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Vanadium-Based Nanomaterials for Imp...

Lai, Jianwei,

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Vanadium-Based Nanomaterials for Improved Zn Ion Storage /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Vanadium-Based Nanomaterials for Improved Zn Ion Storage // Jianwei Lai.
Author:	Lai, Jianwei,
Description:	1 electronic resource (74 pages)
Notes:	Source: Masters Abstracts International, Volume: 83-11.
Contained By:	Masters Abstracts International83-11.
Subject:	Crystal structure. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29114455
ISBN:	9798438707226

Vanadium-Based Nanomaterials for Improved Zn Ion Storage /
Lai, Jianwei,

Vanadium-Based Nanomaterials for Improved Zn Ion Storage /Jianwei Lai. - 1 electronic resource (74 pages)

Source: Masters Abstracts International, Volume: 83-11.

Rechargeable aqueous zinc-ion batteries (ZIBs) have been intensively studied as novel promising large-scale energy storage systems recently, owing to their advantages of high abundance, cost effectiveness, and high safety. However, the development of suitable cathode materials with superior performance are severely hampered by the sluggish kinetics of Zn2+ with divalent charge in the host structure. Our Work demonstrates boosting the electrochemical performances of nanostructured cathode materials for aqueous ZIBs. The first project is focused on the interlayer-expanded V6O13∙nH2O nanosheets as promising cathodes. Benefiting from the synthetic merits of its favorable architecture and expanded interlamellar spacing resulted from its structural water, the V6O13∙nH2O cathode exhibits outstanding electrochemical performances with a high reversible capacity of 395 mAh g-1 at 0.1 A g-1, superior rate capability, and durable cycling stability with a capacity retention of 87% up to 1000 cycles. In addition, the reaction mechanism is significantly investigated in detail. Moreover, the second project is focused on the synthesis of NH4V3O8∙1.9H2O nanobelts and investigation of the electrochemical properties in aqueous and quasi-solid-state (QSS) ZIBs. When examined in aqueous ZIBs, this cathode material enables ultrafast Zn2+ diffusion and highly reversible process, exhibiting superior electrochemical performances with a high discharge capacity of 463 mAh g-1 at 0.1 A g-1, excellent rate capability (183 mAh g-1 even at 10 A g-1), and impressive cycling stability with a capacity retention of 81% after 2000 cycles maintaining a decent discharge capacity of 166 mAh g-1 at 10 A g-1. Furthermore, the NH4V3O8∙1.9H2O electrode can deliver a high energy density of 332 Wh kg-1 at a power density of 72 W kg-1 and maintain an energy density of 101 Wh kg-1 at a high power density of 5519 W kg-1. The NH4V4O10∙1.6H2O is also studied as cathode materials for aqueous ZIBs, showing inferior electrochemical properties when compared with NH4V3O8∙1.9H2O. In addition, the QSS flexible Zn/NH4V3O8∙1.9H2O battery is also studied, showing durable cycling performance and stable electrochemical properties under various bending states.The present studies demonstrate that the V6O13∙nH2O nanosheets and NH4V3O8∙1.9H2O nanobelts are emerging as high-potential cathode materials for rechargeable zinc-ion battery, and it sheds light on the rational design of novel cathodes for grid-scale energy storage devices.

English

ISBN: 9798438707226Subjects--Topical Terms:

3561040
Crystal structure.

Vanadium-Based Nanomaterials for Improved Zn Ion Storage /
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100 1 $a Lai, Jianwei, $e author. $3 3823841
245 1 0 $a Vanadium-Based Nanomaterials for Improved Zn Ion Storage / $c Jianwei Lai.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 1 electronic resource (74 pages)
336 $a text $b txt $2 rdacontent
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500 $a Source: Masters Abstracts International, Volume: 83-11.
500 $a Advisors: Wang, Ying.
502 $b M.Sc. $c Louisiana State University and Agricultural & Mechanical College $d 2019.
520 $a Rechargeable aqueous zinc-ion batteries (ZIBs) have been intensively studied as novel promising large-scale energy storage systems recently, owing to their advantages of high abundance, cost effectiveness, and high safety. However, the development of suitable cathode materials with superior performance are severely hampered by the sluggish kinetics of Zn2+ with divalent charge in the host structure. Our Work demonstrates boosting the electrochemical performances of nanostructured cathode materials for aqueous ZIBs. The first project is focused on the interlayer-expanded V6O13∙nH2O nanosheets as promising cathodes. Benefiting from the synthetic merits of its favorable architecture and expanded interlamellar spacing resulted from its structural water, the V6O13∙nH2O cathode exhibits outstanding electrochemical performances with a high reversible capacity of 395 mAh g-1 at 0.1 A g-1, superior rate capability, and durable cycling stability with a capacity retention of 87% up to 1000 cycles. In addition, the reaction mechanism is significantly investigated in detail. Moreover, the second project is focused on the synthesis of NH4V3O8∙1.9H2O nanobelts and investigation of the electrochemical properties in aqueous and quasi-solid-state (QSS) ZIBs. When examined in aqueous ZIBs, this cathode material enables ultrafast Zn2+ diffusion and highly reversible process, exhibiting superior electrochemical performances with a high discharge capacity of 463 mAh g-1 at 0.1 A g-1, excellent rate capability (183 mAh g-1 even at 10 A g-1), and impressive cycling stability with a capacity retention of 81% after 2000 cycles maintaining a decent discharge capacity of 166 mAh g-1 at 10 A g-1. Furthermore, the NH4V3O8∙1.9H2O electrode can deliver a high energy density of 332 Wh kg-1 at a power density of 72 W kg-1 and maintain an energy density of 101 Wh kg-1 at a high power density of 5519 W kg-1. The NH4V4O10∙1.6H2O is also studied as cathode materials for aqueous ZIBs, showing inferior electrochemical properties when compared with NH4V3O8∙1.9H2O. In addition, the QSS flexible Zn/NH4V3O8∙1.9H2O battery is also studied, showing durable cycling performance and stable electrochemical properties under various bending states.The present studies demonstrate that the V6O13∙nH2O nanosheets and NH4V3O8∙1.9H2O nanobelts are emerging as high-potential cathode materials for rechargeable zinc-ion battery, and it sheds light on the rational design of novel cathodes for grid-scale energy storage devices.
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650 4 $a Crystal structure. $3 3561040
650 4 $a Aqueous solutions. $3 3681511
650 4 $a Polymers. $3 535398
650 4 $a Electrolytes. $3 656992
650 4 $a Oxidation. $3 714629
650 4 $a Electrodes. $3 629151
650 4 $a Spectrum analysis. $3 520440
650 4 $a Zinc. $3 2206375
650 4 $a Carbon. $3 604057
650 4 $a Flexibility. $3 3560705
650 4 $a Medical equipment. $3 3560831
650 4 $a Nanomaterials. $3 3558221
650 4 $a Retention. $3 2137396
650 4 $a Batteries. $3 3555267
650 4 $a Energy storage. $3 652130
650 4 $a Voltammetry. $3 3681694
650 4 $a Graphene. $3 1569149
650 4 $a Hydrogels. $3 1305894
650 4 $a Scanning electron microscopy. $3 551366
650 4 $a Analytical chemistry. $3 3168300
650 4 $a Chemistry. $3 516420
650 4 $a Energy. $3 876794
650 4 $a Nanotechnology. $3 526235
650 4 $a Optics. $3 517925
650 4 $a Polymer chemistry. $3 3173488
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710 2 $a Louisiana State University and Agricultural & Mechanical College. $e degree granting institution. $3 3771841
720 1 $a Wang, Ying $e degree supervisor.
773 0 $t Masters Abstracts International $g 83-11.
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792 $a 2019
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29114455