γ′-V<sub>2</sub>O<sub>5</sub> Polymorph: A Genuine Zn Intercalation Material for Nonaqueous Rechargeable Batteries

Bhatia, Ankush; Xu, Jiahui; Pereira-Ramos, J.P.; Rousse, Gwenaëlle; Baddour‐Hadjean, R.

doi:10.1021/acs.chemmater.1c03739

Cited by 7 publications

(7 citation statements)

References 44 publications

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“…For the 1 m Zn(TFA) 2 -AN electrolyte, the upper voltage limit at 0.05 mA·cm –2 is 2.22 V (Figure S6). The oxidation limit is affordable for most reported cathode materials (≤2.20 V). − The Zn(TFA) 2 -TEP electrolyte displays negligible oxidation current until 2.30 V. The oxidation current slightly decreases with the increase of TEP contents in the electrolytes. The suppressed decomposition of TFA – in the TEP electrolyte is assigned to the formation of ion pairs or aggregates.…”

Section: Resultsmentioning

confidence: 98%

Constructing Nonaqueous Rechargeable Zinc-Ion Batteries with Zinc Trifluoroacetate

Zou

Sun

et al. 2022

ACS Appl. Energy Mater.

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Rechargeable zinc-ion batteries (RZIBs) are recognized as promising alternative energy storage techniques for large-scale application. Using organic electrolytes with wide electrochemical stability windows to construct nonaqueous RZIBs enables high operating voltage and energy density. However, the selection of zinc salts with cost-effectiveness and excellent electrochemical performance for nonaqueous electrolytes is limited. In this work, the electrochemical properties of a competitive zinc salt, zinc trifluoroacetate (Zn(TFA)2), are investigated in acetonitrile and triethyl phosphate. It is found that the Zn(TFA)2 is highly soluble in the organic solvents, reaching 15 mol·kg–1 in acetonitrile. The Zn(TFA)2 electrolytes show a wide electrochemical stability window of 2.2 V, good conductivity of 6.14 mS·cm–1 at 1.0 mol·kg–1, and good compatibility with the Zn metal anode. Zn(TFA)2 tends to form ion pairs or aggregates in triethyl phosphate, which improve the electrochemical stability but partially expense the ionic conductivity. Full batteries are fabricated with the Zn(TFA)2 electrolytes using potassium manganese hexacyanoferrate as the cathode. The batteries with Zn(TFA)2-AN-TEP (19%) electrolyte deliver a high specific density of 181.9 Wh·kg–1 at 0.1 A·g–1 and excellent cyclic stability with a capacity retention rate of 71.7% after 1000 cycles at 0.5 A·g–1. Our results suggest that the Zn(TFA)2 is a promising candidate of zinc salts in the application of nonaqueous RZIBs.

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Section: Resultsmentioning

confidence: 98%

Constructing Nonaqueous Rechargeable Zinc-Ion Batteries with Zinc Trifluoroacetate

Zou

Sun

et al. 2022

ACS Appl. Energy Mater.

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“…For instance, Bhatia et al . proposed a chemical oxidation method to prepare γ′-V 2 O 5 from γ-LiV 2 O 5 precursor . The extraction of Li from γ-LiV 2 O 5 by oxidation in a NO 2 BF 4 /acetonitrile solution led to the formation of γ′-V 2 O 5 , which possessed a 2D crystal structure consisting of highly puckered V 2 O 5 layers.…”

Section: Phase Engineering In Metal Hydroxide and Oxide Nanomaterialsmentioning

confidence: 99%

“…For instance, Bhatia et al proposed a chemical oxidation method to prepare γ′-V 2 O 5 from γ-LiV 2 O 5 precursor. 522 The extraction of Li from γ-LiV 2 O 5 by oxidation in a NO 2 BF 4 / acetonitrile solution led to the formation of γ′-V 2 O 5 , which possessed a 2D crystal structure consisting of highly puckered V 2 O 5 layers. Recently, Shao's group developed a unique mechano-thermal method to prepare IrO 2 nanosheets with an unconventional trigonal 1T phase, which is different from the conventional rutile phase of IrO 2 .…”

Section: Direct Synthesis Of Unconventional-phase Metal Oxide Nanomat...mentioning

confidence: 99%

Recent Progress on Phase Engineering of Nanomaterials

Yun,

Ge,

Shi

et al. 2023

Chem. Rev.

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As a key structural parameter, phase depicts the arrangement of atoms in materials. Normally, a nanomaterial exists in its thermodynamically stable crystal phase. With the development of nanotechnology, nanomaterials with unconventional crystal phases, which rarely exist in their bulk counterparts, or amorphous phase have been prepared using carefully controlled reaction conditions. Together these methods are beginning to enable phase engineering of nanomaterials (PEN), i.e. , the synthesis of nanomaterials with unconventional phases and the transformation between different phases, to obtain desired properties and functions. This Review summarizes the research progress in the field of PEN. First, we present representative strategies for the direct synthesis of unconventional phases and modulation of phase transformation in diverse kinds of nanomaterials. We cover the synthesis of nanomaterials ranging from metal nanostructures such as Au, Ag, Cu, Pd, and Ru, and their alloys; metal oxides, borides, and carbides; to transition metal dichalcogenides (TMDs) and 2D layered materials. We review synthesis and growth methods ranging from wet-chemical reduction and seed-mediated epitaxial growth to chemical vapor deposition (CVD), high pressure phase transformation, and electron and ion-beam irradiation. After that, we summarize the significant influence of phase on the various properties of unconventional-phase nanomaterials. We also discuss the potential applications of the developed unconventional-phase nanomaterials in different areas including catalysis, electrochemical energy storage (batteries and supercapacitors), solar cells, optoelectronics, and sensing. Finally, we discuss existing challenges and future research directions in PEN.

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“…23,24 The γ′-, ζ-, and ε′-V 2 O 5 phases can be achieved by the removal of metal cations from γ-LiV 2 O 5 , β-Ag x V 2 O 5 , and ε-Cu 0.9 V 2 O 5 , respectively. 20,25,26 Interestingly, α-, β-, γ′-, and ε′-V 2 O 5 phases exhibit a twodimensional layered structure, while δand ζ-V 2 O 5 phases show a three-dimensional tunnel structure. 23,25−27 Compared with a tunnel structure, V 2 O 5 compounds with a layered structure hold inherent advantages in terms of the capacity and kinetic performance.…”

Section: Introductionmentioning

confidence: 99%

“…With regard to V 2 O 5 compounds (A m V 2 O 5 ), their V–O frameworks can be divided into at least six classes including α-, β-, δ-, γ ′ -, ζ-, and ε ′ -V 2 O 5 phases based on the different V–O coordination polyhedra. , Due to the flexible and multivariant coordination polyhedra, the mutual structural transformation among six classes is common. For instance, α-V 2 O 5 phases that are stable at high pressures can be converted into either β- or δ-V 2 O 5 phase. , The γ ′ -, ζ-, and ε ′ -V 2 O 5 phases can be achieved by the removal of metal cations from γ -LiV 2 O 5 , β-Ag x V 2 O 5 , and ε-Cu 0.9 V 2 O 5 , respectively. ,, Interestingly, α-, β-, γ ′ -, and ε ′ -V 2 O 5 phases exhibit a two-dimensional layered structure, while δ- and ζ-V 2 O 5 phases show a three-dimensional tunnel structure. ,− Compared with a tunnel structure, V 2 O 5 compounds with a layered structure hold inherent advantages in terms of the capacity and kinetic performance . Especially, α-V 2 O 5 with an orthorhombic structure and ε ′ -V 2 O 5 with a monoclinic structure have been considered good cathode candidate materials for AZIBs.…”

Section: Introductionmentioning

confidence: 99%

A_mV₂O₅ with Binary Phases as High-Performance Cathode Materials for Zinc-Ion Batteries: Effect of the Pre-Intercalated Cations A and Reversible Transformation of Coordination Polyhedra

Zhang

Chen

Dong

et al. 2022

ACS Appl. Mater. Interfaces

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In this work, five vanadium oxide materials with a series of pre-intercalated cations A (A m V 2 O 5 ), including Zn 2+ , Mg 2+ , NH 4 + , Li + , and Ag + , have been successfully prepared by a two-step method. All of them possess binary monoclinic and orthorhombic V 2 O 5 phases with an open layered structure that allows the ionic storage and diffusion of hydrated cations. The interlayer space for the monoclinic V 2 O 5 phase is strongly dependent on the radii of hydrated cations A, while the one for the orthorhombic V 2 O 5 phase remains the same regardless of the radii of cations A. Among them, A m V 2 O 5 with pre-intercalated Zn 2+ (ZVO) has the best storage ability of Zn 2+ with a reversible capacity close to 400 mAh g −1 , and A m V 2 O 5 with pre-intercalated Ag + shows the highest rate capacity with a nearly 40% capacity retention at a current of 20 A g −1 (≈25 C). Kinetic studies have clearly shown that pseudocapacitive behavior dominates the electrochemical reaction on ZVO. During the Zn 2+ (de)intercalation reaction, a highly reversible transformation of binary monoclinic or orthorhombic V 2 O 5 phases into a single triclinic Zn x V 2 O 5 •nH 2 O phase is demonstrated on ZVO. Vanadium atoms are identified as the redox centers that undergo the mutual transition among the chemical states of V 3+ , V 4+ , and V 5+ . They together with oxygen atoms constitute reasonable V−O coordination polyhedra to generate a layered structure with a suitable interlayer space for the insertion or removal of zinc ions. Actually, the intrinsic coordination chemistry changes between VO 5 square pyramids and VO 6 octahedra account for the phase transformation during the Zn 2+ -(de)intercalation reaction.

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γ′-V₂O₅ Polymorph: A Genuine Zn Intercalation Material for Nonaqueous Rechargeable Batteries

Cited by 7 publications

References 44 publications

Constructing Nonaqueous Rechargeable Zinc-Ion Batteries with Zinc Trifluoroacetate

Constructing Nonaqueous Rechargeable Zinc-Ion Batteries with Zinc Trifluoroacetate

Recent Progress on Phase Engineering of Nanomaterials

A_mV₂O₅ with Binary Phases as High-Performance Cathode Materials for Zinc-Ion Batteries: Effect of the Pre-Intercalated Cations A and Reversible Transformation of Coordination Polyhedra

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γ′-V2O5 Polymorph: A Genuine Zn Intercalation Material for Nonaqueous Rechargeable Batteries

Cited by 7 publications

References 44 publications

Constructing Nonaqueous Rechargeable Zinc-Ion Batteries with Zinc Trifluoroacetate

Constructing Nonaqueous Rechargeable Zinc-Ion Batteries with Zinc Trifluoroacetate

Recent Progress on Phase Engineering of Nanomaterials

AmV2O5 with Binary Phases as High-Performance Cathode Materials for Zinc-Ion Batteries: Effect of the Pre-Intercalated Cations A and Reversible Transformation of Coordination Polyhedra

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Product

Resources

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γ′-V₂O₅ Polymorph: A Genuine Zn Intercalation Material for Nonaqueous Rechargeable Batteries

A_mV₂O₅ with Binary Phases as High-Performance Cathode Materials for Zinc-Ion Batteries: Effect of the Pre-Intercalated Cations A and Reversible Transformation of Coordination Polyhedra