Heterostructured Co-NTC@Co<sub>3</sub>S<sub>4</sub> as an anode material for asymmetric pseudocapacitors

Liu, Xinjie; Zhang, Xinlong; Yin, Qingyang; Liu, Rongmei; Liu, Ning; Hu, Jiwen; Shen, Feng-Cui; Zhu, Xiandong

doi:10.1039/d2ce00300g

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…The double peaks at 778.6/794.3 eV and 781.1/796.3 eV are the centers of Co 3+ and Co 2+ , respectively, while the satellite peaks are located at 784.3/800.7 eV, manifesting coexistence of Co 2+ /Co 3+ in the composite electrode. [ 34,35 ] Similarly, for Ni 2 p 3/2 and Ni 2 p 1/2 , multiple peaks locate at 853.5/870.9 eV and 855.9/873.2 eV, which belong to Ni 3+ and Ni 2+ , severally. Furthermore, O1 s spectra (Figure 2e) fit the peaks at 529.5 and 528.9 eV, representing that metal–oxygen bond (M–O) and hydroxyl group (–OH).…”

Section: Resultsmentioning

confidence: 97%

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Liang

Gao

et al. 2023

Energy Tech

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Cobalt‐based sulfide is an excellent electrode material applied to supercapacitors (SCs) because of its good reversibility and abundant nanoforms. However, the feasibility of its practical application is reduced due to lack of stability and some difference with theoretical capacity. Herein, the hierarchical structures of Co3S4 hollow nanotube arrays wrapped with NiCo‐layered double hydroxide nanosheets (Co3S4@NiCo‐LDHs) are successfully fabricated on the nickel foam (NF) as the nonbinder electrode of SCs. Profiting from the synthetic effect of Co3S4 hollow nanotube arrays with effective diffusion channels, and NiCo‐LDH nanosheets with a stable interconnected network, the prepared Co3S4@NiCo‐LDH/NF composite electrode with a unique hierarchical structure attains an amazing areal capacity (7.45 C cm−2 at 2 mA cm−2) and impressive cycle stability (87.7% through 5000 charge and discharge cycles). In addition, the assembled asymmetric supercapacitor (Co3S4@NiCo‐LDH/NF//AC) shows pleasant energy density (0.661 mWh cm−2 under 1.359 mW cm−2). The capacity of the assembled device can still be retained at 92% after 5000 cycles, which verifies the feasibility of the device in practical application.

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Section: Resultsmentioning

confidence: 97%

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Liang

Gao

et al. 2023

Energy Tech

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“…Another prominent feature of the 0D structure can be easily combined with other multidimensional structures, for example, nanosheets and nanotubes. Such hierarchical multidimensional architectures are previously reported to promote the electrochemical activities of the electrodes. − …”

Section: Introductionmentioning

confidence: 95%

Hollow Spherical NiCo₂S₄@N-CNT Composites with High Energy Density for All-Solid-State Supercapacitors

Luo

Lou

et al. 2023

ACS Appl. Energy Mater.

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NiCo2S4@N-CNT composites with multidimensional hierarchical structures are rationally designed and synthesized by a simple two-step hydrothermal strategy, aiming to achieve excellent electrochemical performances for supercapacitor applications. The hollow spherical NiCo2S4 nanoparticles with both zero- and two-dimensional architecture are interconnected by the conductive bridges of nitrogen-doped carbon nanotubes (N-CNTs, 1D). This unique structure can provide a much rougher surface, rich two-phase interface, and porous channels exposed to electrolytes with fast ion diffusions and electron transmissions, as well as effectively relieve the expansion/contractions during charging and discharging. As such, the asymmetric all-solid-state supercapacitor device assembled by NiCo2S4@N-CNTs and activated carbons can provide an energy density high up to 59.37 W h kg–1 at the power density (750 W kg–1). Even if the power density is increased up to 1.5 kW kg–1, it still can achieve the energy density superior to 45.6 W h kg–1. These results can provide the open interesting perspective to design the favorable structure of bimetallic sulfides for supercapacitor applications.

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Intrinsic properties of metal–organic frameworks (MOFs) in supercapacitor applications

Makgopa

Ratsoma

Modibane

2022

Current Opinion in Electrochemistry

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Heterostructured Co-NTC@Co₃S₄ as an anode material for asymmetric pseudocapacitors

Abstract: Herein, a composite structure of ZIF-67@Co-NTC was synthesized and it was partially vulcanized to form layer-like Co3S4 nanosheets to finally successfully synthesize a composite heterostructure of Co-NTC@Co3S4.

Cited by 5 publications

References 46 publications

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Hollow Spherical NiCo₂S₄@N-CNT Composites with High Energy Density for All-Solid-State Supercapacitors

Intrinsic properties of metal–organic frameworks (MOFs) in supercapacitor applications

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Heterostructured Co-NTC@Co3S4 as an anode material for asymmetric pseudocapacitors

Abstract: Herein, a composite structure of ZIF-67@Co-NTC was synthesized and it was partially vulcanized to form layer-like Co3S4 nanosheets to finally successfully synthesize a composite heterostructure of Co-NTC@Co3S4.

Cited by 5 publications

References 46 publications

The Hierarchical Structures of Co3S4 Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

The Hierarchical Structures of Co3S4 Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Hollow Spherical NiCo2S4@N-CNT Composites with High Energy Density for All-Solid-State Supercapacitors

Intrinsic properties of metal–organic frameworks (MOFs) in supercapacitor applications

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Heterostructured Co-NTC@Co₃S₄ as an anode material for asymmetric pseudocapacitors

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

The Hierarchical Structures of Co₃S₄ Hollow Nanotube Arrays Wrapped with NiCo‐Layered Double Hydroxide Nanosheets for High‐Performance Asymmetric Supercapacitors

Hollow Spherical NiCo₂S₄@N-CNT Composites with High Energy Density for All-Solid-State Supercapacitors