Synthesis of single crystalline (NH4)2V6O16·1.5H2O nest-like structures

Chithaiah, Pallellappa; Kumar, G. Vijaya; Nagabhushana, G. P.; Nagaraju, G.; Chandrappa, G. T.

doi:10.1016/j.physe.2013.12.022

Cited by 12 publications

(3 citation statements)

References 23 publications

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“…In this work, we report for the first time that (NH 4 ) 2 V 6 O 16 ·1.5H 2 O (hereafter named NHVO-H 2 O) can be used as a potential high-voltage cathode material for MIBs. This NH 4 + pre-intercalated hydrated vanadium oxide was reported in several literature, − but it has not been studied as a cathode material for MIBs. Compared to the previously reported NH 4 V 4 O 10 cathode material containing 1.0 mol of NH 4 + between two V 2 O 5 layers, 2.0 mol of NH 4 + locates in the V 3 O 8 interlayer spacing of NHVO-H 2 O.…”

Section: Introductionmentioning

confidence: 93%

Magnesium Ion Storage Properties in a Layered (NH₄)₂V₆O₁₆·1.5H₂O Nanobelt Cathode Material Activated by Lattice Water

Wei

Lian

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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Magnesium ion batteries have attracted increasing attention as a promising energy storage device due to the high safety, high volumetric capacity, and low cost of Mg. However, the strong Coulombic interactions between Mg 2+ ions and cathode materials seriously hinder the electrochemical performance of the batteries. To seek a promising cathode material for magnesium ion batteries, in this work, (NH 4 ) 2 V 6 O 16 •1.5H 2 O and water-free (NH 4 ) 2 V 6 O 16 materials are synthesized by a onestep hydrothermal method. The effects of NH 4 + and lattice water on the Mg 2+ storage properties in these kinds of layered cathode materials are investigated by experiments and first-principles calculations. Lattice water is demonstrated to be of vital importance for Mg 2+ storage, which not only stabilizes the layered structure of (NH 4 ) 2 V 6 O 16 • 1.5H 2 O but also promotes the transport kinetics of Mg 2+ . Electrochemical experiments of (NH 4 ) 2 V 6 O 16 •1.5H 2 O show a specific capacity of 100 mA•h•g −1 with an average discharge voltage of 2.16 V vs Mg 2+ /Mg, highlighting the potential of (NH 4 ) 2 V 6 O 16 •1.5H 2 O as a high-voltage cathode material for magnesium ion batteries. KEYWORDS: magnesium ion battery, layered material, (NH 4 ) 2 V 6 O 16 •1.5H 2 O, first-principles calculations, electrochemical properties

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Section: Introductionmentioning

confidence: 93%

Magnesium Ion Storage Properties in a Layered (NH₄)₂V₆O₁₆·1.5H₂O Nanobelt Cathode Material Activated by Lattice Water

Wei

Lian

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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“…As a promising cathode material for LIBs, vanadium oxides and their derivatives have attracted tremendous attentions due to their easy synthesis, low cost, high capacity and good structural reversibility [5]. Recently, there have been many researchers reported ammonium vanadium with different morphologies such as (NH 4 ) 2 V 6 O 16 nanorods [6, 7], NH 4 V 3 O 8 nanorods [8, 9], NH 4 V 4 O 10 nanobelts [10, 11], (NH 4 ) 0.83 Na 0.43 V 4 O 10 nanoplatelets [12] and NH 4 V 3 O 8 /carbon nanotubes [13]. These efforts improve the electrochemical lithium insertion performances of ammonium vanadate significantly.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of reduced graphene oxide/NH ₄ V ₃ O ₈ with high capacity as a cathode material for lithium ion batteries

Kou

Cao

Huang

et al. 2017

Micro & Nano Letters

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Owing to low-electronic conductivity and long lithium ion diffusion path of NH 4 V 3 O 8 limit its application for lithium-ion batteries (LIBs). To overcome these limitation, a new nano-composites material of NH 4 V 3 O 8-based have been successfully fabricated by a facial and environmental friendly approach, without the addition of any other template or surfactant. A facile hydrothermal route is employed to synthesised the reduced graphene oxide(rGO)/NH 4 V 3 O 8 composites. Results show that the NH 4 V 3 O 8 nano-belt are well distributed on the surface of rGO nanosheets. The resulted rGO/NH 4 V 3 O 8 nanocomposites exhibit a high capacity as a cathode material for LIBs in comparison with the bare NH 4 V 3 O 8 .When used as cathode material for LIBs, it delivers a maximum discharge capacity of 253 mAhg −1 at 15 mAg −1 , 70 mAhg −1 larger than that of the pristine one. The enhanced electrochemical performance is attributed to the synergetic effects between NH 4 V 3 O 8 and rGO, such as increased conductivity and shortened lithium ion diffusion path.

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“…3은 앞에서 생성된 침전물의 X-선 회절 특성 앞의 연구결과에 의하면, 본 연구에서 사용된 바나듐 함유 수용액은 바나듐광의 염배소-수침출 과정을 거쳐 얻 은 수용액으로서 소듐이 약 25,900 mg/L 정도로 다량 함 유되어 있으며, 따라서 수용액 pH를 2로 낮추고 90℃로 올려주는 과정에서 소듐폴리바나데이트가 침전되는 것을 확인할 수 있었다. 소듐이 다량 함유되어 있는 바나데이트 수용액이 산성 영역에서는 다음과 같은 과정을 거쳐서 소듐폴리바나데 이트 침전반응이 일어난다17) . [H 2 V 10 O 28 ] 4-+ 4H + + 32H 2 O 3 (H 2 O) 2 ] [VO 2 (H 2 O) 4 ] + H T  [VO(OH) 3 (H 2 O) 2 ] + H + (3) 6[VO(OH) 3 (H 2 O) 2 ] + 2Na + H T (4) 바나듐이 남아있다.…”

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Effects of Vanadate Solution Property on the Precipitation of Ammonium (Meta, Poly)Vanadate

Yoon¹,

Heo²,

Park³

et al. 2023

Resour. Recycl.

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Good control of the solution pH and temperature is required to recover vanadium from the water leaching solution of vanadium ore after sodium roasting. However, such adjustments could lead to aluminum-vanadium and sodium-vanadium co-precipitation, which greatly affects the efficiency of vanadium recovery. In this study, a process that can increase the efficiency of vanadium recovery as ammonium metavanadate [NH 4 VO 3 ] and ammonium polyvanadate [(NH 4 ) 2 V 6 O 16 •H 2 O]

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Synthesis of single crystalline (NH4)2V6O16·1.5H2O nest-like structures

Cited by 12 publications

References 23 publications

Magnesium Ion Storage Properties in a Layered (NH₄)₂V₆O₁₆·1.5H₂O Nanobelt Cathode Material Activated by Lattice Water

Magnesium Ion Storage Properties in a Layered (NH₄)₂V₆O₁₆·1.5H₂O Nanobelt Cathode Material Activated by Lattice Water

Facile synthesis of reduced graphene oxide/NH ₄ V ₃ O ₈ with high capacity as a cathode material for lithium ion batteries

Effects of Vanadate Solution Property on the Precipitation of Ammonium (Meta, Poly)Vanadate

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Synthesis of single crystalline (NH4)2V6O16·1.5H2O nest-like structures

Cited by 12 publications

References 23 publications

Magnesium Ion Storage Properties in a Layered (NH4)2V6O16·1.5H2O Nanobelt Cathode Material Activated by Lattice Water

Magnesium Ion Storage Properties in a Layered (NH4)2V6O16·1.5H2O Nanobelt Cathode Material Activated by Lattice Water

Facile synthesis of reduced graphene oxide/NH 4 V 3 O 8 with high capacity as a cathode material for lithium ion batteries

Effects of Vanadate Solution Property on the Precipitation of Ammonium (Meta, Poly)Vanadate

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Magnesium Ion Storage Properties in a Layered (NH₄)₂V₆O₁₆·1.5H₂O Nanobelt Cathode Material Activated by Lattice Water

Magnesium Ion Storage Properties in a Layered (NH₄)₂V₆O₁₆·1.5H₂O Nanobelt Cathode Material Activated by Lattice Water

Facile synthesis of reduced graphene oxide/NH ₄ V ₃ O ₈ with high capacity as a cathode material for lithium ion batteries