%ANam, Kwan%APark, Sarah%Ados Reis, Roberto%ADravid, Vinayak%AKim, Heejin%AMirkin, Chad%AStoddart, J.%BJournal Name: Nature Communications; Journal Volume: 10; Journal Issue: 1; Related Information: CHORUS Timestamp: 2022-12-16 20:51:47 %D2019%INature Publishing Group %JJournal Name: Nature Communications; Journal Volume: 10; Journal Issue: 1; Related Information: CHORUS Timestamp: 2022-12-16 20:51:47 %K %MOSTI ID: 10153537 %PMedium: X %TConductive 2D metal-organic framework for high-performance cathodes in aqueous rechargeable zinc batteries %XAbstract

Currently, there is considerable interest in developing advanced rechargeable batteries that boast efficient distribution of electricity and economic feasibility for use in large-scale energy storage systems. Rechargeable aqueous zinc batteries are promising alternatives to lithium-ion batteries in terms of rate performance, cost, and safety. In this investigation, we employ Cu3(HHTP)2, a two-dimensional (2D) conductive metal-organic framework (MOF) with large one-dimensional channels, as a zinc battery cathode. Owing to its unique structure, hydrated Zn2+ions which are inserted directly into the host structure, Cu3(HHTP)2, allow high diffusion rate and low interfacial resistance which enable the Cu3(HHTP)2cathode to follow the intercalation pseudocapacitance mechanism. Cu3(HHTP)2exhibits a high reversible capacity of 228 mAh g−1at 50 mA g−1. At a high current density of 4000 mA g−1(~18 C), 75.0% of the initial capacity is maintained after 500 cycles. These results provide key insights into high-performance, 2D conductive MOF designs for battery electrodes.

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