Redox electrode materials for supercapatteries

Yu, Lian; Chen, George

doi:10.1016/j.jpowsour.2016.04.095

Cited by 213 publications

(120 citation statements)

References 49 publications

(115 reference statements)

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“…However, wide commercial usage of supercapacitors are limited owing to high production cost and a low energy density values compared to existing rechargeable batteries. Thus, current researchers are focusing on fabricating devices with active electrode materials having combined characteristics of capacitive and battery applications with the aid of suitable electrolyte to form “supercapattery” (supercapacitor+battery) with superior energy and power densities, that may eradicate the existing problem of energy crisis satisfactorily …”

Section: Introductionmentioning

confidence: 99%

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Majumdar¹,

2019

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Vanadium pentoxide (V 2 O 5 ) is renowned among the highly efficient supercapacitor electrode-materials for high power and energy densities, excellent specific capacitance, prolonged cycle lives, variable oxidation states of V, reversible nature of interconversions, theoretical importance, etc. Various synthetic methodologies and morphologies, formation of composites, and doping for tuning properties are the additional causes of interest. Different synthetic techniques like sol-gel, solvothermal, electro-deposition, electro-spinning, atomic layer deposition, etc. are employed to prepare V 2 O 5 -based electrode materials with merits and demerits. High rate of material agglomeration and poor conductivity limit its usage in pristine morphology. Accordingly, the impact on charge storage behavior of V 2 O 5 on blending with various carbon-based systems has been explored for materials like activated carbons, conducting polymers, carbon nanotubes and functionalized graphene systems as binary/ternary composites. The aim has been to optimize the key factors such as reduced nanostructure lumping, minimal interfacial resistance and ultrafast charge diffusion across hollow porous structures which may eventually lead to the theoretically expected high specific capacitance (> 1000 F g À 1 ). In this review, we have discussed on the recent progress in the research of V 2 O 5 -based materials and highlighted on the correlation between morphology and electrochemical performances. In the course, we have attempted to delineate the advantage-disadvantages of different composite morphologies that may help to outline the present status and future aspects of these materials that the authors believe will be of first-hand assistance especially to the beginners in the field of research.

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Section: Introductionmentioning

confidence: 99%

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Majumdar¹,

2019

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“…The materials used are carbon-based active materials with high specific surface area (SSA), good electronic conductivity, good stability and low specific capacitance [6]. In pseudocapacitive or Faradaic capacitors, the charge storage mechanism is based on fast reversible redox reactions such as in metal oxides (MOs), metal hydroxides (MOHs) and conducting polymers (CPs) [8,9].…”

Section: Introductionmentioning

confidence: 99%

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

et al. 2019

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In this work, porous carbon-vanadium oxynitride (C-V 2 NO) nanostructures were obtained at different nitridation temperature of 700, 800 and 900 • C using a thermal decomposition process. The X-ray diffraction (XRD) pattern of all the nanomaterials showed a C-V 2 NO single-phase cubic structure. The C-V 2 NO obtained at 700 • C had a low surface area (91.6 m 2 g −1 ), a moderate degree of graphitization, and a broader pore size distribution. The C-V 2 NO obtained at 800 • C displayed an interconnected network with higher surface area (121.6 m 2 g −1 ) and a narrower pore size distribution. In contrast, at 900 • C, the C-V 2 NO displayed a disintegrated network and a decrease in the surface area (113 m 2 g −1 ). All the synthesized C-V 2 NO yielded mesoporous oxynitride nanostructures which were evaluated in three-electrode configuration using 6 M KOH aqueous electrolyte as a function of temperature. The C-V 2 NO@800 • C electrode gave the highest electrochemical performance as compared to its counterparts due to its superior properties. These results indicate that the nitridation temperature not only influences the morphology, structure and surface area of the C-V 2 NO but also their electrochemical performance. Additionally, a symmetric device fabricated from the C-V 2 NO@800 • C displayed specific energy and power of 38 W h kg −1 and 764 W kg −1 , respectively, at 1 A g −1 in a wide operating voltage of 1.8 V. In terms of stability, it achieved 84.7% as capacity retention up to 10,000 cycles which was confirmed through the floating/aging measurement for up to 100 h at 10 A g −1 . This symmetric capacitor is promising for practical applications due to the rapid and easy preparation of the carbon-vanadium oxynitride materials.

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“…[1][2][3] Given the high production costs and environmental hazards of conventional energy storage technologies, researchers have focused on developing novel energy materials and optimising their performance in electronic devices. [4][5][6][7][8] In particular, interest has grown in high-Z ns 2 cations with an electronic conguration of [Xe]6S 2 5p 0 . 9,10 Among these main group cations, bismuth has attracted considerable attention because of its low-toxicity and structural-diversity.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and characterization of Bi₁₃S₁₈I₂films as a stable supercapacitor electrode material

et al. 2019

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Electrical double layer capacitors (EDLCs) featuring low-cost and solution-processable electrode materials have attracted significant research interest for their green and economical applications in energy harvesting and storage devices. Here, we demonstrate a novel synthetic route for films of an underexplored 3-D hexagonal bismuth chalcohalide, Bi 13 S 18 I 2 , and investigate its potential as the active electrode material in EDLC-type supercapacitors. The synthetic procedure has been optimised and comprises the lowest annealing temperature (150 C) and the shortest processing time (1 h) currently reported. When integrated in a symmetrical EDLC with an aqueous NaClO 4 electrolyte, the Bi 13 S 18 I 2 -based device achieves a remarkable areal capacitance of 210.68 mF cm À2 with 99.7% capacitance retention after 5000 cycles. Both the Bi 13 S 18 I 2 powder and thin-film electrodes have been characterized through XRD, XPS, Raman spectroscopy, and SEM. The superior stability, low-cost, and facile synthesis of Bi 13 S 18 I 2 proves its promising potential for supercapacitor applications.

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Redox electrode materials for supercapatteries

Cited by 213 publications

References 49 publications

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

Facile synthesis and characterization of Bi₁₃S₁₈I₂films as a stable supercapacitor electrode material

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Redox electrode materials for supercapatteries

Cited by 213 publications

References 49 publications

V2O5 and its Carbon‐Based Nanocomposites for Supercapacitor Applications

V2O5 and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

Facile synthesis and characterization of Bi13S18I2films as a stable supercapacitor electrode material

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V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Facile synthesis and characterization of Bi₁₃S₁₈I₂films as a stable supercapacitor electrode material