A facile method to synthesize CoV<sub>2</sub>O<sub>6</sub> as a high-performance supercapacitor cathode

He, Xinrui; Jiang, Jing; Tian, Hanqing; Niu, Yi; Li, Zhipeng; Hu, Yalin; Fan, Jie; Wang, Chao

doi:10.1039/c8ra10041a

Cited by 23 publications

(4 citation statements)

References 34 publications

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“…Meanwhile, the current value ( i ) of the peak becomes large with an increasing sweep rate (ν). A power-law equation ( i = a ν b ) between the peak current and sweep rate is used for studying the difference in kinetics. ,,, By means of plotting log( i ) against log(ν), it can be equivalent to the relationship: log( i ) = log( a )+ b log(ν), where i and ν are acknowledged from the experimental tests and a and b are determined by the fitting method. Generally, the b value close to 1 corresponds to the capacitive-controlled electrochemical behavior, also named surface Faradic redox reaction, whereas b close to 0.5 stands for a diffusion-controlled process.…”

Section: Resultsmentioning

confidence: 99%

Sulfur-Doped TiO₂ Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Zhang

Tang

et al. 2019

ACS Appl. Mater. Interfaces

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Well-tailored sulfur-doped anatase titanium dioxide nanoparticles anchored on a large-area carbon sheet are designed, where the in situ sulfur-doped titanium dioxide directly comes from titanium oxysulfate and the large-area carbon sheet is derived from glucose. When applied as an anode material for sodium-ion batteries, it exhibits an excellent electrochemical performance including a high capacity [256.4 mA h g–1 at 2 C (1 C = 335 mA h g–1) after 500 cycles] and a remarkable rate of cycling stability (100.5 mA h g–1 at 30 C after 500 cycles). These outstanding sodium storage behaviors are ascribed to the nanosized particles (about 8–12 nm), good electronic conductivity promoted by the incorporation of carbon sheet and sulfur, as well as the unique chemical bond based on the electrostatic interaction.

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Section: Resultsmentioning

confidence: 99%

Sulfur-Doped TiO₂ Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Zhang

Tang

et al. 2019

ACS Appl. Mater. Interfaces

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“…For example, quasi-cuboidal CoV 2 O 6 , Co 3 V 2 O 8 nanoplates, and spongelike CoV 2 O 6 have been reported as electrode materials for SCs, which exhibited a specific capacitance of 223∼739 F g –1 at 1 A g –1 and a cycle stability after 2000∼20,000 cycles without a significant decline. Nevertheless, the specific capacitance and long cycle performance of cobalt-based vanadate remain to be improved.…”

Section: Introductionmentioning

confidence: 99%

Toward Enhanced Electrochemical Performance by Investigation of the Electrochemical Reconstruction Mechanism in Co₂V₂O₇ Hexagonal Nanosheets for Hybrid Supercapacitors

Wang

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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As for hybrid supercapacitors, it is important to enhance the long cycling performance and high specific capacitance. In this paper, cobalt vanadate (Co 2 V 2 O 7 ) hexagonal nanosheets on nickel foam are manufactured by a facile hydrothermal method and then transformed into numerous smaller size interconnected hierarchical nanosheets without any shape change via electrochemical reconstruction. Benefiting from the favorable architecture of hierarchical nanosheets via electrochemical reconstruction, the Co 2 V 2 O 7 hexagonal nanosheet electrode exhibits a remarkable long cycling performance with 272% specific capacitance retention after 100,000 cycles at a current density of 5 A g −1 and then displays an increasing specific capacitance of 1834 F g −1 (tested at 1 A g −1 ). Furthermore, an aqueous hybrid supercapacitor device based on the Co 2 V 2 O 7 hexagonal nanosheet electrode exhibits a high energy density of 35.2 Wh kg −1 at a power density of 1.01 kW kg −1 and an excellent cyclic stability with 71.4% capacitance retention after 10,000 cycles at 5 A g −1 . These results offer a practicable pathway for enhancing the electrochemical properties of other metal oxides through electrochemical reconstruction.

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“…In order to overcome the above‐mentioned concerns for preparing nanostructured anode materials, different techniques have been followed such as ball‐milling, hydro/solvothermal, sol‐gel, co‐precipitation, and chemical vapor deposition [39–42] . The solvothermal technique is considered to be one of the best and easiest techniques to produce nanomaterials, with a higher order of homogeneity, high surface area, and porosity.…”

Section: Introductionmentioning

confidence: 99%

“…[35][36][37][38] In order to overcome the above-mentioned concerns for preparing nanostructured anode materials, different techniques have been followed such as ball-milling, hydro/solvothermal, sol-gel, co-precipitation, and chemical vapor deposition. [39][40][41][42] The solvothermal technique is considered to be one of the best and easiest techniques to produce nanomaterials, with a higher order of homogeneity, high surface area, and porosity. One material produced with this method is the CoV 2 O 6 compound, which has been reported as a negative electrode material for rechargeable lithium-ion energy systems.…”

Section: Introductionmentioning

confidence: 99%

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

Nanthagopal

Santhoshkumar

et al. 2022

ChemElectroChem

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Currently available graphitic‐based anodes for lithium‐ion storage do not meet the present‐day energy requirements. Concerning the upcoming energy demands, it is necessary to discover high‐performance anode materials that are suitable for lithium‐ion energy storage systems. Herein, a CoV2O6 (cobalt vanadium oxide, cobalt vanadate denoted as CV) anode material using a simple solvothermal technique is synthesized. Furthermore, the effects of modifying the molar concentration of the precursor materials are investigated. Interestingly, there is no change in the crystal structure, but there is a morphological evolution in the materials. Due to the morphological variations, the electrochemical performances vary significantly. Among the synthesized materials, the CV‐2 compound performs the best, exhibiting excellent performance for lithium‐ion batteries as an anode. At the end of 500 cycles, the material delivers a specific discharge capacity of 391.03 mAh g−1 with a current density of 500 mA g−1.

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A facile method to synthesize CoV₂O₆ as a high-performance supercapacitor cathode

Abstract: A facile chemical co-precipitation process to synthesize CoV2O6, which exhibits high capacity and cycling stability (83.3% after 20 000 cycles).

Cited by 23 publications

References 34 publications

Sulfur-Doped TiO₂ Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Sulfur-Doped TiO₂ Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Toward Enhanced Electrochemical Performance by Investigation of the Electrochemical Reconstruction Mechanism in Co₂V₂O₇ Hexagonal Nanosheets for Hybrid Supercapacitors

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

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A facile method to synthesize CoV2O6 as a high-performance supercapacitor cathode

Abstract: A facile chemical co-precipitation process to synthesize CoV2O6, which exhibits high capacity and cycling stability (83.3% after 20 000 cycles).

Cited by 23 publications

References 34 publications

Sulfur-Doped TiO2 Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Sulfur-Doped TiO2 Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Toward Enhanced Electrochemical Performance by Investigation of the Electrochemical Reconstruction Mechanism in Co2V2O7 Hexagonal Nanosheets for Hybrid Supercapacitors

Morphological Perspective on Energy Storage Behavior of Cobalt Vanadium Oxide

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Product

Resources

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A facile method to synthesize CoV₂O₆ as a high-performance supercapacitor cathode

Sulfur-Doped TiO₂ Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Sulfur-Doped TiO₂ Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Toward Enhanced Electrochemical Performance by Investigation of the Electrochemical Reconstruction Mechanism in Co₂V₂O₇ Hexagonal Nanosheets for Hybrid Supercapacitors