Porous chopsticks-like FeCo2O4 by the hydrothermal method for high-performance asymmetric supercapacitors

Huang, Tsung-Chuan; Qiu, Zehai; Zhang, Hu; Zhang, Zhusen

doi:10.1016/j.est.2021.103898

Cited by 18 publications

(3 citation statements)

References 24 publications

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“…The CuMn 2 O 4 NSAs electrode delivered an excellent specific capacity, outstanding rate capability (84.1%), and good cycling life span. It is worth mentioning that the delivered higher specific capacity value from the hydrothermally fabricated battery-type CuMn 2 O 4 NSA electrode exhibited improved electrochemical performance that was analogous to the performances of the previously reported battery-type binary metal oxide electrodes such as the hydrothermally prepared NiCo 2 O 4 electrode (Q SC = 34.02 mA h g −1 at 1 A g −1 and cycling life of 78.30% over 6000 cycles) [ 42 ], hydrothermally developed CuCo 2 O 4 electrode (Q SC = 84.22 mA h g −1 at 1 A g −1 and cycling life of 71.80% over 5000 cycles) [ 43 ], microwave-assisted NiMn 2 O 4 electrode (Q SC = 138.83 mA h g −1 at 1 A g −1 and cycling life of 85.80% over 6000 cycles) [ 44 ], hydrothermally synthesized CuNiO 2 electrode (Q SC = 111.52 mA h g −1 at 2 A g −1 and cycling life of 89.13% over 3000 cycles) [ 45 ], hydrothermally prepared CuCo 2 O 4 electrode (Q SC = 86.37 mA h g −1 at 1 A g −1 and cycling life 93% over 6000 cycles) [ 46 ], and the hydrothermally developed FeCo 2 O 4 electrode (Q SC = 125.56 mA h g −1 at 1 A g −1 and cycling life 93.68% over 4000 cycles) [ 47 ], respectively. Table 1 compares and summarizes the total electrochemical behavior of different electrodes.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Battery-Type CuMn2O4 Nanosheet Arrays on Ni Foam as an Efficient Binder-Free Electrode Material for High-Rate Supercapacitors

et al. 2023

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The development of battery-type electrode materials with hierarchical nanostructures has recently gained considerable attention in high-rate hybrid supercapacitors. For the first time, in the present study novel hierarchical CuMn2O4 nanosheet arrays (NSAs) nanostructures are developed using a one-step hydrothermal route on a nickel foam substrate and utilized as an enhanced battery-type electrode material for supercapacitors without the need of binders or conducting polymer additives. X-ray diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques are used to study the phase, structural, and morphological characteristics of the CuMn2O4 electrode. SEM and TEM studies show that CuMn2O4 exhibits a nanosheet array morphology. According to the electrochemical data, CuMn2O4 NSAs give a Faradic battery-type redox activity that differs from the behavior of carbon-related materials (such as activated carbon, reduced graphene oxide, graphene, etc.). The battery-type CuMn2O4 NSAs electrode showed an excellent specific capacity of 125.56 mA h g−1 at 1 A g−1 with a remarkable rate capability of 84.1%, superb cycling stability of 92.15% over 5000 cycles, good mechanical stability and flexibility, and low internal resistance at the interface of electrode and electrolyte. Due to their excellent electrochemical properties, high-performance CuMn2O4 NSAs-like structures are prospective battery-type electrodes for high-rate supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Battery-Type CuMn2O4 Nanosheet Arrays on Ni Foam as an Efficient Binder-Free Electrode Material for High-Rate Supercapacitors

et al. 2023

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“…In addition, the synthesis of active materials without any binders and conductive additives is the most prospective approach to realize the high properties of CCEs. 42,43 The hydrothermal method 44,45 is widely concerned because of its simple operation, large production scale, and high costperformance features. Furthermore, the morphologies of nanostructures can also be effectively adjusted by changing some process parameters such as reaction time and growth temperature.…”

Section: D C Amentioning

confidence: 99%

“…The combination of CFs and 3D flower-like Ag is an available way to improve the properties of electrodes, such as conductivity and stability, and increases the interaction capabilities between electrolyte ions and the bulk of electrodes. In addition, the synthesis of active materials without any binders and conductive additives is the most prospective approach to realize the high properties of CCEs. , The hydrothermal method , is widely concerned because of its simple operation, large production scale, and high cost-performance features. Furthermore, the morphologies of nanostructures can also be effectively adjusted by changing some process parameters such as reaction time and growth temperature.…”

Section: Introductionmentioning

confidence: 99%

Controllable 3D Flower-Like Ag-CF Electrodes as Flexible Marine Electric Field Sensors with High Stability

et al. 2023

Inorg. Chem.

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Construction of three-dimensional (3D) flower-like nanostructures with controlled morphologies has emerged as an attractive tool by scientists in the marine electric field sensor research field due to their peculiar structural features. Herein, novel 3D flower-like Ag-CF capacitive composite electrodes have been created by an eco-friendly water-bath strategy via AgNO3 as a sliver source and subsequently compounded with carbon fibers (CFs) pretreated by thermal oxidation. A series of electrode samples with various morphologies obtained by modulating different reaction times and temperatures bring about the dominant formation mechanism of these nanostructures and the influence behavior on the CF electrode in detail. Especially, the 3D flower-like Ag-CF electrode shows a large surface area acquired under the conditions of 80 °C and 15 min, which can provide more electroactive sites in electrochemical analysis and exhibit a maximum areal specific capacitance of 619.75 mF·cm–2 at a scanning speed of 10 mV·s–1. This is mainly due to the synergistic behavior of the unique 3D flower-like morphology and the large specific surface area of CFs. Furthermore, a cylinder-shaped Ag-CF sensor is designed, which delivers a superior potential difference of 33.08 μV, a potential difference drift of 18.62 μV/24 h for 30 days, and a self-noise of 0.92 nV/rt (Hz)@1 Hz. In this work, the intriguing synthesis strategy can be a promising facile approach to manufacture the controllable 3D flower-like Ag-CF electrode for electric field sensor applications.

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Advanced nickel-based composite materials for supercapacitor electrodes

Li,

Dong,

Chen

et al. 2024

Ionics

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Porous chopsticks-like FeCo2O4 by the hydrothermal method for high-performance asymmetric supercapacitors

Cited by 18 publications

References 24 publications

Facile Synthesis of Battery-Type CuMn2O4 Nanosheet Arrays on Ni Foam as an Efficient Binder-Free Electrode Material for High-Rate Supercapacitors

Facile Synthesis of Battery-Type CuMn2O4 Nanosheet Arrays on Ni Foam as an Efficient Binder-Free Electrode Material for High-Rate Supercapacitors

Controllable 3D Flower-Like Ag-CF Electrodes as Flexible Marine Electric Field Sensors with High Stability

Advanced nickel-based composite materials for supercapacitor electrodes

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