Nano-sized flexible hollow carbon buffer layer improves capacitance of micro-nano NiS2/C electrode in supercapacitors

Xu, Caiping; Jin, Chao; Liu, Jiaqi; Song, Kaixu; Wang, Xiyue; Gong, Xin

doi:10.1016/j.est.2021.102394

Cited by 6 publications

(8 citation statements)

References 28 publications

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“…The intuitive contrastive cycle rate of 10–50 mV/s within a potential range of −0.2 to +0.2 V has been shown in Figure 7A,B for NiS and NiS/PPCS electrodes. From the CV curves of NiS electrodes, non‐rectangular curves were observed manifesting the presence of purely pseudocapacitive (ie, battery‐type) behavior during the storage of charge 46‐48 . On the other hand, the mixing of potato‐peel‐driven carbon spheres with NiS (ie, NiS/PPCS electrode) resulted in asymmetric (or supercapacitor‐battery type) behavior of the electrode 12 …”

Section: Resultsmentioning

confidence: 99%

“…manifesting the presence of purely pseudocapacitive (ie, battery-type) behavior during the storage of charge. [46][47][48] On the other hand, the mixing of potato-peel-driven carbon spheres with NiS (ie, NiS/PPCS electrode) resulted in asymmetric (or supercapacitor-battery type) behavior of the electrode. 12 The similar symmetry and shapes of the CV curves at different scan rates represented the excellent reaction reversibility of the prepared electrode materials.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

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Nickel sulfide and potato‐peel‐derived carbon spheres composite for high‐performance asymmetric supercapacitor electrodes

Sheoran,

Sharma,

Dawar

et al. 2024

Energy Storage

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In the present work, a novel composite of nickel sulfide (NiS) and potato peel‐derived carbon spheres (NiS/PPCS) with higher specific capacitance and cyclic performance was synthesized as electrode material for supercapacitor applications. The composite was deposited on a graphite rod to be use as an electrode. The electrochemical performance studies using CV, GCD, and EIS revealed that the prepared electrode showed an improved current response and higher specific capacitance than the pristine NiS electrode. The maximum specific capacitance for the NiS/PPCS electrode was found to be 2185 F/g at 0.2 A/g current density. More precisely, it was observed that the NiS/PPCS composite exhibited an excellent retention capacity of 95.04% after 20 000 continuous charge‐discharge cycles, showing its exceptional cyclic performance. The impedance studies revealed that the reaction between the NiS/PPCS electrode and electrolyte was rapid and highly reversible. Based on the findings of the electrochemical performances, NiS/PPCS electrode appears to be a potential candidate for highly efficient and economical asymmetric supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Measurementsmentioning

confidence: 99%

Nickel sulfide and potato‐peel‐derived carbon spheres composite for high‐performance asymmetric supercapacitor electrodes

Sheoran,

Sharma,

Dawar

et al. 2024

Energy Storage

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“…[19][20][21] These materials with multimetallic active sites are demonstrated to promote catalytic properties and selectivity in a variety of chemical transformations. [22][23][24] Conventional synthetic methods using wet impregnation, co-precipitation and combustion have been reported and implemented on commercial scales, whereas, there is difficulty in precisely controlling their elemental composition due to the varied reaction kinetics and redox potentials of different elements. 25 Thus, there is growing interest in seeking advanced nanomaterials with controlled structures and chemical compositions.…”

Section: Prof Zhuo Yin Is a Doctor Of Medicine And Director Of Urinar...mentioning

confidence: 99%

Recent progress on mixed transition metal nanomaterials based on metal–organic frameworks for energy-related applications

Yin

Wang

et al. 2022

J. Mater. Chem. A

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“…NiS 2 , a pyrite structure, has been reported in hybrid supercapacitors with excellent electrochemical ability. 9,10 Xu et al 11 proposed NiS 2 /C particles, exhibiting 1872 F g −1 capacitance at 1 A g −1 . Ghosh et al 12 fabricated carboncoated NiS 2 with a capacitance of 2212 F g −1 at 2 A g −1 .…”

Section: Introductionmentioning

confidence: 99%

“…Among them, nickel sulfides with multiple distinct phases, such as α-NiS, β-NiS, NiS 2 , Ni 3 S 2 , Ni 3 S 4 , Ni 7 S 6 , and Ni 9 S 8 , possess ultrahigh conductivity, Faradic reaction activities, and chemical stability. NiS 2 , a pyrite structure, has been reported in hybrid supercapacitors with excellent electrochemical ability. , Xu et al proposed NiS 2 /C particles, exhibiting 1872 F g –1 capacitance at 1 A g –1 . Ghosh et al fabricated carbon-coated NiS 2 with a capacitance of 2212 F g –1 at 2 A g –1 .…”

Section: Introductionmentioning

confidence: 99%

Tremella-like 2D Nickel–Copper Disulfide with Ultrahigh Capacity and Cyclic Retention for Hybrid Supercapacitors

Liu

2022

ACS Appl. Mater. Interfaces

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disulfides possess unique physical and chemical properties and are widely used in electronic and photoelectric devices. Tuning the composition and optimizing the structure of the disulfides are feasible approaches to designing target sulfides for hybrid supercapacitors. This work synthesizes the tremella-like nanosheet-connected (Cu x Ni 1−x )S 2 via solvothermal and sulfur-vapor vulcanization. The 2D (Cu x Ni 1−x )S 2 electrode performs a high reversible capacity (526.0 mA h g −1 at 1 A g −1 ), decent capacity retention (75.6%) at 10 A g −1 , and prolonged cyclic retention (94.4% over 15,000 cycles), which is higher than that of (Cu x Ni 1−x )O and monometallic sulfides of NiS 2 and CuS. The elevated electrochemical properties of (Cu x Ni 1−x )S 2 are attributed to the optimized composition with increased redox reaction, enlarged lattice distance, abundant active sites, and attractive electronic and ionic conductivity. Also, (Cu x Ni 1−x )S 2 and active carbon (AC) are assembled to form a hybrid supercapacitor (HSC). The (Cu x Ni 1−x )S 2 //AC HSC demonstrates a maximum specific capacitance of 231.0 F g −1 at 1 A g −1 and a high energy density of 82.4 W h kg −1 at a power density of 1.82 kW kg −1 . Outstanding cyclic retentions of 94.9 and 84.5% after 8000 and 10,000 cycles are also obtained. In conclusion, this result suggests a facile routine for preparing a novel 2D layer material of (Cu x Ni 1−x )S 2 with outstanding specific capacity and cycling performance for hybrid supercapacitors.

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Nano-sized flexible hollow carbon buffer layer improves capacitance of micro-nano NiS2/C electrode in supercapacitors

Cited by 6 publications

References 28 publications

Nickel sulfide and potato‐peel‐derived carbon spheres composite for high‐performance asymmetric supercapacitor electrodes

Nickel sulfide and potato‐peel‐derived carbon spheres composite for high‐performance asymmetric supercapacitor electrodes

Recent progress on mixed transition metal nanomaterials based on metal–organic frameworks for energy-related applications

Tremella-like 2D Nickel–Copper Disulfide with Ultrahigh Capacity and Cyclic Retention for Hybrid Supercapacitors

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