Construction of manganese-cobalt-sulfide anchored onto rGO/Ni foam with a high capacity for hybrid supercapacitors

Han, Xiaokun; Xuan, Haicheng; Gao, Jinhong; Tao, Liang; Yang, Jing; Xu, Yuekui; Han, Peide; Du, Youwei

doi:10.1016/j.electacta.2018.08.063

Cited by 41 publications

(19 citation statements)

References 57 publications

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“…The elaborated synthetic approach has been discussed in a previously reported research. 28 Similarly, NiMoO 4 nanorods over rGOdecorated Ni foam (rGO−NMO@NF) were manufactured by a facile hydrothermal method mediated by the precursor itself as starting material and precipitating agent. Precisely, 2.5 mmol (0.7425 g) Ni(NO 3 ) 2 •6H 2 O was dissolved in 40 mL of DI water with continuous stirring to form a homogeneous solution and labeled as solution A.…”

Section: Methodssupporting

confidence: 62%

“…The successful rGO coating onto Ni foam was executed via the reduction of a graphene oxide (GO) nanosheet, employing a chemical reduction method. The elaborated synthetic approach has been discussed in a previously reported research . Similarly, NiMoO 4 nanorods over rGO-decorated Ni foam (rGO–NMO@NF) were manufactured by a facile hydrothermal method mediated by the precursor itself as starting material and precipitating agent.…”

Section: Methodsmentioning

confidence: 99%

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Modish Designation of Hollow-Tubular rGO–NiMoO₄@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Acharya

Ojha

Kim

et al. 2021

ACS Appl. Mater. Interfaces

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The scrupulous designation of hollow and porous electroactive materials incorporating prolific redox-active polyphase transition-metal oxide decorated with polyphase transitionmetal sulfide onto rGO (reduced graphene oxide)-supported conductive substrate has never been an easy task due to the very good coordination affair of sulfur toward transition metals. Herein, cost-effective hydrothermal growth followed by a metal−organic framework (MOF)-mediated sulfidation approach is employed to achieve burl-like Ni−Co−S nanomaterial-integrated hollow and porous NiMoO 4 nanotubes onto rGO-coated Ni foam (rGO− NiMoO 4 @Ni−Co−S) as the electrode material for supercapacitors. The open framework of the rGO−Co−MOF template after the etching and sulfidation process not only enables the creation of a tubular structure of NiMoO 4 nanorods but also provides convenient ion−electron pathways to promote rapid faradic reactions for the hybrid composite electrode. Owing to the unique hollow and tubular structure, the as-fabricated rGO−NiMoO 4 @ Ni−Co−S electrode exhibits a high specific capacity of 318 mA h g −1 at 1 A g −1 and remarkable cyclic performance of 88.87% after 10,000 consecutive charge−discharge cycles in an aqueous 2 M KOH electrolyte on a three-electrode configuration. Moreover, the assembled rGO−NiMoO 4 @Ni−Co−S//rGO−MDC (MOF-derived carbon) asymmetric supercapacitor device exhibits a satisfactory energy density of 57.24 W h kg −1 at a power density of 801.8 W kg −1 with an admirable life span of 90.89% after 10,000 repeated cycles.

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Section: Methodssupporting

confidence: 62%

Section: Methodsmentioning

confidence: 99%

Modish Designation of Hollow-Tubular rGO–NiMoO₄@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Acharya

Ojha

Kim

et al. 2021

ACS Appl. Mater. Interfaces

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“…The maximum power density of the device reached 729 W (∼7 kW kg –1 ) when the energy density value was 0.068 Wh (43.5 Wh kg –1 ). The variation of energy density with power density is shown in the Ragone plot of Figure b. − where the symbols refer to the inner meanings.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of the Electrochemical Performance of a Novel Binder-Free Ni₃S₂@Co₃S₄/Mn₃O₄-RGO Heterostructure through Crystallinity and Band Gap Modification for Flexible Supercapacitors

et al. 2021

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A freestanding binder-free novel electrode material, a Ni 3 S 2 @Co 3 S 4 /Mn 3 O 4 -RGO (CSMRGN) composite, was synthesized for flexible solid-state asymmetric supercapacitors (FSSASCs) through a multistep hydrothermal route. The more electronegative sulfur atoms were arranged regularly to form the land-lotus flower-like structure that enhanced the electrical conductivity and reacted with a nickel foam substrate to form Ni 3 S 2 . After the interrogation of Mn 3 O 4 , the crystallinity of the Co 3 S 4 particles increased with decreasing band gap, which resulted in the improvement of electrochemical properties. The flexible CSMRGN electrode exhibited a high specific capacitance of ∼3140 F g −1 at 2 A g −1 . The (TRGO//CSMRGN) FSSASC device demonstrated a high energy density of ∼51.6 Wh kg −1 at a power density of 1400 W kg −1 . The asymmetric device retained ∼43.5 Wh kg −1 (∼84.5%) energy density even at a high power density of 7 kW kg −1 . The capacitive properties and charge transfer resistance of the FSSASC device were calculated at different bending angles. In comparison to the kinetic controlled process, the diffusion-controlled specific capacitance decreased significantly when the bending angle of the device increased. The device retained ∼96 and 83% of initial capacitance after 1000 GCD cycles under normal and 90°b ending conditions, respectively.

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“…All the curves of the NFCS-NS electrode exhibit two noticeable redox peaks at all sweep rates, revealing that the capacity behavior was administrated using the Faradaic redox reaction based on the following equations [Eqs. (5)- (8)]: [48,50,51] Ni 3 S 2 þ3OH À $ Ni 3 S 2 ðOHÞ 3 þ 3e À (5)…”

Section: Resultsmentioning

confidence: 99%

“…All the curves of the NFCS‐NS electrode exhibit two noticeable redox peaks at all sweep rates, revealing that the capacity behavior was administrated using the Faradaic redox reaction based on the following equations [Eqs. (5)–(8)]: [48,50,51]

true {{normalN normali}_{3} normalS}_{2} {+ 3 normalO normalH}^{-} \leftrightarrow {{normalN normali}_{3} normalS}_{2} ({normalO normalH)}_{3} + {3 normale}^{-}

true {normalF normale normalS}_{2} {+ normalO normalH}^{-} \leftrightarrow {normalF normale normalS}_{2} normalO normalH {+ normale}^{-}

true {normalC normalo normalS}_{2} {+ normalO normalH}^{-} \leftrightarrow {normalC normalo normalS}_{2} normalO normalH + {{normalH}_{2} O + normale}^{-}

true {normalC normalo normalS}_{2} normalO normalH {+ normalO normalH}^{-} \leftrightarrow {normalC normalo normalS}_{2} normalO + {{normalH}_{2} O + normale}^{-}

…”

Section: Resultsmentioning

confidence: 99%

One‐Step Synthesis of Porous Ni−Co−Fe−S Nanosheet Arrays as an Efficient Battery‐Type Electrode Material for Hybrid Supercapacitors

Alitabar

Zardkhoshoui

Davarani

2020

Batteries & Supercaps

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Construction of porous nanosheet arrays of transition-metal sulfides (TMSs) holds great potential for energy storage. Herein, a one-step hydrothermal process is employed for the construction of porous Ni 1.43 Fe .5 Co .5 S .97 nanosheet arrays (NFCS-NS) on the nickel foam as a proper positive electrode for hybrid supercapacitor. Owing to the appealing structural features, the NFCS-NS depicts a high capacity of 1156 C g À 1 at 2 A g À 1 , desirable rate capability of 81.1 %, and significant cyclability of 92.9 %. Also, a promising hybrid device (NFCS-NS//AC) based on NFCS-NS and activated carbon (AC) represents a reasonable energy density of 57.3 Wh kg À 1 at 807.04 W kg À 1 and a notable power density of 20000 W kg À 1 at 40 Wh kg À 1. Therefore, our current research can introduce an effective strategy for the fabrication of high-performance electrodes with porous architectures.

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Construction of manganese-cobalt-sulfide anchored onto rGO/Ni foam with a high capacity for hybrid supercapacitors

Cited by 41 publications

References 57 publications

Modish Designation of Hollow-Tubular rGO–NiMoO₄@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Modish Designation of Hollow-Tubular rGO–NiMoO₄@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Enhancement of the Electrochemical Performance of a Novel Binder-Free Ni₃S₂@Co₃S₄/Mn₃O₄-RGO Heterostructure through Crystallinity and Band Gap Modification for Flexible Supercapacitors

One‐Step Synthesis of Porous Ni−Co−Fe−S Nanosheet Arrays as an Efficient Battery‐Type Electrode Material for Hybrid Supercapacitors

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Construction of manganese-cobalt-sulfide anchored onto rGO/Ni foam with a high capacity for hybrid supercapacitors

Cited by 41 publications

References 57 publications

Modish Designation of Hollow-Tubular rGO–NiMoO4@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Modish Designation of Hollow-Tubular rGO–NiMoO4@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Enhancement of the Electrochemical Performance of a Novel Binder-Free Ni3S2@Co3S4/Mn3O4-RGO Heterostructure through Crystallinity and Band Gap Modification for Flexible Supercapacitors

One‐Step Synthesis of Porous Ni−Co−Fe−S Nanosheet Arrays as an Efficient Battery‐Type Electrode Material for Hybrid Supercapacitors

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Product

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Modish Designation of Hollow-Tubular rGO–NiMoO₄@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Modish Designation of Hollow-Tubular rGO–NiMoO₄@Ni–Co–S Hybrid Core–shell Electrodes with Multichannel Superconductive Pathways for High-Performance Asymmetric Supercapacitors

Enhancement of the Electrochemical Performance of a Novel Binder-Free Ni₃S₂@Co₃S₄/Mn₃O₄-RGO Heterostructure through Crystallinity and Band Gap Modification for Flexible Supercapacitors