ZnS-Co3S4 nanoscrubber synthesized by hydrothermal route for pseudo-supercapacitors

Kumar, Rajendra; Sreevani, K.; Shanmugavalli, V.; Nagarani, S.; Dhinakaran, V.; Balamurali, R.

doi:10.1016/j.matlet.2021.131418

Cited by 4 publications

(5 citation statements)

References 5 publications

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“…Kumar et al reported that the ZnS-Co 3 S 4 (ZC) nanoscrubbers were synthesized using hydrothermal methods and analyzed using cutting-edge techniques. After hydrothermal treatment at 200 °C and calcination at 300 °C, the average crystallite sizes of ZC1, ZC2, and ZC3 were 4.62, 11.37, and 19.20 nm, respectively.…”

Section: Zns-based Electrodesmentioning

confidence: 99%

“…After hydrothermal treatment at 200 °C and calcination at 300 °C, the average crystallite sizes of ZC1, ZC2, and ZC3 were 4.62, 11.37, and 19.20 nm, respectively. The HR-SEM analysis of ZnS-Co 3 S 4 nanocomposites revealed nanoscrubber-like features …”

Section: Zns-based Electrodesmentioning

confidence: 99%

“…These materials indicated the potential use of 2D-ZFS@CC as a negative electrode material for supercapacitor electrodes of the future generation. 125 Kumar et al 154 reported that the ZnS-Co 3 S 4 (ZC) nanoscrubbers were synthesized using hydrothermal methods and analyzed using cutting-edge techniques. After hydrothermal treatment at 200 °C and calcination at 300 °C, the average crystallite sizes of ZC1, ZC2, and ZC3 were 4.62, 11.37, and 19.20 nm, respectively.…”

Section: Zns-based Electrodesmentioning

confidence: 99%

“…The HR-SEM analysis of ZnS-Co 3 S 4 nanocomposites revealed nanoscrubber-like features. 154 Zia and colleagues 155 used a hydrothermal method to fabricate a ZnO@ZnS nanocomposite for hybrid supercapacitors. The ZnO surface was covered by aggregated nanoparticles of ZnS with an amorphous morphology and a size range of 50−80 nm.…”

Section: Zns-based Electrodesmentioning

confidence: 99%

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Review and Outlook of Zinc Sulfide Nanostructures for Supercapacitors

Saleem,

Khalid,

Malik

et al. 2024

Energy Fuels

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Supercapacitors have increased considerable interest due to their unique characteristics such as extended life cycle, high-power density, and environmental friendliness. They serve as a bridge for the energy-power difference between a traditional capacitor and batteries/fuel cells. Selection of the ideal electrode material for a particular application is a critical parameter that affects the efficiency of supercapacitor devices. Transition-metal sulfides exhibit multiple oxidation states and display outstanding supercapacitance performance. Metal sulfides are comparatively superior than metal oxides because of their better conductivity, higher electrochemical activity, and eminent thermal and mechanical stability. A comprehensive summary of the zinc sulfide (ZnS)-based nanomaterials as supercapacitor electrodes is on view. With a band gap of 3.5−3.8 eV, ZnS is one of the first discovered II−VI semiconductors. ZnS has been revealed as a sustainable and promising supercapacitance electrode material owing to its facile synthesis and magnificent electrochemical performance. This review has covered the recent research and development of ZnS nanostructures for supercapacitor electrodes. Additionally, synthesis of ZnS nanostructures and influencing parameters, selection of composite materials, and their design have been summarized for highly efficient supercapacitor devices. As far as our knowledge, this review is the first holistic description of ZnS-based supercapacitor electrodes and devices from basics to recent advancements.

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Section: Zns-based Electrodesmentioning

confidence: 99%

Section: Zns-based Electrodesmentioning

confidence: 99%

Section: Zns-based Electrodesmentioning

confidence: 99%

Section: Zns-based Electrodesmentioning

confidence: 99%

See 2 more Smart Citations

Review and Outlook of Zinc Sulfide Nanostructures for Supercapacitors

Saleem,

Khalid,

Malik

et al. 2024

Energy Fuels

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“…Cobalt sulfides, in particular, are relatively simple to synthesize and exhibit comparable catalytic activity to that of noble metal-based materials . Previous studies have demonstrated that the hollow Co 4p orbital of cobalt-based materials is favorable for connecting with the electrons of oxygen (O) 2p orbital in the NO bond. − When an electric field is applied, the electrons excited from Co 3d orbitals to Co 4p orbitals can be injected into the corresponding O 2p orbitals, thereby consuming the reactants. Nevertheless, the function of sulfur in cobalt-based sulfides has not been thoroughly investigated.…”

Section: Introductionmentioning

confidence: 99%

Electroreduction from Nitrite to Ammonia over Cobalt Sulfide Nanorods on Nickel

Li,

Liu

et al. 2024

ACS Appl. Nano Mater.

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Electrochemical nitrite reduction reaction (NO 2 RR) can meet the need to remove nitrite (NO 2 − ) pollutants and provide a sustainable way to produce ammonia (NH 3 ). However, the conversion process from NO 2 − to NH 3 is a complex multistep process involving six-electron transfer, posing a significant challenge for designing efficient catalysts for the NO 2 RR. Here, a series of cobaltbased sulfide (Co x S y ) nanorods (NRs) anchored on nickel foam (NF) with varying sulfur contents (CoS 1.035 NRs/NF, CoS 2 NRs/NF, Co 3 S 4 NRs/NF, and CoS 1.097 NRs/NF) were synthesized through phase-controlled synthesis. The optimal cobalt-based sulfide nanorods (CoS 2 NRs/NF) exhibit superior performance in the NO 2 RR, with an extremely high NO 2 − conversion rate (97.8%), Faradaic efficiency (97.9%), and NH 3 selectivity (98.7%). These results surpass those of previously reported NO 2 RR catalysts. Controlled experiments confirm that for the different cobalt sulfide phases, the higher the sulfur content, the more active hydrogen produced, which is more conducive to the electroreduction from NO 2 − to NH 3 . This research presents novel insight into the rational design of NO 2 RR catalysts.

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Electrochemical Investigation of ZnS/NiO Nanocomposite based Symmetric Supercapattery

Saleem,

Khalid,

Nazir

et al. 2024

ChemistrySelect

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Supercapattery is an ideal energy storage device combining the features of supercapacitors and batteries, offers a high‐energy density as well as high‐power density with extended operational lifespan. In this work, zinc sulfide (ZnS) and zinc sulfide/nickel oxide (ZnS/NiO) nanocomposite was synthesized via chemical coprecipitation method and characterized using state‐of‐the‐art analytical tools. The ZnS/NiO electrode exhibited remarkable electrochemical performance as an electrode material than pure ZnS. The ZnS/NiO nanocomposite exhibited high crystallinity, and spherical nanoparticles with an average grain size of 20–40 nm having a homogeneous dispersion. The ZnS/NiO electrode exhibited an ultrahigh specific capacity of 1803.87 Cg−1 at a relatively low scan rate of 10 mVs−1 in a 1 M KOH solution from cyclic voltammetry and 393 Cg−1 at 16 Ag−1 from charge discharge measurements, and it showed exceptional cycling stability (98 % capacity retention after 1000 cycles). Furthermore, the ZnS/NiO symmetric supercapattery device exhibited 44.43 Fg−1 specific capacitance, 5.52 Wh kg−1 energy density, and 1600 Wkg−1 power density at current density of 0.8 Ag−1 in 1 M KOH solution from galvanostatic charge discharge. After 3000 cycles, the ZnS/NiO nanomaterial demonstrated promising cyclic stability of 95 %. The ZnS/NiO supercapattery nanocomposite might be considered as a potential hybrid electrode material for the future development of electrochemical energy storage devices.

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ZnS-Co3S4 nanoscrubber synthesized by hydrothermal route for pseudo-supercapacitors

Cited by 4 publications

References 5 publications

Review and Outlook of Zinc Sulfide Nanostructures for Supercapacitors

Review and Outlook of Zinc Sulfide Nanostructures for Supercapacitors

Electroreduction from Nitrite to Ammonia over Cobalt Sulfide Nanorods on Nickel

Electrochemical Investigation of ZnS/NiO Nanocomposite based Symmetric Supercapattery

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