Atomic-scale investigation of the reversible α- to ω-phase lithium ion charge – discharge characteristics of electrodeposited vanadium pentoxide nanobelts

Hussein, Haytham E. M.; Beanland, Richard; Sanchez, Ana M.; Walker, David S.; Walker, Marc; Han, Yisong; Macpherson, Julie V.

doi:10.1039/d1ta10208g

Cited by 6 publications

(8 citation statements)

References 72 publications

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“…This is one of the easiest and less complex methods to grow crystalline V 2 O 5 structures, which can be used for various applications. Apart from one of the in situ TEM experiments where amorphous V 2 O 5 was transferred to crystalline orthorhombic V 2 O 5 , not many attempts were made to observe the growth of vanadium oxide-based materials via in situ TEM. The V 2 O 5 nanobelts and nanosheets ,, prepared with this method of thermal decomposition of AMV precursor show to be an excellent candidate as a cathode for Li-ion battery applications in comparison to the conventionally grown nanobelts and nanosheets using amorphous or crystal V 2 O 5 precursors. ,,,, Although precise control over the thickness and growth of the nanobelts or nanosheets is not a strong feature of this method, it provides a great opportunity to observe and investigate the growth of V 2 O 5 -based structures through in situ TEM experiments with no requirements of specialized instruments.…”

Section: Resultsmentioning

confidence: 99%

Thermolysis-Driven Growth of Vanadium Oxide Nanostructures Revealed by In Situ Transmission Electron Microscopy: Implications for Battery Applications

Gavhane

Sontakke

Huis

2023

ACS Appl. Nano Mater.

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Understanding the growth modes of 2D transition-metal oxides through direct observation is of vital importance to tailor these materials to desired structures. Here, we demonstrate thermolysis-driven growth of 2D V2O5 nanostructures via in situ transmission electron microscopy (TEM). Various growth stages in the formation of 2D V2O5 nanostructures through thermal decomposition of a single solid-state NH4VO3 precursor are unveiled during the in situ TEM heating. Growth of orthorhombic V2O5 2D nanosheets and 1D nanobelts is observed in real time. The associated temperature ranges in thermolysis-driven growth of V2O5 nanostructures are optimized through in situ and ex situ heating. Also, the phase transformation of V2O5 to VO2 was revealed in real time by in situ TEM heating. The in situ thermolysis results were reproduced using ex situ heating, which offers opportunities for upscaling the growth of vanadium oxide-based materials. Our findings offer effective, general, and simple pathways to produce versatile 2D V2O5 nanostructures for a range of battery applications.

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Section: Resultsmentioning

confidence: 99%

Thermolysis-Driven Growth of Vanadium Oxide Nanostructures Revealed by In Situ Transmission Electron Microscopy: Implications for Battery Applications

Gavhane

Sontakke

Huis

2023

ACS Appl. Nano Mater.

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“…1500 °C in vacuum and 950 °C in air and is an excellent conductor of heat , (∼700 W m –1 K –1 at 300 K). These properties not only enable BDD-TEM substrates to be used in high temperature electrochemical applications, they also ensure that the temperature the BDD-TEM electrode experiences during in-situ TEM heating, matches that of the TEM heater. Here, BDD-TEM electrodes were employed to investigate the temperature-induced crystallization of electrodeposited amorphous manganese oxide (MnO 2 ).…”

Section: Resultsmentioning

confidence: 99%

Electron Beam Transparent Boron Doped Diamond Electrodes for Combined Electrochemistry─Transmission Electron Microscopy

et al. 2022

Self Cite

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The majority of carbon based transmission electron microscopy (TEM) platforms (grids) have a significant sp2 carbon component. Here, we report a top down fabrication technique for producing freestanding, robust, electron beam transparent and conductive sp3 carbon substrates from boron doped diamond (BDD) using an ion milling/polishing process. X-ray photoelectron spectroscopy and electrochemical measurements reveal the sp3 carbon character and advantageous electrochemical properties of a BDD electrode are retained during the milling process. TEM diffraction studies show a dominant (110) crystallographic orientation. Compared with conventional carbon TEM films on metal supports, the BDD-TEM electrodes offer superior thermal, mechanical and electrochemical stability properties. For the latter, no carbon loss is observed over a wide electrochemical potential range (up to 1.80 V vs RHE) under prolonged testing times (5 h) in acid (comparable with accelerated stress testing protocols). This result also highlights the use of BDD as a corrosion free electrocatalyst TEM support for fundamental studies, and in practical energy conversion applications. High magnification TEM imaging demonstrates resolution of isolated, single atoms on the BDD-TEM electrode during electrodeposition, due to the low background electron scattering of the BDD surface. Given the high thermal conductivity and stability of the BDD-TEM electrodes, in situ monitoring of thermally induced morphological changes is also possible, shown here for the thermally induced crystallization of amorphous electrodeposited manganese oxide to the electrochemically active γ-phase.

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“…There are four voltage platforms at ~3.2, ~3.1, ~2.1, and ~1.8 V (vs. Li + /Li) in the first discharge (lithiation) process, which are attributed to four consecutive two-phase reactions, namely α-ɛ, ɛ-δ, δ-γ, and γ-ω. [81][82][83] These phase transitions of α-V 2 O 5 are accompanied by the puckering of the [V 2 O 5 ] layers (Figure 3b). [84] The lithiation products Li x V 2 O 5 (0 < x < 3) and their crystalline structures are schematically shown in Figure 3(b).…”

Section: Lithium-ion Batteriesmentioning

confidence: 98%

“…That is, reducing the particle size of V 2 O 5 could enable the reversible transformation from ω-Li 3 V 2 O 5 into α-V 2 O 5 through electrochemical lithium extraction (Figure 3a). [81,92,93] 3.2. Sodium-ion batteries α-V 2 O 5 has also been reported as electrode materials for NIBs.…”

Section: Lithium-ion Batteriesmentioning

confidence: 99%

Structure Evolution of V₂O₅ as Electrode Materials for Metal‐Ion Batteries

Niu

Chen

et al. 2023

Batteries & Supercaps

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With the increasing demand for next‐generation electrochemical energy storage systems, various kinds of metal‐ion batteries have been developed in the past several decades, such as lithium‐ion batteries (LIBs), sodium‐ion batteries (NIBs), potassium‐ion batteries (KIBs), magnesium‐ion batteries (MIBs), zinc‐ion batteries (ZIBs), calcium‐ion batteries (CIBs), and aluminum‐ion batteries (AIBs). Due to its open structure, large interlayer spacings, multiple valence states, and reversible structural variations, layered V2O5, including two polymorphs of single layered α‐V2O5 and double layered V2O5 ⋅ nH2O, has been reported as a universal electrode material for all kinds of metal‐ion batteries mentioned above. In this review, we aim to summarize and compare the structure evolution of α‐V2O5 and V2O5 ⋅ nH2O during the insertion/extraction of various kinds of metal‐ions. This short review is expected to be helpful to comprehensively understand the structure evolution mechanism of α‐V2O5 and V2O5 ⋅ nH2O reacting with different metallic charge carriers and inspire the development of new electrode materials for high‐performance metal‐ion batteries.

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Atomic-scale investigation of the reversible α- to ω-phase lithium ion charge – discharge characteristics of electrodeposited vanadium pentoxide nanobelts

Abstract: Using an electrochemical potential pulse methodology in a mixed solvent system, electrochemical deposition of amorphous vanadium pentoxide (V2O5) nanobelts is possible. Crystallisation of the material is achieved using in air...

Cited by 6 publications

References 72 publications

Thermolysis-Driven Growth of Vanadium Oxide Nanostructures Revealed by In Situ Transmission Electron Microscopy: Implications for Battery Applications

Thermolysis-Driven Growth of Vanadium Oxide Nanostructures Revealed by In Situ Transmission Electron Microscopy: Implications for Battery Applications

Electron Beam Transparent Boron Doped Diamond Electrodes for Combined Electrochemistry─Transmission Electron Microscopy

Structure Evolution of V₂O₅ as Electrode Materials for Metal‐Ion Batteries

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Atomic-scale investigation of the reversible α- to ω-phase lithium ion charge – discharge characteristics of electrodeposited vanadium pentoxide nanobelts

Abstract: Using an electrochemical potential pulse methodology in a mixed solvent system, electrochemical deposition of amorphous vanadium pentoxide (V2O5) nanobelts is possible. Crystallisation of the material is achieved using in air...

Cited by 6 publications

References 72 publications

Thermolysis-Driven Growth of Vanadium Oxide Nanostructures Revealed by In Situ Transmission Electron Microscopy: Implications for Battery Applications

Thermolysis-Driven Growth of Vanadium Oxide Nanostructures Revealed by In Situ Transmission Electron Microscopy: Implications for Battery Applications

Electron Beam Transparent Boron Doped Diamond Electrodes for Combined Electrochemistry─Transmission Electron Microscopy

Structure Evolution of V2O5 as Electrode Materials for Metal‐Ion Batteries

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Structure Evolution of V₂O₅ as Electrode Materials for Metal‐Ion Batteries