective of achieving high-performance composites, herein we report a facile hydrothermal process for growing Co3S4 nanotubes (NTs) on graphene (G) sheets. Electrochemical impedance spectroscopy (EIS) verified that graphene dramatically increases the conductivity of the composites to almost twice that of pristine Co3S4. Electrochemical measurements indicated that the as-synthesized Co3S4/G composites exhibit good cyclic stability and a high discharge capacity of 720 mA h g(-1) up to 100 cycles with 99.9% coulombic efficiency. Furthermore, the composites react with dissolved oxygen in the ORR by four- and two-electron mechanisms in both acidic and basic media with an onset potential close to that of commercial Pt/C. The stability of the composites is much higher than that of Pt/C, and exhibit high methanol tolerance. Thus, these properties endorse Co3 S4 /G composites as auspicious candidates for both LIBs and ORR.

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“…However, no authors have ever reported the significant lithium storage in PPy or PPy-metal complexes below 3.0 V, to our knowledge. The reasons www.chemeurj.org might be that 1) the cutoff discharge voltage is not low enough (for the PPy-coated cathode materials [16][17][18][19] ) and 2) the content of the PPy coating is usually low (< 10 wt %) in the composite.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically Fabricated Polypyrrole–Cobalt–Oxygen Coordination Complex as High‐Performance Lithium‐Storage Materials

Guo

Kong

Zhu

et al. 2011

Chemistry A European J

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Current lithium-ion battery (LIB) technologies are all based on inorganic electrode materials, though organic materials have been used as electrodes for years. Disadvantages such as limited thermal stability and low specific capacity hinder their applications. On the other hand, the transition metal oxides that provide high lithium-storage capacity by way of electrochemical conversion reaction suffer from poor cycling stability. Here we report a novel high-performance, organic, lithium-storage material, a polypyrrole-cobalt-oxygen (PPy-Co-O) coordination complex, with high lithium-storage capacity and excellent cycling stability. Extended X-ray absorption fine structure and Raman spectroscopy and other physical and electrochemical characterizations demonstrate that this coordination complex can be electrochemically fabricated by cycling PPy-coated Co(3)O(4) between 0.0 V and 3.0 V versus Li(+)/Li. Density functional theory (DFT) calculations indicate that each cobalt atom coordinates with two nitrogen atoms within the PPy-Co coordination layer and the layers are connected with oxygen atoms between them. Coordination weakens the C-H bonds on PPy and makes the complex a novel lithium-storage material with high capacity and high cycling stability.

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Synthesis and characterization of nanosize cobalt sulfide for rechargeable lithium batteries

Cited by 108 publications

References 13 publications

Electrochemical lithiation/delithiation performances of 3D flowerlike MoS2 powders prepared by ionic liquid assisted hydrothermal route

Electrochemical lithiation/delithiation performances of 3D flowerlike MoS2 powders prepared by ionic liquid assisted hydrothermal route

Multifunctional Co₃S₄/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction

Electrochemically Fabricated Polypyrrole–Cobalt–Oxygen Coordination Complex as High‐Performance Lithium‐Storage Materials

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Synthesis and characterization of nanosize cobalt sulfide for rechargeable lithium batteries

Cited by 108 publications

References 13 publications

Electrochemical lithiation/delithiation performances of 3D flowerlike MoS2 powders prepared by ionic liquid assisted hydrothermal route

Electrochemical lithiation/delithiation performances of 3D flowerlike MoS2 powders prepared by ionic liquid assisted hydrothermal route

Multifunctional Co3S4/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction

Electrochemically Fabricated Polypyrrole–Cobalt–Oxygen Coordination Complex as High‐Performance Lithium‐Storage Materials

Contact Info

Product

Resources

About

Multifunctional Co₃S₄/Graphene Composites for Lithium Ion Batteries and Oxygen Reduction Reaction