NiCo2S4@Co(OH)2 core-shell nanotube arrays in situ grown on Ni foam for high performances asymmetric supercapacitors

Li, Rui; Wang, Senlin; Huang, Zongchuan; Lu, Fengxia; He, Taobin

doi:10.1016/j.jpowsour.2016.02.047

Cited by 362 publications

(129 citation statements)

References 56 publications

Supporting

Mentioning

116

Contrasting

Order By: Relevance

“…Figure b shows the typical Faradaic CV curves of MCS@NCS electrode at different scan rates ranging from 5 to 50 mV s −1 at a potential window of −0.1–0.65 V. The redox peaks are obvious in each curve due to various redox reactions occurred under the scanning voltage, suggesting that the capacitance of the hybrid electrode mainly comes from Faradaic pseudocapacitance related to M‐S, where M represents Mn, Co, and Ni. The electrochemical reactions happened during the charge‐discharge process are listed below:

\begin{array}{c} center & normalM normaln normalC o_{2} S_{4} + normalO H^{-} + H_{2} normalO \leftrightarrow normalM normaln normalS normalO normalH + 2 normalC normalo normalS normalO normalH + 2 e^{-} \\ center & normalN normali normalS + normalO H^{-} \leftrightarrow normalN normali normalS normalO normalH + e^{-} \\ center & normalC normalo normalS + normalO H^{-} \leftrightarrow normalC normalo normalS normalO normalH + e^{-} \\ center & normalC normalo normalS normalO normalH + normalO H^{-} \leftrightarrow normalC normalo normalS normalO + H_{2} normalO + e^{-} \end{array} .

…”

Section: Resultsmentioning

confidence: 99%

“…Core‐shell structure is a promising electrode configuration due to its rich redox reaction sites and sufficient contact area between electrode and electrolyte. The electrochemical performance of the core‐shell hybrid electrode could be enhanced significantly by the synergistic effect of core and shell materials . In this work, with the aim of promoting the electrochemical behavior, a ternary metal sulphide Ni‐Co‐S nanosheet was grown on the surface of MnCo 2 S 4 by a simple electrochemical deposition to form a MnCo 2 S 4 @Ni‐Co‐S (MCS@NCS) core‐shell nanostructure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Double-Layer MnCo₂ S₄ @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

Tang

2018

Phys. Status Solidi A

View full text Add to dashboard Cite

A double‐layer MnCo2S4@Ni‐Co‐S (MCS@NCS) core/shell nanocomposite is successfully deposited on nickel foam using a facile and simple method which includes a hydrothermal treatment and an electrochemical deposition and exhibits excellent electrochemical performance. With the introduction of sulfur via a sulfurization process, the MnCo2S4 nanorods have larger specific surface area compared to the MnCo2O4 nanorods and can serve as porous scaffolds for loading a large amount of additional active materials, facilitating electron transport and ion diffusion. The deposited Ni‐Co‐S nanosheet on MnCo2S4 can further increase the electro‐active surface area and electrical conductivity as well as reinforce the mechanical stability of the whole electrode. Combining both structural and electrochemical advantages, the electrode with MCS@NCS heterostructures has high areal capacitance (10.14 F cm−2 at 1 mA cm−2). An asymmetric supercapacitor with Ni foam‐activated carbon as the negative electrode and Ni foam‐MCS@NCS as the positive electrode is fabricated and shows remarkable high areal capacitance (1.92 F cm−2 at 1 mA cm−2) and good cycling stability (72% capacitance retention after 5000 cycles), demonstrating its great potential as an efficient energy storage device for electronic systems.

show abstract

\begin{array}{c} center & normalM normaln normalC o_{2} S_{4} + normalO H^{-} + H_{2} normalO \leftrightarrow normalM normaln normalS normalO normalH + 2 normalC normalo normalS normalO normalH + 2 e^{-} \\ center & normalN normali normalS + normalO H^{-} \leftrightarrow normalN normali normalS normalO normalH + e^{-} \\ center & normalC normalo normalS + normalO H^{-} \leftrightarrow normalC normalo normalS normalO normalH + e^{-} \\ center & normalC normalo normalS normalO normalH + normalO H^{-} \leftrightarrow normalC normalo normalS normalO + H_{2} normalO + e^{-} \end{array} .

…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Double-Layer MnCo₂ S₄ @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

Tang

2018

Phys. Status Solidi A

View full text Add to dashboard Cite

show abstract

“…The CV curve of the AC is a nearly rectangular shape without redox peaks, which shows classic EDLCs behavior. And the CV curves of NiCo 2 S 4 @NiO electrode shows two pairs of redox peaks in the potential window from − 0.2 to 0.6 V, attributing to the typical pseudocapacitance character4647. In order to obtain the optimal performance of the ASC device, the charge between the positive and the negative electrodes should be balanced following the relationship q + = q − .…”

Section: Resultsmentioning

confidence: 99%

“…The EIS measurements were conducted with a frequency range from 10 −2 Hz to 10 5 Hz and voltage amplitude of 10 mV at open-circuit potential. The areal specific capacitance (C a ) and mass specific capacitance (C m ), energy density (E), and power density (P) were calculated by following equations47:…”

Section: Methodsmentioning

confidence: 99%

Enhanced cycling stability of NiCo2S4@NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors

Huang

Shi

Jiang

et al. 2016

Sci Rep

126

View full text Add to dashboard Cite

As a new class of pseudocapacitive material, metal sulfides possess high electrochemical performance. However, their cycling performance as conventional electrodes is rather poor for practical applications. In this article, we report an original composite electrode based on NiCo2S4@NiO core-shell nanowire arrays (NWAs) with enhanced cycling stability. This three-dimensional electrode also has a high specific capacitance of 12.2 F cm−2 at the current density of 1 mA cm−2 and excellent cycling stability (about 89% retention after 10,000 cycles). Moreover, an all-solid-state asymmetric supercapacitor (ASC) device has been assembled with NiCo2S4@NiO NWAs as the positive electrode and active carbon (AC) as the negative electrode, delivering a high energy density of 30.38 W h kg−1 at 0.288 KW kg−1 and good cycling stability (about 109% retention after 5000 cycles). The results show that NiCo2S4@NiO NWAs are promising for high-performance supercapacitors with stable cycling based on the unique core-shell structure and well-designed combinations.

show abstract

“…[20] Wu et. [26][27][28] Therefore, there is an urgentr equirement for the developmento fasimple and convenient method to prepareb oth positive and negative electrode materials with high specific capacitance. Zeolitic imidazolate framework-67 (ZIF-67) was used as ap recursor to preparen anoporous carbon (NC), and K 0.5 Mn 2 O 4 nanosheets were subsequently grown on the NC surfacet hrough af acile in situ redox process (denoteda sN CMO).…”

Section: Introductionmentioning

confidence: 99%

In Situ Growth of Zeolitic Imidazolate Framework‐67‐derived Nanoporous Carbon@K_0.5Mn₂O₄ for High‐Performance 2.4 V Aqueous Asymmetric Supercapacitors

Wei

Peng

et al. 2018

ChemSusChem

View full text Add to dashboard Cite

Aqueous asymmetric supercapacitors (ASCs) with a wide voltage window can effectively improve energy storage capacity of energy storage devices. Zeolitic imidazolate framework-67 (ZIF-67) was used as a precursor to prepare nanoporous carbon (NC), and K Mn O nanosheets were subsequently grown on the NC surface through a facile in situ redox process (denoted as NCMO). The electrode potential window of NCMO was extended to 1.2 V in a three-electrode system and the value of the potential window was higher than that of most reported manganese oxides. To assemble the asymmetric supercapacitor with a high voltage range, the as-prepared NCMO and NC (with a potential window of -1.2-0 V) were used as the positive and negative electrode, respectively. A 2.4 V NCMO//NC aqueous ASC was constructed and displayed a large energy density of 60 Wh kg at a power density of 1200 W kg and excellent rate performance (41 Wh kg even at a specific power density of 12.3 kW kg ) as well as good cycling stability (92.6 % capacitance retention over 10 000 cycles at 10 A g ). This work provides new opportunities for the development of high voltage ASCs with a high energy density for further practical application.

show abstract

NiCo2S4@Co(OH)2 core-shell nanotube arrays in situ grown on Ni foam for high performances asymmetric supercapacitors

Cited by 362 publications

References 56 publications

Double-Layer MnCo₂ S₄ @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

Double-Layer MnCo₂ S₄ @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

Enhanced cycling stability of NiCo2S4@NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors

In Situ Growth of Zeolitic Imidazolate Framework‐67‐derived Nanoporous Carbon@K_0.5Mn₂O₄ for High‐Performance 2.4 V Aqueous Asymmetric Supercapacitors

Contact Info

Product

Resources

About

NiCo2S4@Co(OH)2 core-shell nanotube arrays in situ grown on Ni foam for high performances asymmetric supercapacitors

Cited by 362 publications

References 56 publications

Double-Layer MnCo2 S4 @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

Double-Layer MnCo2 S4 @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

Enhanced cycling stability of NiCo2S4@NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors

In Situ Growth of Zeolitic Imidazolate Framework‐67‐derived Nanoporous Carbon@K0.5Mn2O4 for High‐Performance 2.4 V Aqueous Asymmetric Supercapacitors

Contact Info

Product

Resources

About

Double-Layer MnCo₂ S₄ @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

Double-Layer MnCo₂ S₄ @Ni-Co-S Core/Shell Nanostructure on Nickel Foam for High-Performance Supercapacitor

In Situ Growth of Zeolitic Imidazolate Framework‐67‐derived Nanoporous Carbon@K_0.5Mn₂O₄ for High‐Performance 2.4 V Aqueous Asymmetric Supercapacitors