V2O5 nanowires-graphene composite as an outstanding electrode material for high electrochemical performance and long-cycle-life supercapacitor

Ahirrao, Dinesh J.; Mohanapriya, K.; Jha, Neetu

doi:10.1016/j.materresbull.2018.08.028

Cited by 51 publications

(10 citation statements)

References 60 publications

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“…The samples obtained with strong acids, HCl, and H 2 SO 4 , presents peaks at 529.8, 531.0, and 532.5 eV after deconvolution corresponding to VOV, CO, and VOH, respectively. [ 22 ] The CO peak might originate from CO 2 , and VOH is from the crystal water in the product and from moisture. For the V 3 O 7 ⬝ H 2 O/rGO composite (Figure 3e), there is an additional peak at 534.0 eV, [ 23 ] which is assigned to CO.…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Induced Phase Transition in V₃O₇ · H₂O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries

Cao

Zheng

Norby

et al. 2021

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V3O7·H2O nanobelts/reduced graphene oxide (rGO) composites (weight ratio: 86%/14%) are synthesized by a microwave approach with a high yield (85%) through controlling pH with acids. The growth mechanisms of the highly crystalline nanobelts (average diameter: 25 nm; length: ≈20 µm; oriented along the [101] direction) have been thoroughly investigated, with the governing role of the acid upon the morphology and oxidation state of vanadium disclosed. When used as the ZIB cathode, the composite can deliver a high specific capacity of 410.7 and 385.7 mAh g−1 at the current density of 0.5 and 4 A g−1, respectively, with a high retention of the capacity of 93%. The capacity of the composite is greater than those of V3O7 · H2O, V2O5 nanobelts, and V5O12 · 6H2O film. Zinc ion storage in V3O7·H2O/rGO is mainly a pseudocapacitive behavior rather than ion diffusion. The presence of rGO enables outstanding cycling stability of up to 1000 cycles with a capacity retention of 99.6%. Extended cycling shows a gradual phase transition, that is, from the original orthorhombic V3O7 · H2O to a stable hexagonal Zn3(VO4)2(H2O)2.93 phase, which is a new electrochemical route found in V3O7 materials. This phase transition process provides new insight into the reactions of aqueous ZIBs.

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Section: Resultsmentioning

confidence: 99%

Electrochemically Induced Phase Transition in V₃O₇ · H₂O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries

Cao

Zheng

Norby

et al. 2021

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“…The characteristic absorption peaks near 1000 cm −1 (976, 980, 1007, 1016, 1020 and 1022 cm −1 ) can be attributed to stretching vibrations of terminal oxygen bonds (V=O). It should be noted that the appearance of relatively low wave numbers (976, 980 and 1007 cm −1 ) for V=O vibrations is caused by the V 4+ in V 3 O 7 ·H 2 O NBs, V 3 O 7 ·H 2 O/VO 2 (B)* NBs and VO 2 (B) NBs/MWCNTs because the bond length of V 4+ =O is longer than that of V 5+ =O, leading to the decrease of frequency [22]. The peaks at 802 cm −1 and below 600 cm −1 (449, 480, 546, 557, 567 and 577 cm −1 ) emerge because of the vibration modes of the doubly coordinated oxygen (V-O-V) bonds in V 2 O 5 and the triply coordinated oxygen (V 3 –O) bonds within VO x , respectively [23].…”

Section: Resultsmentioning

confidence: 99%

Controlled Hydrothermal Growth and Li+ Storage Performance of 1D VOx Nanobelts with Variable Vanadium Valence

Jiang

Zhou

et al. 2019

Nanomaterials

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One-dimensional (1D) vanadium oxide nanobelts (VOx NBs) with variable V valence, which include V3O7·H2O NBs, VO2 (B) NBs and V2O5 NBs, were prepared by a simple hydrothermal treatment under a controllable reductive environment and a following calcination process. Electrochemical measurements showed that all these VOx NBs can be adopted as promising cathode active materials for lithium ion batteries (LIBs). The Li+ storage mechanism, charge transfer property at the solid/electrolyte interface and Li+ diffusion characteristics for these as-synthesized 1D VOx NBs were systematically analyzed and compared with each other. The results indicated that V2O5 NBs could deliver a relatively higher specific discharge capacity (213.3 mAh/g after 50 cycles at 100 mA/g) and median discharge voltage (~2.68–2.71 V vs. Li/Li+) during their working potential range when compared to other VOx NBs. This is mainly due to the high V valence state and good crystallinity of V2O5 NBs, which are beneficial to the large Li+ insertion capacity and long-term cyclic stability. In addition, the as-prepared VO2 (B) NBs had only one predominant discharge plateau at the working potential window so that it can easily output a stable voltage and power in practical LIB applications. This work can provide useful references for the selection and easy synthesis of nanoscaled 1D vanadium-based cathode materials.

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“…The hydro/solvothermal synthesis route can also yield V 2 O 5 nanowires. Ahirrao et al followed a similar hydrothermal process with ammonium metavanadate (NH 4 VO 3 ) to yield a similar lamellar rGO structure with intercalated V 2 O 5 nanowires [55]. First, NH 4 VO 3 was calcinated into V 2 O 5 , and the V 2 O 5 powder was then sonicated with GO in DI water and heated at 180 • C for two days in an autoclave.…”

Section: Effects Of Synthesis Methodsmentioning

confidence: 99%

Recent Development in Vanadium Pentoxide and Carbon Hybrid Active Materials for Energy Storage Devices

et al. 2021

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With the increasing energy demand for portable electronics, electric vehicles, and green energy storage solutions, the development of high-performance supercapacitors has been at the forefront of energy storage and conversion research. In the past decade, many scientific publications have been dedicated to designing hybrid electrode materials composed of vanadium pentoxide (V2O5) and carbon nanomaterials to bridge the gap in energy and power of traditional batteries and capacitors. V2O5 is a promising electrode material owing to its natural abundance, nontoxicity, and high capacitive potential. However, bulk V2O5 is limited by poor conductivity, low porosity, and dissolution during charge/discharge cycles. To overcome the limitations of V2O5, many researchers have incorporated common carbon nanostructures such as reduced graphene oxides, carbon nanotubes, carbon nanofibers, and other carbon moieties into V2O5. The carbon components facilitate electron mobility and act as porous templates for V2O5 nucleation with an enhanced surface area as well as interconnected surface morphology and structural stability. This review discusses the development of various V2O5/carbon hybrid materials, focusing on the effects of different synthesis methods, V2O5/carbon compositions, and physical treatment strategies on the structure and electrochemical performance of the composite material as promising supercapacitor electrodes.

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V2O5 nanowires-graphene composite as an outstanding electrode material for high electrochemical performance and long-cycle-life supercapacitor

Cited by 51 publications

References 60 publications

Electrochemically Induced Phase Transition in V₃O₇ · H₂O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries

Electrochemically Induced Phase Transition in V₃O₇ · H₂O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries

Controlled Hydrothermal Growth and Li+ Storage Performance of 1D VOx Nanobelts with Variable Vanadium Valence

Recent Development in Vanadium Pentoxide and Carbon Hybrid Active Materials for Energy Storage Devices

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V2O5 nanowires-graphene composite as an outstanding electrode material for high electrochemical performance and long-cycle-life supercapacitor

Cited by 51 publications

References 60 publications

Electrochemically Induced Phase Transition in V3O7 · H2O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries

Electrochemically Induced Phase Transition in V3O7 · H2O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries

Controlled Hydrothermal Growth and Li+ Storage Performance of 1D VOx Nanobelts with Variable Vanadium Valence

Recent Development in Vanadium Pentoxide and Carbon Hybrid Active Materials for Energy Storage Devices

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Product

Resources

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Electrochemically Induced Phase Transition in V₃O₇ · H₂O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries

Electrochemically Induced Phase Transition in V₃O₇ · H₂O Nanobelts/Reduced Graphene Oxide Composites for Aqueous Zinc‐Ion Batteries