Na2V6O16·2.14H2O nanobelts as a stable cathode for aqueous zinc-ion batteries with long-term cycling performance

Hu, Fang; Xie, Di; Zhao, Depeng; Song, Guihong; Zhu, Kai

doi:10.1016/j.jechem.2019.03.036

Cited by 73 publications

(38 citation statements)

References 44 publications

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“…The thickness of as prepared rGO/MoO 3‐ x composite film is ∼ 50 μm. Compared with those nanoparticles or nanowires on layer structure, MoO 3‐ x nanosheets has a width of 2–3 μm, which possesses many advantages such as: larger contact area, stronger bonding and more effective compositing between MoO 3‐ x and rGO nanosheets. The rGO compensate the electronic conductivity of MoO 3‐ x .…”

Section: Resultsmentioning

confidence: 99%

Free‐standing Reduced Graphene Oxide/MoO_3‐x Composite Film with High Performance for Flexible Supercapacitors

Zhao

Wang

et al. 2019

ChemistrySelect

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For the fabrication of flexible supercapacitors, the biggest challenge is still the preparation of flexible electrodes with both high gravimetric and areal specific capacitances. Herein, we have successfully designed a novel rGO (reduced graphene oxide)/MoO 3-x composite film electrodes for high-performance flexible supercapacitor. The as-prepared electrodes exhibit a galvanostatic capacitance of 1374 F⋅g À 1 and an area specific capacitance as high as 21300 mF⋅cm À 2 at 0.1 A⋅g À 1 , which have been significantly larger compared with most recent reports. Meanwhile, the rGO/MoO 3-x composite electrodes have remarkable flexibility and solid mechanical strength. This composite film could be easily folded into various shapes, and then could recover its original appearance without any crease. Excellent cycle stability has also been validated with nearly 100% capacitance retention even after 30,000 cycles. The electrochemical performance of rGO/MoO 3-x composite films remain surprisingly stable even after continuous U-shape bending up to 10,000 times. Moreover, flexible all-solid-state symmetric supercapacitors were successfully fabricated with PVA (polyvinyl alcohol)-H 2 SO 4 gel electrolyte. Our strategy provides a convenient and versatile method for designing new flexible electrode for energy storage devices and is promising for portable and wearable electronics.

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Section: Resultsmentioning

confidence: 99%

Free‐standing Reduced Graphene Oxide/MoO_3‐x Composite Film with High Performance for Flexible Supercapacitors

Zhao

Wang

et al. 2019

ChemistrySelect

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“…The residual Zn 2+ could be from the decomposition of zinc acetate in the fabrication process. Meanwhile, from the 2nd to 200th cycle, the GCD curves exhibit a similar shape, manifesting high reversibility during the charging/discharging process . The corresponding cycling performance of Z‐V 5 O 12 ·6H 2 O at 500 mA g −1 is shown in Figure c, indicating a high reversible discharge capacity of 173 mAh g −1 with ≈100% of columbic efficiency (CE) after 200 cycles.…”

Section: Resultsmentioning

confidence: 85%

Lamellar V₅O₁₂·6H₂O Nanobelts Coupled with Inert Zn(OH)₂·0.5H₂O as Cathode for Aqueous Zn²⁺/Nonaqueous Na⁺ Storage Applications

Yan

Gao

et al. 2019

Energy Tech

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Lamellar V5O12·6H2O nanobelts coupled with inert Zn(OH)2·0.5H2O are in situ fabricated via a facile hydrothermal strategy. Herein, the inert Zn(OH)2·0.5H2O phase acts as a buffer matrix to strengthen the structural stability of V5O12·6H2O host material, relieving the severe volume variation. Therefore, benefiting from the large interplanar spacing of active V5O12·6H2O and volume buffering effect of inert Zn(OH)2·0.5H2O, V5O12·6H2O/Zn(OH)2·0.5H2O hybrid (denoted as Z‐V5O12·6H2O) sustainably endures the repetitive Zn2+/Na+ insertion/extraction and boosts the electrochemical properties. As cathodes for aqueous zinc‐ion batteries, the Z‐V5O12·6H2O hybrid shows a high discharge capacity of 328 mAh g−1 at 50 mA g−1 and keeps 146 mAh g−1 at 1 A g−1 after 1000 cycles. For nonaqueous sodium‐ion batteries, the hybrid also furnishes a high initial discharge capacity of 241 mAh g−1 at a current density of 50 mA g−1 and maintains 97 mAh g−1 at 100 mA g−1 after 100 cycles.

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“…[36,37] At present, AZIBs are regarded as one of the preferred high-performance candidates for large-scale energy storage, and thus trigger the strong and extensive research. [38][39][40]…”

Section: Statusmentioning

confidence: 99%

“…Rechargeable AZIBs have emerged and exhibited a promising application due to compelling advantages, such as the low‐toxicity and high abundance of zinc in the earth's crust (79 ppm), the suitable redox potential of zinc (−0.763 V vs SHE), the large specific gravimetric capacity (820 mAh g −1 ), as well as the higher ionic conductivity (∼1 S cm −1 ) and safety of aqueous electrolytes [36,37] . At present, AZIBs are regarded as one of the preferred high‐performance candidates for large‐scale energy storage, and thus trigger the strong and extensive research [38–40] …”

Section: Rechargeable Aqueous Zinc‐ion Batteriesmentioning

confidence: 99%

2020 Roadmap on Zinc Metal Batteries

Zhang

et al. 2020

Chemistry An Asian Journal

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Metallic zinc (Zn) is considered to be a safe and low-cost anode for rechargeable batteries. Thus, several zinc metal batteries (ZMBs) have been well developed, i. e., zinc silver batteries, ZnÀ MnO 2 batteries, nickel-zinc batteries, zincair batteries and other kinds of zinc ion batteries. ZMBs are strongly correlated with electrochemistry, electrodes, electrolytes and battery structures. To support the development of this field, we herein invite some famous research experts to write this roadmap for giving some guidance in future research. The roadmap will include their research status, challenge, opportunities, and the technology advance in their fields. We expect this roadmap will produce active influence in developing green, low-cost, safe ZMBs for our bright life in future.

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Na2V6O16·2.14H2O nanobelts as a stable cathode for aqueous zinc-ion batteries with long-term cycling performance

Cited by 73 publications

References 44 publications

Free‐standing Reduced Graphene Oxide/MoO_3‐x Composite Film with High Performance for Flexible Supercapacitors

Free‐standing Reduced Graphene Oxide/MoO_3‐x Composite Film with High Performance for Flexible Supercapacitors

Lamellar V₅O₁₂·6H₂O Nanobelts Coupled with Inert Zn(OH)₂·0.5H₂O as Cathode for Aqueous Zn²⁺/Nonaqueous Na⁺ Storage Applications

2020 Roadmap on Zinc Metal Batteries

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Na2V6O16·2.14H2O nanobelts as a stable cathode for aqueous zinc-ion batteries with long-term cycling performance

Cited by 73 publications

References 44 publications

Free‐standing Reduced Graphene Oxide/MoO3‐x Composite Film with High Performance for Flexible Supercapacitors

Free‐standing Reduced Graphene Oxide/MoO3‐x Composite Film with High Performance for Flexible Supercapacitors

Lamellar V5O12·6H2O Nanobelts Coupled with Inert Zn(OH)2·0.5H2O as Cathode for Aqueous Zn2+/Nonaqueous Na+ Storage Applications

2020 Roadmap on Zinc Metal Batteries

Contact Info

Product

Resources

About

Free‐standing Reduced Graphene Oxide/MoO_3‐x Composite Film with High Performance for Flexible Supercapacitors

Free‐standing Reduced Graphene Oxide/MoO_3‐x Composite Film with High Performance for Flexible Supercapacitors

Lamellar V₅O₁₂·6H₂O Nanobelts Coupled with Inert Zn(OH)₂·0.5H₂O as Cathode for Aqueous Zn²⁺/Nonaqueous Na⁺ Storage Applications