Synthesis of polypyrrole nanotubes@nickel-molybdenum sulfide core–shell composites for aqueous high-performance asymmetric supercapacitors

Ye, Yuncheng; Guo, Xin; Ma, Yongjun; Zhao, Qi; Sui, Yan; Song, Jia; Ma, Weijing; Zhang, Pengxue; Qin, Chuanli

doi:10.1016/j.jelechem.2021.115588

Cited by 24 publications

(5 citation statements)

References 69 publications

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“…Therefore, the capacitance does not much declined after continuous charge–discharge cycles. It is also worth mentioning that the capacitance retention of the NMS@S-gC electrode after 5000 cycles is higher/comparable to the previous works based on metal chalcogenides such as Ni-Mo-O-S composites (75% after 3000 cycles), NiCo 2 S 4 /Ni-Co LDHs (56% after 2000 cycles), PPy@NiMoS nanoflakes (84.9% after 2000 cycles), NiCo 2 S 4 nanotubes (77% after 1500 cycles), and PPy@NiCo 2 S 4 (84.4% after 1000 cycles). ,− The inset figure in Figure i presents the impedance plots that show the small series resistance values of 0.6 and 0.59 Ω to the NMS and NMS@S-gC composite, which further boosts the ion diffusion process and reduces the change transfer resistance during the faradaic reaction. In addition, the semicircle loop diameter at a high-frequency area is taken into interpretation when calculating the charge transfer resistance at the electrode–electrolyte interface.…”

Section: Resultssupporting

confidence: 79%

Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo₃S₄) Nanostructures Developed on S-g-C₃N₄ Sheets: Promising Electrode Material for Supercapacitors

Pallavolu

Vallem

Nallapureddy

et al. 2023

ACS Appl. Energy Mater.

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An electrode material composed of bimetallic sulfides on g-C 3 N 4 typically enhances the energy storage capacity of devices due to the merits of each component, but it still suffers from low energy density over long cycles. Although Ni-based bimetallic sulfides have become good electrode materials for supercapacitors, practical applications of these materials are hindered due to unsatisfactory cycling stability. Here, we demonstrate a simple two-step in situ approach to prepare bimetallic sulfide nanobulbs on a sulfur-doped graphitic carbon nitrate matrix for a NiMo 3 S 4 @S-g-C 3 N 4 composite, which is further used for supercapacitor devices. A small amount of sulfur doping to g-C 3 N 4 enhances the conducting channels for electron transportation. An NMS@S-gC nanocomposite clearly shows the formation of small nanobulbs that are formed as silk warm-type hierarchical morphology structures and these were wrapped on the surface of S-gC porous nanosheets. The device made up of these composites exhibited a maximum specific capacitance of 142.4 F g −1 , a high energy density of 41.4 Wh kg −1 , and a power density of 723.5 W kg −1 at a current density of 1 A g −1 . Meanwhile, in a three-electrode device configuration, the working electrode demonstrates a specific capacitance of 934.2 F g −1 at 1 A g −1 , which is 1.6 times greater than that of bare NiMo 3 S 4 . Moreover, the capacitance retention of the device is about 91% even after 5000 cycles at 8 A g −1 . The results obtained in this investigation surpassed most reported metallic sulfides on g-C 3 N 4 . Hence, this work could give a different pathway for the synthesis of electrode materials for energy storage devices.

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Section: Resultssupporting

confidence: 79%

Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo₃S₄) Nanostructures Developed on S-g-C₃N₄ Sheets: Promising Electrode Material for Supercapacitors

Pallavolu

Vallem

Nallapureddy

et al. 2023

ACS Appl. Energy Mater.

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“…Hence, P3MT/NiO/NiS nanocomposites produced the highest specific capacitance at various scan rates and confirmed to behave as better electrode material in supercapacitors. Table 1 represents the Performance comparisons of the present work with investigated electrode materials 53–69 . It is shown that the specific capacitance, energy density, power density, and retention of specific capacitance are observed to be good for the P3MT/NiO/NiS electrode.…”

Section: Resultsmentioning

confidence: 90%

“…Table 1 represents the Performance comparisons of the present work with investigated electrode materials. [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69] It is shown that the specific capacitance, energy density, power density, and retention of specific capacitance are observed to be good for the P3MT/NiO/NiS electrode. This suggests that the P3MT/NiO/NiS electrode is a viable electrode material for applications involving supercapacitors.…”

Section: Cycling Performance Of Synthesized Nanocompositesmentioning

confidence: 99%

Studies on improved stability and electrochemical activity of metal oxides/sulfides‐based polymer nanocomposites for energy storage applications

Xavier

2024

Polymer Engineering & Sci

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Poly (3‐methylthiophene) (P3MT) was modified by nickel oxide (NiO) and nickel sulfide (NiS) nanoparticles to enhance its electrochemical performance. The surface influence, crystalline structure, and electrochemical performance of the P3MT/NiO/NiS material were characterized and compared with that of pristine P3MT. It is found that surface modification can improve the structural stability of P3MT without decreasing its available specific capacitance. The electrochemical properties of synthesized P3MT/NiO/NiS electrode were evaluated using cyclic voltammetry and alternating current impedance techniques in 3 M KOH electrolyte. Specific capacitances of 253, 764, 932, and 1434 F g−1 were obtained for P3MT, P3MT/NiO, P3MT/NiS, and P3MT/NiO/NiS, respectively at 5 A g−1. This improvement is attributed to the synergistic effect of Ni2+ ions in the P3MT/NiO/NiS electrode material. The P3MT/NiO/NiS electrode in KOH has average specific energy and specific power densities of 1032 Wh kg−1 and 6192 W/kg, respectively. Only 2% of the capacitance's initial value is lost after 10,000 cycles. The resulting P3MT/NiO/NiS nanocomposite had very stable and porous layered structures. This work demonstrates that P3MT/NiO/NiS nanomaterials exhibit good structural stability and electrochemical performance, and are good material for supercapacitor applications.Highlights The P3MT/NiO/NiS nanocomposite is fabricated and characterized as supercapacitor electrode. The incorporation of NiO/NiS in the poly (3‐methylthiophene) has improved the electrochemical performance. The P3MT/NiO/NiS electrodes retained 98% of their specific capacitance after 10,000 cycles. The P3MT/NiO/NiS nanocomposite electrode showed specific capacitance of 1434 F g−1 at 5 A g−1. The stability of the nanocomposite was enhanced without altering its morphology and chemical structure.

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“…14,15 In particular, the role of sulfur, with a lower electronegativity than oxygen, demonstrates narrow bandgap and high conductivity for transition metal sulfides. 16,17 The widely known transition metal oxides (TMOs: ZnO, RuO 2 , MnCo 2 O 4 , V 2 O 5 , Fe 3 O 4 ), [18][19][20][21][22] transition metal hydroxides (TMHs: Mn(OH) 2 , Co(OH) 2 , Mo(OH) 2 , Ni(OH) 2 ), [23][24][25][26][27] and transition metal sulfides (TMSs: CuS, MoS 2 , NiS) [28][29][30] are potential materials for electrode design concerning electrochemical energy storage. High redox activities and reversibility make a pseudocapacitive material a promising electrode in supercapacitor design.…”

Section: Introductionmentioning

confidence: 99%

Cavity structured S-NiO with improved energy density for aqueous asymmetric hybrid supercapacitors by CDA mechanism

Patil,

Khalate,

Patil

et al. 2023

Mater. Adv.

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Synthesis of polypyrrole nanotubes@nickel-molybdenum sulfide core–shell composites for aqueous high-performance asymmetric supercapacitors

Cited by 24 publications

References 69 publications

Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo₃S₄) Nanostructures Developed on S-g-C₃N₄ Sheets: Promising Electrode Material for Supercapacitors

Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo₃S₄) Nanostructures Developed on S-g-C₃N₄ Sheets: Promising Electrode Material for Supercapacitors

Studies on improved stability and electrochemical activity of metal oxides/sulfides‐based polymer nanocomposites for energy storage applications

Cavity structured S-NiO with improved energy density for aqueous asymmetric hybrid supercapacitors by CDA mechanism

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Synthesis of polypyrrole nanotubes@nickel-molybdenum sulfide core–shell composites for aqueous high-performance asymmetric supercapacitors

Cited by 24 publications

References 69 publications

Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo3S4) Nanostructures Developed on S-g-C3N4 Sheets: Promising Electrode Material for Supercapacitors

Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo3S4) Nanostructures Developed on S-g-C3N4 Sheets: Promising Electrode Material for Supercapacitors

Studies on improved stability and electrochemical activity of metal oxides/sulfides‐based polymer nanocomposites for energy storage applications

Cavity structured S-NiO with improved energy density for aqueous asymmetric hybrid supercapacitors by CDA mechanism

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Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo₃S₄) Nanostructures Developed on S-g-C₃N₄ Sheets: Promising Electrode Material for Supercapacitors

Self-Assembled Hierarchical Silkworm-Type Bimetallic Sulfide (NiMo₃S₄) Nanostructures Developed on S-g-C₃N₄ Sheets: Promising Electrode Material for Supercapacitors