Vanadium dissolution restraint and conductive assistant in MnV12O31·10H2O to boost energy storage property for aqueous zinc-ion batteries

Wang, Shuting; Xiong, Li; Yuan, Guanghui; Hu, Tao; Lassi, Ulla; Wang, Beibei; Bai, Jintao; Wang, Gang; Wang, Xiujuan

doi:10.1016/j.cej.2023.146883

Chemical Engineering Journal

2023

DOI: 10.1016/j.cej.2023.146883

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Vanadium dissolution restraint and conductive assistant in MnV12O31·10H2O to boost energy storage property for aqueous zinc-ion batteries

Shuting Wang,

Li Xiong,

Guanghui Yuan

et al.

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2024

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Cited by 7 publications

References 40 publications

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Highly Stable Aqueous Zn‐Ion Batteries Achieved by Suppressing the Active Component Loss in Vanadium‐Based Cathode

Zhang,

Cao,

Yang

et al. 2024

Advanced Energy Materials

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Aqueous zinc–ion batteries (AZIBs) hold significant promise for large‐scale energy storage due to their inherent safety and environmental benefits. However, their practical application is often limited by rapid capacity loss from the dissolution of active cathode materials. Here, an effective strategy is proposed to suppress the active component loss by doping high‐valence Sn4+ in V3O7·H2O (Sn–V3O7·H2O) cathode material to achieve highly stable AZIBs. An impressive capacity retention of 89.3% over 6000 cycles at 5.0 A g−1 and a high specific capacity of 408 mAh g−1 at 0.1 A g−1 are attained. The Sn4+ doping thermodynamically lowers the formation energy of Sn–V3O7·H2O and increases the dissolution energy of VO2+ ions, thereby reinforcing the structural stability and suppressing the vanadium dissolution. Besides, Sn4+ doping enhances electrical conductivity and broadens Zn2+ diffusion channels, significantly accelerating Zn2+ intercalation and deintercalation kinetics. The experimental results are integrated with mechanism analysis and density functional theory calculation to elucidate the dissolution dynamics of V‐based cathodes, and employ X‐ray absorption spectroscopy to reveal the local electronic structures and chemical valences of vanadium during charge/discharge processes, thereby providing comprehensive insights into high‐performance cathode materials for AZIBs.

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Highly Stable Aqueous Zn‐Ion Batteries Achieved by Suppressing the Active Component Loss in Vanadium‐Based Cathode

Zhang,

Cao,

Yang

et al. 2024

Advanced Energy Materials

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Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework‐Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc‐Ion Batteries

Kakarla,

Bandi,

Syed

et al. 2024

Small Methods

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Achieving high‐performance aqueous zinc (Zn)‐ion batteries (AZIBs) requires stable and efficient cathode materials capable of reversible Zn‐ion intercalation. Although layered vanadium oxides possess high Zn‐ion storage capacity, their sluggish kinetics and poor conductivity present significant hurdles for further enhancing the performance of AZIBs. In response to this challenge, a dissolution‐regrowth and conversion approach is formulated using metal–organic frameworks (MOFs) as a sacrificial template, which enables the in situ creation of copper vanadium oxides (CuVOx) with porous 1D channels and distinctive nanoarchitectures. Owing to their distinctive structure, the optimized CuVOx cathode experiences a reaction involving the synergistic insertion/extraction of Zn2+, resulting in rapid Zn2+ diffusion kinetics and enhanced electrochemical activity postactivation. Specifically, the activated electrode delivers a reversible capacity of 519 mAh g−1 at 0.5 A g−1 for AZIBs. It is noteworthy that the electrode exhibits a remarkable reversible rate capacity of 220 mAh g−1 at 5 A g−1 with excellent durable cycleability, retaining 88% of its capacity even after 3000 cycles. Various ex situ testing methods endorse the reversible insertion/extraction of Zn2+ in the CuVOx cathode. This study provides a novel insight into high‐performance MOF‐derived unique structure designs for AZIB electrodes.

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A conductive flexible carbon nanoyarns embedded with VN quantum dots for highly Kinetics-Compatible Li-Ion capacitors

Zhang,

Hu,

et al. 2024

Chemical Engineering Journal

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Vanadium dissolution restraint and conductive assistant in MnV12O31·10H2O to boost energy storage property for aqueous zinc-ion batteries

Cited by 7 publications

References 40 publications

Highly Stable Aqueous Zn‐Ion Batteries Achieved by Suppressing the Active Component Loss in Vanadium‐Based Cathode

Highly Stable Aqueous Zn‐Ion Batteries Achieved by Suppressing the Active Component Loss in Vanadium‐Based Cathode

Unraveling Energy Storage Performance and Mechanism of Metal–Organic Framework‐Derived Copper Vanadium Oxides with Tunable Composition for Aqueous Zinc‐Ion Batteries

A conductive flexible carbon nanoyarns embedded with VN quantum dots for highly Kinetics-Compatible Li-Ion capacitors

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