Hydrothermal Synthesis of NiCo2O4/CoMoO4 Nanocomposite as a High‐Performance Electrode Material for Hybrid Supercapacitors

Guo, Wei; Wu, Yue; Tian, Yamei; Lian, Xiaojuan; Li, Jiyang; Wang, Shuang

doi:10.1002/celc.201901250

Cited by 15 publications

(3 citation statements)

References 41 publications

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“…20-0781), with a preferential growth orientation along the (311) plane for the hydrothermally synthesized NiCo 2 O 4 [ 23 ]. No discernible changes in crystal structure or phase were observed with varying annealing temperatures [ 24 ].…”

Section: Resultsmentioning

confidence: 99%

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Effect of Annealing Temperature on the Structural and Electrochemical Properties of Hydrothermally Synthesized NiCo2O4 Electrodes

Lee,

Cha,

Park

et al. 2023

Nanomaterials

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In this study, a porous Ni-foam support was employed to enhance the capacitance of nickel cobaltite (NiCo2O4) electrodes designed for supercapacitors. The hydrothermal synthesis method was employed to grow NiCo2O4 as an active material on Ni-foam. The NiCo2O4 sample derived from hydrothermal synthesis underwent subsequent post-heat treatment at temperatures of 250 °C, 300 °C, and 350 °C. Thermogravimetric analysis of the NiCo2O4 showed that weight loss due to water evaporation occurs after 100 °C and enters the stabilization phase at temperatures above 400 °C. The XRD pattern indicated that NiCo2O4 grew into a spinel structure, and the TEM results demonstrated that the diffraction spots (DSs) on the (111) plane of the sample annealed at 350 °C were more pronounced than those of other samples. The specific capacitance of the NiCo2O4 electrodes exhibited a decrease with increasing current density across all samples, irrespective of the annealing temperature. The electrode annealed at 350 °C recorded the highest specific capacitance value. However, the capacity retention rate of the NiCo2O4 electrode revealed a deteriorating trend, declining to 88% at 250 °C, 75% at 300 °C, and 63% at 350 °C, as the annealing temperature increased.

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Section: Resultsmentioning

confidence: 99%

“…(311) plane for the hydrothermally synthesized NiCo2O4 [23]. No discernible change crystal structure or phase were observed with varying annealing temperatures [24]. The full width at half maximum (FWHM) of the primary diffraction peak decrea to 1.152 at 250 °C, 0.768 at 300 °C, and 0.288 at 350 °C.…”

Section: Structural Properties Of Nico2o4 Active Materialsmentioning

confidence: 95%

Effect of Annealing Temperature on the Structural and Electrochemical Properties of Hydrothermally Synthesized NiCo2O4 Electrodes

Lee,

Cha,

Park

et al. 2023

Nanomaterials

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“…In recent years, supercapacitors (SCs) had shown great application potential in many fields. But the disadvantage of low energy density made them not suitable for commercial applications [1][2][3][4]. It was well known that electrode materials directly affected the electrochemical performance of supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

MOF-derived ZnCo₂O₄@NiCo₂S₄@PPy core–shell nanosheets on Ni foam for high-performance supercapacitors

Zhu

Wang²,

Zhang³

et al. 2021

Nanotechnology

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The ZnCo2O4@NiCo2S4@PPy core–shell nanosheets material is prepared by directly growing leaf-like ZnCo2O4 nanosheets derived from the metal-organic framework (MOF) on Ni foam (NiF) via chemical bath deposition and annealing methods and then combining with NiCo2S4 and PPy via electrodeposition methods. The special core–shell structure formed by MOF-derived ZnCo2O4, NiCo2S4 and PPy creates a bi-interface, which could significantly promote the contact between electrode and electrolyte, provide more active sites and accelerate electron/ion transfer. And the combination of these three materials also produces a strong synergistic effect, which could further improve the capacitive performance of the electrode. Therefore, the ZnCo2O4@NiCo2S4@PPy/NiF electrode exhibits the maximum areal capacitance (3.75 F cm−2) and specific capacitance (2507.0 F g−1) at 1 mA cm−2 and 0.5 A g−1, respectively. Moreover, its capacitance retention rate is still 83.2% after 5000 cycles. In addition, a coin-type hybrid supercapacitor is assembled and displays a high energy density of 44.15 Wh kg−1 and good cycling performance.

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Rational Construction of Core‐Shell Ni−Mn−Co−S@Co(OH)₂ Nanoarrays toward High‐Performance Hybrid Supercapacitors

2020

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Rational construction of electrode materials with exclusive structures and compositions are highly attractive for improving the electrochemical properties of supercapacitors (SCs). In the present study, we demonstrate the construction of unique core–shell Ni−Mn−Co−S@Co(OH)2 nanoarrays on nickel foam (denoted as NMCS@COH/NF) as an attractive battery‐type electrode material for SCs through the hydrothermal and electrodeposition strategies, in which the Ni−Mn−Co−S nanowires are well wrapped in the Co(OH)2 shells. Benefiting from the attractive structural properties, the NMCS@COH/NF electrode exhibits considerable electrochemical properties in the aspects of reasonable rate performance (80.3 % up to 24 A g−1), long‐term cyclability (retention rate of 93.3 % undergoing 10 000 cycles), and exceptional capacity (284.85 mAh g−1 at 2 A g−1). Subsequently, the NMCS@COH electrode is assembled into a hybrid supercapacitor, which delivers a good energy density of 51.1 Wh kg−1 at 751.47 W kg−1 and a maximum power density of 18411.76 W kg−1 at 31.3 Wh kg−1. This work provides a straightforward route to rational construction of the electrode materials with promising structural and electrochemical properties for SC applications.

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Hydrothermal Synthesis of NiCo₂O₄/CoMoO₄ Nanocomposite as a High‐Performance Electrode Material for Hybrid Supercapacitors

Cited by 15 publications

References 41 publications

Effect of Annealing Temperature on the Structural and Electrochemical Properties of Hydrothermally Synthesized NiCo2O4 Electrodes

Effect of Annealing Temperature on the Structural and Electrochemical Properties of Hydrothermally Synthesized NiCo2O4 Electrodes

MOF-derived ZnCo₂O₄@NiCo₂S₄@PPy core–shell nanosheets on Ni foam for high-performance supercapacitors

Rational Construction of Core‐Shell Ni−Mn−Co−S@Co(OH)₂ Nanoarrays toward High‐Performance Hybrid Supercapacitors

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Hydrothermal Synthesis of NiCo2O4/CoMoO4 Nanocomposite as a High‐Performance Electrode Material for Hybrid Supercapacitors

Cited by 15 publications

References 41 publications

Effect of Annealing Temperature on the Structural and Electrochemical Properties of Hydrothermally Synthesized NiCo2O4 Electrodes

Effect of Annealing Temperature on the Structural and Electrochemical Properties of Hydrothermally Synthesized NiCo2O4 Electrodes

MOF-derived ZnCo2O4@NiCo2S4@PPy core–shell nanosheets on Ni foam for high-performance supercapacitors

Rational Construction of Core‐Shell Ni−Mn−Co−S@Co(OH)2 Nanoarrays toward High‐Performance Hybrid Supercapacitors

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Product

Resources

About

Hydrothermal Synthesis of NiCo₂O₄/CoMoO₄ Nanocomposite as a High‐Performance Electrode Material for Hybrid Supercapacitors

MOF-derived ZnCo₂O₄@NiCo₂S₄@PPy core–shell nanosheets on Ni foam for high-performance supercapacitors

Rational Construction of Core‐Shell Ni−Mn−Co−S@Co(OH)₂ Nanoarrays toward High‐Performance Hybrid Supercapacitors