Memristive response of a new class of hydrated vanadium oxide intercalation compounds

Andrews, Justin L.; Singh, Sujay; Kilcoyne, Colin; Shamberger, Patrick J.; Sambandamurthy, G.; Banerjee, Sarbajit

doi:10.1557/mrc.2017.64

Cited by 7 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…88–0580), which is consistent with previous reports of δ‐[Ni(H 2 O) 4 ] 0.25 V 2 O 5 . [ 24,34 ] In the Ni 0.25 V 2 O 5 pattern, the dominant intensity of (001) peak at 2θ of ≈3.94° corresponds to an interlayer spacing of 10.3 Å, and the peaks at 11.67° and 11.85° refer to the (110) and (003) planes, respectively. In addition, the XRD Rietveld refinement of δ‐Ni 0.25 V 2 O 5 · n H 2 O and corresponding results of lattice parameters are presented in Figure S2e and Table S1, Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Multi‐Scale Investigations of δ‐Ni_0.25V₂O₅·nH₂O Cathode Materials in Aqueous Zinc‐Ion Batteries

McColl

et al. 2020

Advanced Energy Materials

204

142

View full text Add to dashboard Cite

devices to allow energy release at night and for continuous supply under low wind conditions. The most prevalent type of secondary energy storage uses lithiumion batteries (LIBs), that possess high energy density and long cycle life and have brought about a remarkable technical revolution for portable electronics, vehicles, and many other aspects in daily life. [1] However, considering the growing cost of the limited lithium resources and safety concerns derived from intrinsic chemical activity of metallic lithium and its combustible ester electrolytes, aqueous rechargeable batteries have been recently spotlighted as promising alternatives especially for utilization of large-scale energy storage stations. [2] Among them, aqueous zinc-ion batteries (AZIBs) have gained exceptional interest in aqueous systems due to the beneficial physicochemical properties of zinc, that is, i) a high theoretical volumetric capacity around 5585 mAh cm −3 of a metallic zinc anode compared with 2061 mAh cm −3 and 1129 mAh cm −3 for lithium and sodium anodes, respectively; ii) low redox potential of −0.762 V versus standard hydrogen electrode, and iii) electrochemical stability of metallic zinc in its sulfate solutions at near neutral or slightly acidic aqueous electrolyte providing the batteries with safe, costeffective, and environment-friendly characteristics. [3][4][5][6] Cost-effective and environmentally-friendly aqueous zinc-ion batteries (AZIBs) exhibit tremendous potential for application in grid-scale energy storage systems but are limited by suitable cathode materials. Hydrated vanadium bronzes have gained significant attention for AZIBs and can be produced with a range of different pre-intercalated ions, allowing their properties to be optimized. However, gaining a detailed understanding of the energy storage mechanisms within these cathode materials remains a great challenge due to their complex crystallographic frameworks, limiting rational design from the perspective of enhanced Zn 2+ diffusion over multiple length scales. Herein, a new class of hydrated porous δ-Ni 0.25 V 2 O 5 .nH 2 O nanoribbons for use as an AZIB cathode is reported. The cathode delivers reversibility showing 402 mAh g −1 at 0.2 A g −1 and a capacity retention of 98% over 1200 cycles at 5 A g −1 . A detailed investigation using experimental and computational approaches reveal that the host "δ" vanadate lattice has favorable Zn 2+ diffusion properties, arising from the atomic-level structure of the well-defined lattice channels. Furthermore, the microstructure of the as-prepared cathodes is examined using multi-length scale X-ray computed tomography for the first time in AZIBs and the effective diffusion coefficient is obtained by imagebased modeling, illustrating favorable porosity and satisfactory tortuosity.

show abstract

Section: Resultsmentioning

confidence: 99%

Multi‐Scale Investigations of δ‐Ni_0.25V₂O₅·nH₂O Cathode Materials in Aqueous Zinc‐Ion Batteries

McColl

et al. 2020

Advanced Energy Materials

204

142

View full text Add to dashboard Cite

show abstract

“…The filament formation is often discussed as the mechanism of memristive switching for V 2 O 5 layers. 26,[53][54][55][56][57][58] However, the following details should be noted. (1) No one has demonstrated direct observation of the filament in the V 2 O 5 layers.…”

Section: Discussionmentioning

confidence: 99%

“…Memristive elements, which encode information in multiple internal states and reflect the dynamic evolution of these states, are a promising alternative. Andrews et al 26 report the observation of pinched loop hysteretic memristive behaviour in single-crystalline nanowires of a versatile class of layered vanadium oxide bronze with the composition, thought to originate from the proton diffusion in the interlayer regions. The Pt/V 2 O 5 /Pt sandwich structure was carefully constructed to simulate the suboxide V 2 O 5− x and Mott VO 2 nanochannels in the layered V 2 O 5 matrix and to investigate brain-like processing and nerve pain perception functions, respectively.…”

Section: Introductionmentioning

confidence: 99%

Thin V₂O₅ films synthesized by plasma-enhanced atomic layer deposition for memristive applications

Antonova,

Seleznev,

Nebogatikova

et al. 2023

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…Layered δ-M x V 2 O 5 bronzes (M = Tl and Pb) were synthesized by adapting previously reported methods. , Briefly, the materials were prepared by the reaction between bulk as-obtained orthorhombic V 2 O 5 and the desired metal acetate salt as follows 16 normalV 2 normalO 5 false( normals false) + 8 TlCOOCH 3 false( normals false) + 2 normalH 2 O false( normall false) → 16 δ ‐ Tl 0.5 normalV 2 normalO 5 false( normals false) + 7 CH 3 COOH false( aq false) + 2 CO 2 false( normalg false) 8 normalV 2 normalO 5 false( normals false) + 4 Pb ( COOCH 3 ) 2 • 3 normalH 2 O false( normals false) → 8 δ ‐ Pb 0.5 …”

Section: Methodsmentioning

confidence: 99%

Toggling Stereochemical Activity through Interstitial Positioning of Cations between 2D V₂O₅ Double Layers

Agbeworvi,

Zaheer,

Handy

et al. 2023

Chem. Mater.

Self Cite

View full text Add to dashboard Cite

The 5/6s 2 lone-pair electrons of p-block cations in their lower oxidation states are a versatile electronic and geometric structure motif that can underpin lattice anharmonicity and often engender electronic and structural instabilities that underpin the function of active elements in nonlinear optics, thermochromics, thermoelectrics, neuromorphic computing, and photocatalysis. In contrast to periodic solids where lone-pair-bearing cations are part of the structural framework, installing lone-pair-bearing cations in the interstitial sites of intercalation hosts provides a means of a systematically modulating electronic structure through the choice of the group and the period of the inserted cation while preserving the overall framework connectivity. The extent of stereochemical activity and the energy positioning of lone-pair-derived mid-gap states depend on the cation identity, stoichiometry, and strength of anion hybridization. V 2 O 5 polymorphs are versatile insertion hosts that can accommodate a broad range of s-, p-, and d-block cations. However, the insertion of lone-pair-bearing cations remains largely underexplored. In this article, we examine the implications of varying the 6s 2 cations situated in interlayer sites between condensed [V 4 O 10 ] n double layers. Systematic modulations of lattice distortions, electronic structure, and magnetic ordering are observed with increasing strength of stereochemical activity from group 12 to group 14 cations. We compare and contrast p-blocklayered M x V 2 O 5 (M = Hg, Tl, and Pb) compounds and map the significance of local off-centering arising from the stereochemical activity of lone-pair cations to the emergence of filled antibonding lone-pair 6s 2 −O 2p-hybridized mid-gap states mediated by second-order Jahn−Teller distortions. Crystallographic studies of cation coordination environments and the resulting modulation of V−V interactions have been used in conjunction with variable-energy hard X-ray photoelectron spectroscopy measurements, firstprinciples electronic structure calculations, and crystal orbital Hamilton population analyses to decipher the origins of stereochemical activity. Magnetic susceptibility measurements reveal antiferromagnetic signatures for all the three compounds. However, the differences in V−V interactions significantly affect the energy balance of the superexchange interactions, resulting in an ordering temperature of 160 and 260 K for Hg 0.5 V 2 O 5 and δ-Tl 0.5 V 2 O 5 , respectively, as compared to 7 K for δ-Pb 0.5 V 2 O 5 . In δ-Pb 0.5 V 2 O 5 , the strong stereochemical activity of electron lone pairs and the resulting electrostatic repulsions enforce superlattice ordering, which strongly modifies the electronic localization patterns along the [V 4 O 10 ] slabs, resulting in disrupted magnetic ordering and an anomalously low ordering temperature. The results demonstrate a versatile strategy for toggling the stereochemical activity of electron lone pairs to modify the electronic structure near the Fermi level and to mediate superex...

show abstract

Memristive response of a new class of hydrated vanadium oxide intercalation compounds

Abstract: Abstract

Cited by 7 publications

References 28 publications

Multi‐Scale Investigations of δ‐Ni_0.25V₂O₅·nH₂O Cathode Materials in Aqueous Zinc‐Ion Batteries

Multi‐Scale Investigations of δ‐Ni_0.25V₂O₅·nH₂O Cathode Materials in Aqueous Zinc‐Ion Batteries

Thin V₂O₅ films synthesized by plasma-enhanced atomic layer deposition for memristive applications

Toggling Stereochemical Activity through Interstitial Positioning of Cations between 2D V₂O₅ Double Layers

Contact Info

Product

Resources

About

Memristive response of a new class of hydrated vanadium oxide intercalation compounds

Abstract: Abstract

Cited by 7 publications

References 28 publications

Multi‐Scale Investigations of δ‐Ni0.25V2O5·nH2O Cathode Materials in Aqueous Zinc‐Ion Batteries

Multi‐Scale Investigations of δ‐Ni0.25V2O5·nH2O Cathode Materials in Aqueous Zinc‐Ion Batteries

Thin V2O5 films synthesized by plasma-enhanced atomic layer deposition for memristive applications

Toggling Stereochemical Activity through Interstitial Positioning of Cations between 2D V2O5 Double Layers

Contact Info

Product

Resources

About

Multi‐Scale Investigations of δ‐Ni_0.25V₂O₅·nH₂O Cathode Materials in Aqueous Zinc‐Ion Batteries

Multi‐Scale Investigations of δ‐Ni_0.25V₂O₅·nH₂O Cathode Materials in Aqueous Zinc‐Ion Batteries

Thin V₂O₅ films synthesized by plasma-enhanced atomic layer deposition for memristive applications

Toggling Stereochemical Activity through Interstitial Positioning of Cations between 2D V₂O₅ Double Layers