Large-scale synthesis of Co2V2O7 hexagonal microplatelets under ambient conditions for highly reversible lithium storage

Wu, Fangfang; Yu, Chunhui; Liu, Wenxiu; Wang, Ting; Feng, Jinkui; Xiong, Shenglin

doi:10.1039/c5ta03106k

Cited by 120 publications

(97 citation statements)

References 63 publications

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“…When the current densities increase, it even shows about 6–14 times higher capacity than conventional NF and slurry‐based Co 2 VO 4 electrodes. The electrode‐based capability of NF@Co 2 VO 4 @C and AB/Co 2 VO 4 @C in Figure are at the same level as other previously reported cobalt vanadates . The summary and comparison with previous publications are given in Table S1 and Figure S9 (Supporting Information).…”

Section: Resultssupporting

confidence: 75%

“…The mechanism studies in previous reports showed that cobalt vanadate anodes were usually decomposed into CoO and Li x V 2 O 5 during the first lithiation. The continued lithiation concurrently induced the conversion reaction of cobalt monoxide and the intercalation reaction of vanadium pentoxide . Li x V 2 O 5 was previously studied as the cathode materials because of the relatively high potentials at high valences of vanadium .…”

Section: Introductionmentioning

confidence: 99%

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Novel Co₂VO₄ Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Zhu

Liu

Wang

et al. 2017

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A novel spinel Co VO is studied as the Li-ion battery anode material and it is sandwiched with a 3D ultralight porous current collector (PCC) and amorphous carbon. Co VO demonstrates the high capacity and excellent cyclability because of the mixed lithium storage mechanisms. The 3D composite structure requires no binders and replaces the conventional current collector (Cu foil) with a 3D ultralight porous metal scaffold, yielding the high electrode-based capacity. Such a novel composite anode also enables the close adhesion of Co VO to the PCC scaffold. The resulting monolithic electrode has the rapid electron pathway and stable mechanical properties, which lead to the excellent rate capabilities and cycling properties. At a current density of 1 A g , the PCC and carbon sandwiched Co VO anode is able to deliver a stable reversible capacity of about 706.8 mAh g after 1000 cycles. Generally, this study not only develops a new Co VO anode with high capacity and good cyclability, but also demonstrates an alternative approach to improve the electrochemical properties of high capacity anode materials by using ultralight porous metallic current collector instead of heavy copper foil.

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Section: Resultssupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Novel Co₂VO₄ Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Zhu

Liu

Wang

et al. 2017

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“…The pore size distribution curve for the adsorption by BJH method clearly indicates that most of the pores are available in the region of 2 -10 3 V 2 O 8 nanoplatelets is 5.9 nm. The high surface area with porous nature helps to enhance the diffusion of ions which improve the electrochemical performance in 23 .…”

Section: Journal Namementioning

confidence: 99%

Synthesis of Zn₃V₂O₈ nanoplatelets for lithium-ion battery and supercapacitor applications

2015

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Zn3V2O8 nanoplatelets were successfully synthesized using a hydrothermal method. Formation of the Zn3V2O8 nanoplatelets was explained through splitting, exfoliation and self-aggregation mechanisms. FESEM revealed nanoplatelet morphology with thickness of 27.9 nm. HRTEM imaging confirmed the crystalline nature of the Zn3V2O8 nanoplatelets, and the SAED pattern clearly indicated the prepared sample to be Zn3V2O8. The prepared Zn3V2O8 nanoplatelets were further studied for their potential application in Li-ion batteries and supercapacitors. The discharge capacity of the second cycle was 558 mA h g -1 at 100 mA g -1 . The Zn3V2O8 nanoplatelets exhibited a maximum specific capacitance of 302 F g -1 at a scan rate of 5 mV s -1 . Furthermore, the Zn3V2O8 electrode retained about 98 % of its initial specific capacitance after 2000 cycles. The described Zn3V2O8 nanoplatelets were found to be a highly suitable electrode material for energy storage applications. Fig.4 (a-c) FESEM images of Zn 3 V 2 O 8 nanoplatelets at different magnifications, (d) AFM image of Zn 3 V 2 O 8 nanoplatelets, (e, f and g) HRTEM images of Zn 3 V 2 O 8 nanoplatelets, and (h) SAED pattern of Zn 3 V 2 O 8 nanoplatelets.

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“…Afterward, the capacity gradually increases to 951 mAh g −1 at the end of 80 cycles. The increase in capacity during cycling is commonly observed in many metal oxide-based anode materials [44, 45]. This phenomenon might be associated with the gradual activation of the Fe 2 O 3 @Co 3 O 4 composite during cycling, which enhances the accessibility of lithium ions in the electrode material [46, 47].…”

Section: Resultsmentioning

confidence: 99%

Metal–Organic Framework-Assisted Synthesis of Compact Fe2O3 Nanotubes in Co3O4 Host with Enhanced Lithium Storage Properties

et al. 2018

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Transition metal oxides are promising candidates for the high-capacity anode material in lithium-ion batteries. The electrochemical performance of transition metal oxides can be improved by constructing suitable composite architectures. Herein, we demonstrate a metal–organic framework (MOF)-assisted strategy for the synthesis of a hierarchical hybrid nanostructure composed of Fe2O3 nanotubes assembled in Co3O4 host. Starting from MOF composite precursors (Fe-based MOF encapsulated in a Co-based host matrix), a complex structure of Co3O4 host and engulfed Fe2O3 nanotubes was prepared by a simple annealing treatment in air. By virtue of their structural and compositional features, these hierarchical composite particles reveal enhanced lithium storage properties when employed as anodes for lithium-ion batteries. Electronic supplementary materialThe online version of this article (10.1007/s40820-018-0197-1) contains supplementary material, which is available to authorized users.

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Large-scale synthesis of Co₂V₂O₇ hexagonal microplatelets under ambient conditions for highly reversible lithium storage

Abstract: Co2V2O7 monodisperse hexagonal nanoplatelets (MHNPs) were obtained via a hexamethylenetetramine-assisted water bath method. The excellent electrochemical activities are due to the unique structure of MHNPs and likely synergetic effects of different metal ions.

Cited by 120 publications

References 63 publications

Novel Co₂VO₄ Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Novel Co₂VO₄ Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Synthesis of Zn₃V₂O₈ nanoplatelets for lithium-ion battery and supercapacitor applications

Metal–Organic Framework-Assisted Synthesis of Compact Fe2O3 Nanotubes in Co3O4 Host with Enhanced Lithium Storage Properties

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Large-scale synthesis of Co2V2O7 hexagonal microplatelets under ambient conditions for highly reversible lithium storage

Abstract: Co2V2O7 monodisperse hexagonal nanoplatelets (MHNPs) were obtained via a hexamethylenetetramine-assisted water bath method. The excellent electrochemical activities are due to the unique structure of MHNPs and likely synergetic effects of different metal ions.

Cited by 120 publications

References 63 publications

Novel Co2VO4 Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Novel Co2VO4 Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Synthesis of Zn3V2O8 nanoplatelets for lithium-ion battery and supercapacitor applications

Metal–Organic Framework-Assisted Synthesis of Compact Fe2O3 Nanotubes in Co3O4 Host with Enhanced Lithium Storage Properties

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Large-scale synthesis of Co₂V₂O₇ hexagonal microplatelets under ambient conditions for highly reversible lithium storage

Novel Co₂VO₄ Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Novel Co₂VO₄ Anodes Using Ultralight 3D Metallic Current Collector and Carbon Sandwiched Structures for High‐Performance Li‐Ion Batteries

Synthesis of Zn₃V₂O₈ nanoplatelets for lithium-ion battery and supercapacitor applications