The highly enhanced performance of lamellar WS2 nanosheet electrodes upon intercalation of single-walled carbon nanotubes for supercapacitors and lithium ions batteries

Liu, Yu; Wang, Wei; Huang, Hubiao; Gu, Lin; Wang, Yewu; Peng, Xinsheng

doi:10.1039/c4cc01622j

Cited by 145 publications

(108 citation statements)

References 27 publications

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“…The irreversible initial capacity loss of 54 % might be primarily ascribed to various irreversible processes such as the inevitable formation of the solid electrolyte interface (SEI) layer, the organic conductive polymer, the storage of interfacial lithium, and the decomposition of the electrolyte. [37][38][39][40] Figure 5c compares the cycling performance of CC-550 with pure CuO at a current density of 0.1 C. Remarkably, CC-550 exhibited much better stable reversible capacities than that of the pure CuO anode and retained a high specific capacity of approximately 607.8 mA h g À1 after 50 cycles. During all 50 cycles, the Coulombic efficiency of CC-550 approached approximately 100 %, thus demonstrating a tremendous reversibility.…”

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confidence: 88%

Core–Shell Carbon‐Coated CuO Nanocomposites: A Highly Stable Electrode Material for Supercapacitors and Lithium‐Ion Batteries

Wen

Zhang

et al. 2015

Chemistry An Asian Journal

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Herein we present a simple method for fabricating core-shell mesostructured CuO@C nanocomposites by utilizing humic acid (HA) as a biomass carbon source. The electrochemical performances of CuO@C nanocomposites were evaluated as an electrode material for supercapacitors and lithium-ion batteries. CuO@C exhibits an excellent capacitance of 207.2 F g(-1) at a current density of 1 A g(-1) within a potential window of 0-0.46 V in 6 M KOH solution. Significantly, CuO electrode materials achieve remarkable capacitance retentions of approximately 205.8 F g(-1) after 1000 cycles of charge/discharge testing. The CuO@C was further applied as an anode material for lithium-ion batteries, and a high initial capacity of 1143.7 mA h g(-1) was achieved at a current density of 0.1 C. This work provides a facile and general approach to synthesize carbon-based materials for application in large-scale energy-storage systems.

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confidence: 88%

Core–Shell Carbon‐Coated CuO Nanocomposites: A Highly Stable Electrode Material for Supercapacitors and Lithium‐Ion Batteries

Wen

Zhang

et al. 2015

Chemistry An Asian Journal

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“…Other metal suldes such as WS 2 are also synthesized for HER, supercapacitor and battery applications. [20][21][22] As an important member of the transition metal sulde family, cobalt sulde is considered to be one of the promising candidates for such applications. Accordingly, various phases of cobalt suldes have been synthesized and studied for supercapacitor and HER applications.…”

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confidence: 99%

Highly stable hollow bifunctional cobalt sulfides for flexible supercapacitors and hydrogen evolution

et al. 2016

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Hollow structures of NiAs-type cobalt sulfide have been synthesized by a facile hydrothermal method. These hollow structured cobalt sulfides exhibit excellent electrochemical properties for supercapacitor applications (867 F g À1) and respectable hydrogen evolution activity.The symmetrical supercapacitor device fabricated using cobalt sulfide nanostructures showed an areal capacitance of 260 mF cm À2 with good flexibility and high temperature stability. The specific capacitance of the supercapacitor is enhanced over 150%, when the temperature is increased from 10 to 70 C.Over the last few decades, the increasing demand for energy has motivated the scientic community to develop high performance, sustainable, cost-effective and environmentally friendly materials for energy conversion and storage applications. 1-4Undoubtedly, materials for supercapacitors and hydrogen evolution are among the widely studied ones for these purposes. Supercapacitors are electrochemical energy storage devices primarily appealing for their excellent power density and long cycle life. 4-7 Carbon based electrodes are suitable for delivering high power density but have low energy density.8 Nevertheless, in recent years, the energy density of supercapacitors has been boosted by the use of metal oxides, which in turn sacrices the cycle life.4 Second, energy generation using a cleaner and cheaper method is of high importance due to increasing concerns of carbon emission. Hydrogen generation by splitting water is highly desired. The hydrogen evolution reaction (HER) is one of the key steps in the water splitting process.9 Ideally, the thermodynamic potential for the hydrogen evolution reaction should be at 0 V (vs. SHE). However, without an efficient catalyst, this reaction occurs at high overpotential.10 Presently, platinum is the most effective and durable catalyst for the hydrogen evolution reaction, but its widespread use is precluded due to its high cost and limited availability.At this juncture, it is essential to develop cost effective, sustainable and stable materials for both supercapacitor and HER applications. Recently, transition metal chalcogenides have attracted considerable attention for energy applications such as fuel cells, supercapacitors and batteries due to their high abundance, low cost and decent performance. 17Hierarchically porous nickel sulde has been synthesized for both the HER and oxygen evolution reaction (OER).18 The synthesized nickel sulde showed overpotentials of 60 mV for the HER and 180 mV for the OER in 1.0 M KOH at a current density of 10 mA cm À2 , respectively. Sharma et al. have synthesised ower-like ZnS for charge storage applications. 19They observed a high specic capacitance (226 F g À1 ) and specic capacitance was observed to decrease by 60% on increasing the scan rate from 20 to 200 mV s À1 . Other metal suldes such as WS 2 are also synthesized for HER, supercapacitor and battery applications. [20][21][22] As an important member of the transition metal sulde family, cobalt sulde is consi...

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“…5B), leading to an irreversible capacity loss of 24% even at a lower current density of 0.1 A g À1 [33,34]. The great loss of irreversible capacity observed in the first cycle might be caused by the formation of amorphous Li 2 O and solid electrolyte interface (SEI) layer [35]. In the subsequent cycles, the Co 3 O 4 / mC-CE showed excellent capacity retention, whereas the Co 3 O 4 / mC-E electrode decreased rapidly.…”

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confidence: 98%

CO2 assisted synthesis of highly dispersed Co3O4 nanoparticles on mesoporous carbon for lithium ion battery

Wang

Liang

Shi

et al. 2015

Journal of Alloys and Compounds

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The highly enhanced performance of lamellar WS2 nanosheet electrodes upon intercalation of single-walled carbon nanotubes for supercapacitors and lithium ions batteries

Abstract: Hybrid lamellar porous electrodes with excellent electrochemical performance were successfully fabricated by homogeneously intercalating single-walled carbon nanotubes into the lamellar assembled WS2 nanosheets through vacuum filtration.

Cited by 145 publications

References 27 publications

Core–Shell Carbon‐Coated CuO Nanocomposites: A Highly Stable Electrode Material for Supercapacitors and Lithium‐Ion Batteries

Core–Shell Carbon‐Coated CuO Nanocomposites: A Highly Stable Electrode Material for Supercapacitors and Lithium‐Ion Batteries

Highly stable hollow bifunctional cobalt sulfides for flexible supercapacitors and hydrogen evolution

CO2 assisted synthesis of highly dispersed Co3O4 nanoparticles on mesoporous carbon for lithium ion battery

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