A mixed-valence polyoxometalate-based 3D inorganic framework cathode material for high-efficiency rechargeable AZIBs

Han, Qing; Xiao, Hao-Ran; Zhou, Tao; Li, Bing-Chuan; Yang, Liu; Xie, Ling-Ling; Qiu, Xue-Jing; Wu, Xian-Yong; Zhu, Li-Min; Cao, Xiao-Yu

doi:10.1007/s12598-024-02671-3

Rare Met.

2024

DOI: 10.1007/s12598-024-02671-3

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A mixed-valence polyoxometalate-based 3D inorganic framework cathode material for high-efficiency rechargeable AZIBs

Qing Han,

Hao-Ran Xiao,

Tao Zhou

et al.

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Cited by 3 publications

References 75 publications

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Two‐Dimensional π‐d Conjugated Conductive Metal‐Organic Framework with Triple Active Centers as High‐Performance Cathodes for Flexible Zinc Batteries

Ding,

Liu,

Liu

et al. 2024

ChemSusChem

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Conductive metal‐organic frameworks (C‐MOFs) have received extensive interest in high‐performance zinc‐ion batteries (ZIBs) owing to multi‐redox sites and high electrical conductivity. Here, we present a π−d C‐MOF by coordinating 2,3,5,6‐tetraaminobenzoquinone (TABQ) ligands with Cu2+ ions (2D Cu‐TABQ) acting as cathodes for ZIBs. Benefiting from a triple active center (Cu2+, C=O, and C=N), 2D Cu‐TABQ shows an ultra‐high reversible capacity of 297.7 mAh g‐1at 0.2 A g‐1. Meanwhile, 2D Cu‐TABQ also has superior cycle stability with a capacity of up to 98.2 mAh g‐1 after 1000 times at 2.0 A g‐1. Considering the instability of the ligand bonds of C‐MOFs in aqueous electrolytes,this work uses gel electrolytes to reduce the dissolution of organic ligands into the electrolyte, thus suppressing the shuttle effect, significantly improving the cycling stability of 2D Cu‐TABQ. The flexible battery assembled by 2D Cu‐TABQ shows excellent capacity retention (64.4%) after 50 times at 0.2 A g‐1, which is significantly better than 36.4% in the common electrolyte, as well as outstanding bending resistance and electrochemical properties at different folding angles. This investigation will highlight the electrochemical application of C‐MOFs in flexible zinc ion batteries and offer novel ideas for the structural design of cathodes with multiple active centers.

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Two‐Dimensional π‐d Conjugated Conductive Metal‐Organic Framework with Triple Active Centers as High‐Performance Cathodes for Flexible Zinc Batteries

Ding,

Liu,

Liu

et al. 2024

ChemSusChem

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Current-mediated suppression of hydrogen evolution reaction in determination of Zn-metal Coulombic efficiency

Lee,

Han

et al. 2024

Current Opinion in Electrochemistry

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Mixed-valence metal–organic frameworks: concepts, opportunities, and prospects

Afshariazar,

Morsali

2025

Chem. Soc. Rev.

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A mixed-valence polyoxometalate-based 3D inorganic framework cathode material for high-efficiency rechargeable AZIBs

Cited by 3 publications

References 75 publications

Two‐Dimensional π‐d Conjugated Conductive Metal‐Organic Framework with Triple Active Centers as High‐Performance Cathodes for Flexible Zinc Batteries

Two‐Dimensional π‐d Conjugated Conductive Metal‐Organic Framework with Triple Active Centers as High‐Performance Cathodes for Flexible Zinc Batteries

Current-mediated suppression of hydrogen evolution reaction in determination of Zn-metal Coulombic efficiency

Mixed-valence metal–organic frameworks: concepts, opportunities, and prospects

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