Construction of hairbrush-like (Ni3S2/NiSe-3:1)/carboxymethylcellulose derived carbon heterostructure as high-performance electrodes for supercapacitors

Zhang, Zhihao; Chen, Wei; Yu, Hao; Lv, Ruitao; Huang, Yong‐Qing; Fu, Min

doi:10.1016/j.carbon.2023.118183

Cited by 28 publications

(2 citation statements)

References 65 publications

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“…The obtained Co(OH) 2 /CC was washed and dried overnight. The electrodeposition reaction of the Co(OH) 2 can be expressed as follows: NO 3 − + 7 H 2 normalO + 8 e − → NH 4 + + 10 OH − Co 2 + + 2 OH − → Co false( OH false) 2 In 20 mL of deionized water, 0.9 mmol Na 3 C 6 H 5 O 7 ·2H 2 O and 0.4 mmol K 3 [Fe(CN) 6 ] were dissolved to produce clear solutions A and B, respectively. After pouring solution A into solution B and stirring vigorously for 3 min, a piece of Co(OH) 2 /CC was placed in the resulting mixed solution and aged at room temperature for 24 h. The final product was washed and dried at 60 °C for 8 h and named Co(OH) 2 /PBA/CC.…”

Section: Methodsmentioning

confidence: 99%

Free-Standing Co(OH)₂/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Jiang,

Yang,

Chen

et al. 2024

ACS Appl. Nano Mater.

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The low energy density of flexible supercapacitors (FSCs) limits their practical applications, which can be improved by enhancing their specific capacitance or potential window. Herein, uniform Co(OH) 2 nanosheets are grown on activated carbon cloth (CC) by electrodeposition, which are subsequently embedded with Prussian blue analogue (PBA) nanocubes by the ion-exchange, obtaining Co(OH) 2 / PBA/CC electrodes. The uniform distribution and tight interfacial contact between Co(OH) 2 and PBA on CC result in low resistance and high specific capacitance (1175.7 mF cm −2 at 1 mA cm −2 ). Notably, the asymmetric FSCs (Co(OH) 2 /PBA/CC//activated carbon/CC) exhibit an ultrawide potential window of 2.1 V and thus yield a high energy density of 0.4 mWh cm −2 at a power density of 1.5 mW cm −2 . In addition, the FSCs exhibit excellent mechanical strength and flexibility with 87.1% capacitance retention after 10,000 cycles. This work can provide inspiration for the development of robust Na-ion FSCs with an ultrawide potential window and high energy density.

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Section: Methodsmentioning

confidence: 99%

Free-Standing Co(OH)₂/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Jiang,

Yang,

Chen

et al. 2024

ACS Appl. Nano Mater.

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“…Nowadays, the burgeoning industrial progress has led to the increasingly conspicuous emergence of environmental issues. − The need for energy conversion and storage technologies has skyrocketed as a result of the rapid development of green energy. − Many novel devices are being investigated for energy storage applications, including but not limited to lithium-ion batteries, , Ca/Al/Zn-ion batteries, ,,, supercapacitors, and so forth. Among them, supercapacitors (SCs) have received a lot of interest as potential future energy storage devices due to impressive specific capacitance, exceptional cycling stability, high power density, cost-effectiveness, and environmental friendliness, showing great promise for renewable energy. − Nevertheless, the rather low energy density of SCs precludes future deployment, and the possibility of addressing this issue directly points to the crucial component of SCselectrode materials. ,, The key lies in how to judiciously design and construct complicated electrodes to overcome the bottleneck of SCs …”

Section: Introductionmentioning

confidence: 99%

Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Li,

Huang

et al. 2024

ACS Appl. Mater. Interfaces

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The rational design and construction of composite electrodes are crucial for overcoming the issues of poor working stability and slow ionic electron mobility of a single component. Nevertheless, it is a big challenge to construct core−shell heterostructures with crystalline/amorphous/crystalline heterointerfaces in straightforward and efficient methods. Here, we have successfully converted a portion of crystalline CoGa 2 O 4 into the amorphous phase by employing a facile sulfidation process (denoted as CoGa 2 O 4 −S), followed by anchoring crystalline NiCo-layered double hydroxide (denoted as NiCo-LDH) nanoarrays onto hexagonal plates and nucleation points of CoGa 2 O 4 −S, synthesizing dual-type hexagonal and flower-like 3D CoGa 2 O 4 −S@NiCo-LDH core−shell heterostructures with crystalline/ amorphous/crystalline heterointerfaces on carbon cloth. Furthermore, we further adjust the Ni/Co ratio in LDH, achieving precise and controllable core−shell heterostructures. Benefiting from the abundant crystalline/amorphous/crystalline heterointerfaces and synergistic effect among various components, the CoGa 2 O 4 −S@Ni 2 Co 1 -LDH electrode exhibits a specific capacity of 247.8 mAh•g −1 at 1 A•g −1 and good rate performance. A CoGa 2 O 4 −S@Ni 2 Co 1 -LDH//AC flexible asymmetric supercapacitor provides an energy density of 58.2 Wh•kg −1 at a power density of 850 W•kg −1 and exhibits an impressive capacitance retention of 105.7% after 10,000 cycles at 10 A•g −1 . Our research provides profound insights into the design of other similar core−shell heterostructures.

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Carbon Dot/Ti₃C₂T_x MXene Hybrid on Carbon Cloth as a Flexible and Binder‐Free Supercapacitor Electrode with Commercial Scale Mass Loading

Ashok,

Krishnapriya,

Saseendran

et al. 2023

Energy Tech

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Flexible and binder‐free carbon dot/titanium carbide (CD/Ti3C2Tx) MXene electrode for supercapacitor is fabricated at commercial scale mass loading. The decline in specific gravimetric capacitance due to high mass loading is compensated by the synergistic enhancement in properties of the prepared CD/ Ti3C2Tx hybrid. The optimized hybrid electrode gives a specific gravimetric capacitance of 373 F/g at a current density of 1 A/g. The symmetric supercapacitor developed using the electrode had a specific gravimetric capacitance of 50 F/g, energy density of 4.4 Wh/kg, and power density of 66.6 W/kg at a current density of 1 A/g. The device retains 90.8% capacitance after 5000 cycles when operated at a current density of 1 A/g. Raman spectroscopy analysis provides an evaluation of the evolution of the electrochemical performance of the hybrid with the CD concentration. The work will open up new avenues in textile‐based supercapacitor technology for wearable electronics applications utilizing environment‐benign techniques.This article is protected by copyright. All rights reserved.

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Construction of hairbrush-like (Ni3S2/NiSe-3:1)/carboxymethylcellulose derived carbon heterostructure as high-performance electrodes for supercapacitors

Cited by 28 publications

References 65 publications

Free-Standing Co(OH)₂/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Free-Standing Co(OH)₂/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Carbon Dot/Ti₃C₂T_x MXene Hybrid on Carbon Cloth as a Flexible and Binder‐Free Supercapacitor Electrode with Commercial Scale Mass Loading

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Construction of hairbrush-like (Ni3S2/NiSe-3:1)/carboxymethylcellulose derived carbon heterostructure as high-performance electrodes for supercapacitors

Cited by 28 publications

References 65 publications

Free-Standing Co(OH)2/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Free-Standing Co(OH)2/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Constructing Hierarchical CoGa2O4–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Carbon Dot/Ti3C2Tx MXene Hybrid on Carbon Cloth as a Flexible and Binder‐Free Supercapacitor Electrode with Commercial Scale Mass Loading

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About

Free-Standing Co(OH)₂/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Free-Standing Co(OH)₂/Prussian Blue Analogue Nanostructured Electrodes for Flexible Na-Ion Supercapacitors with an Ultrawide Potential Window

Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Carbon Dot/Ti₃C₂T_x MXene Hybrid on Carbon Cloth as a Flexible and Binder‐Free Supercapacitor Electrode with Commercial Scale Mass Loading