4.7 Article

Porous and chemically robust MIL-100(V) MOF as an efficient cathode material for zinc-ion batteries

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CHEMICAL ENGINEERING JOURNAL
卷 470, 期 -, 页码 -

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ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2023.144340

关键词

Energy storage devices; Energy density; Metal -organic frameworks (MOFs); Vanadium cathode; Zinc -ion batteries

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This study evaluated the potential of a 3D highly porous MIL-100(V) MOF as an efficient cathode material in rechargeable zinc-ion batteries (ZIBs). The material exhibited high specific capacity, excellent cycle stability, and high energy density, making it promising for next-generation energy storage devices.
Rechargeable zinc-ion batteries (ZIBs) have received wide attentiveness nowadays due to having several func-tional superiorities such as high energy density, cost-effectiveness, lesser toxicity, environmental benignity, and superior safety. Herein, we evaluated the potentiality of a 3D highly porous MIL-100(V) MOF as an efficient cathode material in ZIB. The constructed framework exhibited a maximum specific capacity of-362 mA h g-1 at 0.2 A g-1 current density and retained -95.45% initial capacitance with no significant loss of coulombic ef-ficiency (CE) even after 3500 consecutive cycles. Moreover, the MIL-100(V)//Zn CR-2032-coin cell delivered high energy density of -195 W h kg- 1 at 0.2 A g-1 current density, which could be attributed to the efficient immobilization of Zn2+ ions within the confined pore channels. Mechanism investigation of the Zn2+-storage/ release process was verified by several ex-situ studies. A real-time experiment and slow zinc dendrite formation made MIL-100(V) MOF promising for next-generation energy storage devices.

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